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Journal articles on the topic 'Maximum Permissible Limit'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Okafor Ifeanyi, Odera Chukwumaijem, Charles Okeke Ifeoma Ibekwe, and Sandra Chisom Udenze. "Effects of Pesticides on Selected Vegetable Crops Grown in Abakaliki, Ebonyi State Nigeria." Journal of Agriculture and Crops, no. 94 (August 1, 2023): 421–26. http://dx.doi.org/10.32861/jac.94.421.426.

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The study analyzed the effects of pesticides on selected vegetable crops grown in Abakaliki, Ebonyi State Nigeria. The pesticide Dichlorvos (DD Force) was used to treat sites planted with Amaranth, cucumber, and okra. Soil and vegetable samples were randomly collected after 30 days of incorporation and tested for traces of chloride and phosphate. The results of the analysis showed that amaranth, cucumber, and okra residue concentration exceeded the maximum residual limit. Chloride and phosphate residues exceed the Maximum Residue Limit in vegetable crops. The amount of chloride in the soil sam

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Wildermuth, H. "Derivation of the maximum permissible activity concentrations in exhaust air." Kerntechnik 67, no. 1 (2002): 29–32. http://dx.doi.org/10.1515/kern-2002-0010.

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Abstract Within the scope of the amendment of the Radiation Protection Ordinance, it became necessary to lay down new limit values, as a result of both the modifications made in the stipulations of the EU directives, and improvements in the level of scientific and technological advancement. This led, at the same time, to the necessity of recalculating the permitted levels for activity concentrations in exhaust air from applications involving isotopes (mostly from medical installations). The following article provides an overview of the approach applied in the recalculation of the permitted act

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3

Garg, Arun. "Effects of Measured versus Proposed Horizontal Distance on the NIOSH Action Limit and Maximum Permissible Limit for Manual Materials Handling." Proceedings of the Human Factors Society Annual Meeting 33, no. 11 (1989): 654–56. http://dx.doi.org/10.1177/154193128903301106.

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The objective of this research was to compare action limits and maximum permissible limits based on measured horizontal distances with those based on the rule of thumb proposed in the NIOSH Guide. Thirteen male subjects were required to lift three different boxes (25, 38 and 51 cm wide), at four different frequencies (0.2, 3, 6 and 9 lifts min−1), and at two heights (floor level to bench height (0.8 m) and bench height to 1.5 m). Each lift was performed for one hour and horizontal distances for all thirteen subjects were measured at the origin of lift. Action limits and maximum permissible lim

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Perov, Sergey Yu, Olga V. Burmistrova, and Alexey I. Dremin. "Working conditions for electrical personnel under using shielding equipment in the warm season of the year." Hygiene and sanitation 104, no. 4 (2025): 403–8. https://doi.org/10.47470/0016-9900-2025-104-4-403-408.

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Introduction. Near overhead power lines in occupational conditions where the power frequency electric field strength exceeds the maximum permissible limit, the staff used shielding personal protective equipment of the Ep type may have additional thermal load on the body’s functional state type during warm weather. Material and methods. Hygienic assessment of occupational conditions was in the sanitary protection zone of 330 kV, 500 kV, and 750 kV overhead power lines. In addition to power frequency, electric and magnetic fields assessment, there was studied the action of climatic conditions on

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Tarfa, Florence D., A. Samali, Nneka N. Ibekwe, and O. P. Adigwe. "Evaluation of quality of some commonly used herbal medicinal plants in local markets of FCT, Abuja, Nigeria." Journal of Phytomedicine and Therapeutics 21, no. 2 (2022): 981–91. http://dx.doi.org/10.4314/jopat.v21i2.17.

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The safety of herbal medicines has become a major concern to both national health authorities and the general public. Hence their production, quality, distribution and use are regulated. Some medicinal plants commonly used for malaria, diabetes and Tuberculosis and respiratory conditions were evaluated for qual-ity. The objective of the study is to assess some quality specifications, physicochemical and heavy metals of some medicinal plant extracts. The samples were identified, purchased, processed and analyzed using appropriate standards methods specified by WHO and AOAC; while the heavy meta

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A.U, Abubakar, Saeed, M.D, and Habib, D.W. "ASSESMENT OF SOME HEAVY METALS CONTENT IN BOREHOLE WATER SAMPLES DRILLED NEAR PUBLIC CONVENIENCES IN KANO METROPOLIS, NIGERIA." Environmental Contaminants Reviews 7, no. 1 (2024): 18–22. https://doi.org/10.26480/ecr.01.2024.18.22.

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Boreholes have traditionally been one of the sustainable water sources for domestic use. However, in Kano state, Nigeria, some of these boreholes have been drilled close to soak ways or pit latrines without considering the possibility of water contamination. This research was carried out to assess some heavy metals in borehole water samples drilled near public conveniences in Kano, Nigeria. To achieve this, 31 samples were randomly collected from different sampling sites and analyzed for heavy metal content. Heavy metals were analyzed using an Atomic Absorption Spectrophotometer (Agilent 200 s

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Birendra, Kumar Singh. "Protection of Bank of River for Very High Discharge of Flow." Journal of Water Resources and Pollution Studies (e-ISSN: 2581-5326) 5, no. 1 (2020): 10–18. https://doi.org/10.5281/zenodo.3741878.

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Simulation of discharge of flow and depth of flow for 0.75-inch roughness bed data is done and depth of flow for Q<sub>p</sub> = 15000 m3/sec. was found from the derived equation where Q<sub>p</sub> = Discharge of flow for prototype or river hydraulics. Similarly, simulation between depth of flow for depth of flow and maximum permissible velocity was done and the depth of flow obtained for Q<sub>p</sub> = 15000m3/sec. is substituted in the equation and maximum permissible velocity is found and it is within permissible value. These simulations are to be done because the dependent parameters are

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8

Atiribom, R. Y., O. P. Abioye, S. Y. Daniyan, R. O. Ojutiku, H. S. Auta, and M. M. Mu’azu. "Bacteriological and heavy metal status of water and fish samples from Jebba Lake – Nigeria." Tropical Freshwater Biology 29, no. 1 (2020): 85–97. http://dx.doi.org/10.4314/tfb.v29i1.6.

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Quantitative and qualitative analysis of bacterial isolates in water and fish samples (Oreochromis niloticus and Clarias gariepinus) from Jebba Lake were carried out using primary isolation media and microbact identification kits. The concentration of heavy metals, Lead (Pb), Copper (Cu), Cadmium (Cd), Chromium (Cr) and Arsenic (As) were determined using Atomic Absorption Spectrophotometer (AAS). Samples were collected from five (5) different stations. Station Jl.1 and Jl.2 are located at the upper course of the lake and were characterized by high human activities (washing, bathing, mining and

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Nezdoiminov, Viktor, Dmitrii Zavorotnyi, Vitalii Rozhkov, and Pavel Deminov. "Permissible parameters for the circulation rate of the sludge mixture in airlift reactor-clarifier with suspended layer." MATEC Web of Conferences 245 (2018): 11009. http://dx.doi.org/10.1051/matecconf/201824511009.

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Factors affecting the permissible limits of sludge mixture circulation rate are given for airlift reactor-clarifier with a suspended layer. The upper limit of the circulation rate is justified as a function of some geometric dimensions of the bioreactor and the hydraulic load on the clarifier to comply with conditions of a suspended layer existence. The lower limit of the circulation rate was obtained on the basis of two conditions: the duration of the active sludge stay in anoxic conditions and the observance of recommended rates in the construction in order to avoid the settling of active sl

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Kumari, Mamata, and Satya Brat Shastri. "PHYSICO-CHEMICAL ASSESSMENT OF GROUNDWATER OF THE NORTHERN PART OF BUDHI GANDAK AREA AKBARPUR IN MUSHAHARI BLOCK MUZAFFARPUR DISTRICT, BIHAR." International Journal on Biological Sciences 15, no. 02 (2024): 77–79. https://doi.org/10.53390/ijbs.2024.15201.

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During investigation, carried out the quality of water sample from tube wells at different places besides the said area Akbarpur in Mushahri Block Muzaffarpur District of Bihar state during June 2017 to May2018. Parameters such as pH, TDS, DO, EC, alkalinity, total hardness Ca, Mg, Po ---, No -, So – and arsenic have been studied. Some 4 3 4 samples exceeded the maximum permissible limit of TDS and Iron also according to medical science. Another water samples along Budhi Gandak area under examination which even exceeded the maximum permissible level. Arsenic contamination in the ground water o

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Esther, Isabella Eucharista. "ASSESSMENT OF WATER QUALITY OF BORE HOLE WATER IN TIRUCHENDUR." International Journal of Research -GRANTHAALAYAH 4, no. 12 (2016): 124–31. https://doi.org/10.5281/zenodo.223818.

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The present study was carried out on the assessment of water quality index (WQI) of bore hole water in Tiruchendur. All the analysis was done by APHA (2012) method. Here the result pointed out that pH was recorded maximum as 7.16±0.03 during July and September 2016. TDS concentration was obtained high as 2400±2.000 mg/l during September 2016. TA content was noticed high as 688±2.51 mg/l during September 2016. TH range was high as 800±2.00 mg/l during August 2016. The concentration of Ca was recorded high as 200±1.53mg/l during August and September. All the parameters were exceeded the permissi

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Nabila, T. I., and S. Ibrahim. "Physico-chemical properties of tannery effluents from Challawa industrial area in Kano and evaluation of bioremediation potentials of Spirogyra porticalis and Chlorella vulgaris on the effluents." Bayero Journal of Pure and Applied Sciences 12, no. 1 (2020): 156–61. http://dx.doi.org/10.4314/bajopas.v12i1.26s.

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Discharge of industrial effluent in aquatic environment is a serious threat to life due to toxic heavy metals. Algae can be used as cheap bioremediation agents in comparison to conventional technologies. The present study was conducted to evaluate the bioremediation potential of two algal species (Spirogyra porticalis and Chlorella vulgaris) for the removal of Lead from two tannery industries (M Tannery and G Tannery), located in Challawa Industrial Area. Temperature, EC, TDS, DO and BOD were measured. In G Tannery, Spirogyra porticalis had the highest affinity for Lead which was 51%, 55% and

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13

Sribniak, N. M., L. A. Tsyhanenko, S. A. Halushka, and H. M. Tsyhanenko. "STRUCTURAL SLAB OPERATION STUDY." Modern construction and architecture, no. 8 (June 29, 2024): 30–42. http://dx.doi.org/10.31650/2786-6696-2024-8-30-42.

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A number of factors affect the redistribution and value of axial forces in the cores of structural slabs, such as the location and quantity of supports, the presence or absence of prestress in the structure, the shape of the base crystal of the slab, which is the forming element, and the height (thickness) of the slab, which can be varied within certain permissible limits. A change in one of these features with the rest of the parameters remaining unchanged significantly changes the stress-strain state of the structure. The paper describes the description of finite element models of a structur

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Ba-abbad, Ali Mohammed Abdel-bari, Alwi Ahmad Alwi Maknoon, and Yaslam Khaled Yaslam Bin-Zaidan. "Detection of milk's sheep quality indicators by studying the contamination of milk with some heavy metals in some areas of Hadramout Coast – Yemen." Yemeni Journal for Medical Sciences 18, no. 1 (2024): 9–19. http://dx.doi.org/10.20428/yjms.v18i1.2322.

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An experimental study was conducted with the aim of using sheep milk as bioindicators of environmental pollution for cadmium, lead and arsenic in some areas of Hadhramout coast in the period from November 2021 to March 2022, 45 samples of milk were collected from five areas of the Hadhramaut coast (Fowah, Al-Ghaleelah Thelah, Shaheer and Al-Khareebah). Cadmium and lead concentrations were measured by (FAAS), while arsenic concentrations were measured by (AAS- MHS 15). The results of study showed that the mean concentrations of cadmium, lead and arsenic in milk samples are 0.0087 ppm, 0.055 ppm

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15

OBASI, NWOGO AJUKA, CHINYERE ALOKE, STELLA EBERECHUKWU OBASI, ADEMOLA CLEMENT FAMUREWA, PATIENCE NKEMJIKA OGBU, and GERTRUDE NNEKA ONYEJI. "Elemental Composition and Associated Health Risk of Honey Obtained from Apiary Farms in Southeast Nigeria." Journal of Food Protection 83, no. 10 (2020): 1745–56. http://dx.doi.org/10.4315/jfp-20-072.

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ABSTRACT This study investigated the levels of lead, selenium, arsenic, iron, manganese, copper, zinc, chromium, cadmium, and nickel in honey and their potential health risks to consumers, using standard protocols. The honey samples were obtained from apiary farms at nine different locations in southeast Nigeria. They were digested at optimal conditions and analyzed using a flame atomic absorption spectrophotometer. Levels of the studied elements in the honey were found to vary relative to the sample source; however, all were below European Commission maximum permissible limits, with the excep

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Tamuno K, Jinyemiema, and Okoronkwo Ngozi A. "Analysis ofAge and Multiple Generator Sets Operation on Exhaust Gas Emissions." International Journal of Advances in Engineering and Management 7, no. 2 (2025): 473–79. https://doi.org/10.35629/5252-0702472479.

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This study analysed the effects of generator set age and multiple generator sets running at the same in a specified area on the emission of carbon monoxide (CO), nitrogen oxide (NO2), sulphur dioxide (SO2) and volatile organic carbon (VOC).Both generators running on gasoline and diesel were analysed. The gas emissions were analysed from generators with ages of 2, 5, 10 and 15 years, while the investigation on effect of multiple generators was analysed on 2, 3, and 5 generators operating at the time. The results showed that the concentrations of CO, NO2, SO2 and VOC emitted from gasoline and di

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17

Ogham, Chidi J., Jonathan D. Dabak, and Kiri H. Jaryum. "Assessment of the water quality of Bar-Bula Village well waters, Tafawa Balewa local government area, Bauchi State, Nigeria." Brazilian Journal of Science 2, no. 10 (2023): 92–101. http://dx.doi.org/10.14295/bjs.v2i10.376.

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There was a report of health challenges in our study area due to the consumption of water from wells sited in the community. The research was aimed at assessing the water quality parameters of the wells consumed by the villagers towards providing information on the possible health implication(s) of its consumption. Two sampling sites were selected, well 1 and well 2, which were hitherto the sole sources of water in the village. Physicochemical and microbiological quality parameters of samples were done in order to assess their conformance with the specification of Nigerian Standard for drinkin

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18

Rashid, Fayaz. "Analysis and Determination of Axle Load Spectra and Traffic Input for Pavement Design." International Journal for Research in Applied Science and Engineering Technology 9, no. 8 (2021): 2536–42. http://dx.doi.org/10.22214/ijraset.2021.3761.

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Abstract: This study examines the vehicle class distribution, hourly distribution factors, weekly distribution factors, monthly distribution factors, axle load spectra for each vehicle class, and each axle of each vehicle class for the WIM station installed on the N-55 highway to aid analysis and design of new Mechanistic-Empirical Pavement Design Guide. The maximum, minimum and permissible load limit for the different vehicle class, average gross vehicle weight (GWV) and permissible load limits also being incorporated. The directional distribution for north bound and south bound traffic were

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Hammani, B., I. Abubakar, A. Danlami, A. M. Gimba, M. Abdulkadir, and Z. Muhammad. "Assessment of Physicochemical Properties of Groundwater for Irrigation Purposes from Difa, Dadinkowa and Gwani Communitiesof Yamaltu-Deba Local Government Area of Gombe State, Nigeria." Journal of Applied Sciences and Environmental Management 26, no. 10 (2022): 1641–46. http://dx.doi.org/10.4314/jasem.v26i10.4.

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The demand for quality water free of pollutants that can be maximally utilized by soil for crop production is on the societal increase. The study is aimed at examining some physico-chemical indices of groundwater for irrigation purposes from Difa, Dadinkowa and Gwani of Yamaltu-Deba Gombe State, Nigeria using standard methods. Samples collected were analysed ad data for mean concentration range presented aspH (6.00 - 6.80), temperature (23.95 - 25.78 oC), total dissolved solids (106.98 - 149.51 mg/L), total suspended solids (0.60 -1.28 mg/L), total alkalinity (17.00 - 19.25 mg/L) and dissolved

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Zelenkin, S. E., P. Z. Shur, D. A. Kiryanov, et al. "On sufficient substantiation for maximum permissible level of zilpaterol in meat products." Health Risk Analysis, no. 4 (December 2022): 109–16. http://dx.doi.org/10.21668/health.risk/2022.4.10.

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The Joint FAO/WHO Expert Committee recommends the maximum permissible level of zilpaterol in meat to be fixed at 0.5 µg/kg. This level is substantiated by results of analysis described in several research works. Nevertheless, substantiation provided for this recommended standard requires a detailed discussion. In this study, we aimed to analyze substantiation of FAO/WHO suggestions on the maximum permissible level (MPL) of zilpaterol in meat as per health risks for consumers. Our analysis of research results revealed that the no observed adverse effect level (NOAEL) and the lowest observed adv

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Zelenkin, S. E., P. Z. Shur, D. A. Kiryanov, et al. "On sufficient substantiation for maximum permissible level of zilpaterol in meat products." Health Risk Analysis, no. 4 (December 2022): 109–16. http://dx.doi.org/10.21668/health.risk/2022.4.10.eng.

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The Joint FAO/WHO Expert Committee recommends the maximum permissible level of zilpaterol in meat to be fixed at 0.5 µg/kg. This level is substantiated by results of analysis described in several research works. Nevertheless, substantiation provided for this recommended standard requires a detailed discussion. In this study, we aimed to analyze substantiation of FAO/WHO suggestions on the maximum permissible level (MPL) of zilpaterol in meat as per health risks for consumers. Our analysis of research results revealed that the no observed adverse effect level (NOAEL) and the lowest observed adv

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Kamboj, Nitin, and Mohrana Choudhary. "Impact of solid waste disposal on ground water quality near Gazipur dumping site, Delhi, India." Journal of Applied and Natural Science 5, no. 2 (2013): 306–12. http://dx.doi.org/10.31018/jans.v5i2.322.

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The present study was carried out to study the impact of domestic wastes disposal on ground water quality at Delhi, India. Ground water is one of the major sources of drinking water in arid and semi-arid regions. Ground water quality data and its distributions are important for the purpose of planning and management. The samples of ground water were collected and analyzed for various physico-chemical parameters viz. conductivity, total dissolved solids (TDS), alkalinity, total hardness, calcium, magnesium, chloride, sulphate, nitrate, phosphate,fluoride, sodium and potassium. Among these param

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Nabila, Tijjani Ismail, Sani Ibrahim, Faruk Suleiman Umar, Haruna Isiaku Isyaku, and Amir Ado Muhammad. "ASSESSMENT OF BIOREMEDIATION POTENTIAL OF Spirogyra porticalis and Chlorella vulgaris ON COPPER AND CHROMIUM IN TANNERY EFFLUENT FROM CHALLAWA INDUSTRIAL AREA, KANO STATE." FUDMA JOURNAL OF SCIENCES 5, no. 3 (2021): 29–35. http://dx.doi.org/10.33003/fjs-2021-0503-739.

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Discharge of industrial effluent in aquatic environment is a serious threat to life due to toxic heavy metals. Algae can be used as cheap bioremediation agent in comparison to conventional technologies. This research was conducted to evaluate the bioremediation potential of two algal species i.e.Spirogyra spp. and Chlorella spp. for the removal of heavy metals from two tannery industries M Tannery and GB Tannery located in Challawa Industrial area by using Atomic Absorption Spectrophotometry (AAS Unicorn 969) and also Physicochemical parameters like pH, Temperature, EC, TDS, DO and BOD were me

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Obianyido, Ozioma Ebere, Hector Okechukwu Obianyido, and Ruth Efevare Imosemi. "Potential Health Risk Evaluation of Heavy Metal Exposure from Consuming Commercially Produced Food Seasonings in Enugu, Nigeria." European Journal of Nutrition & Food Safety 15, no. 9 (2023): 33–41. http://dx.doi.org/10.9734/ejnfs/2023/v15i91334.

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Heavy metals are inherently non-biodegradable elements of the earth's crust that collect and remain in the ecosystem in perpetuity due to both human and natural activity. Their contamination in seasonings remains a public health concern because of the frequency of use. Prolonged exposure to these heavy metals is a severe health risk worldwide. This study evaluated the potential health risk of heavy metal exposure from consuming commercially produced food seasonings in Enugu, Nigeria. Thirty (30) commercially produced food seasonings were selected by simple random sampling and grouped into five

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Cefalo, Raffaela, Tatiana Sluga, Giulio Ossich, and Roberto Roberti. "Assessment of Design Consistency for Two-Lane Rural Highways with Low Tortuosity Alignment." Sustainability 16, no. 3 (2024): 987. http://dx.doi.org/10.3390/su16030987.

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One technique employed to enhance road safety involves assessing the alignment’s consistency. A prevalent measure of consistency is evaluating speed variations along the alignment. A key consideration in this assessment is determining the speed upon which the road alignment should be based. This research reveals that on two-lane rural highways with low tortuosity alignments, operating speeds on horizontal curves and tangents consistently exceeded not only the design speeds but also the maximum permissible design speed for the road category. Consequently, using the design speed to assess consis

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Lupascu, Tudor, Mihai Ciobanu, Victor Botan, et al. "Removal of Ammonium Ions and Ammonia from Groundwater by Oxidation Processes." Revista de Chimie 69, no. 11 (2018): 3082–86. http://dx.doi.org/10.37358/rc.18.11.6687.

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The process of removal of ammonium ions and ammoniafrom ground water, which contained these components in quantities exceeding the maximum permissible limit, was studied by the oxidation method. It was shown by the CG-MS method and thin layer chromatography that calcium hypochlorite in certain amounts and at certain pH values oxidizes ammonium ions and ammonia, presumably with the formation of free nitrogen, without forming chloramines, reducing concentration of ammonium ions and ammonia to values below the maximum allowable limit for drinking water.

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Meseret, Mihreteab, Gebremariam Ketema, and Haile Kassahun. "Health Risk Assessment and Determination of Some Heavy Metals in Commonly Consumed Traditional Herbal Preparations in Northeast Ethiopia." Journal of Chemistry 2020 (December 8, 2020): 1–7. http://dx.doi.org/10.1155/2020/8883837.

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Background. Most traditional medicines were prepared from plant origins. These plants could be contaminated by heavy metals, pesticides, and/or toxins. Therefore, the aim of the present study was to determine the level of heavy metals such as lead (Pb), cadmium (Cd), chromium (Cr), and copper (Cu) in frequently used traditional herbal preparations sold in Northeast Ethiopia and to estimate their health risks associated with their daily intake. Methods. A total of 6 traditional herbal preparations were randomly collected from local herbal shops of Dessie and Kombolcha town, Northeast Ethiopia.

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Matveichuk, Yulya V. "NITRATE-SELECTIVE ELECTRODE AND ITS USE FOR ANALYSIS OF VEGETABLES AND MINERAL WATERS." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 62, no. 9 (2019): 20–26. http://dx.doi.org/10.6060/ivkkt.20196209.6004.

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The effect of the length of the radicals at the exchange center of the quaternary ammonium salts on the selectivity and the detection limit of the nitrate-selective electrode is investigated. The observed effects of improving the analytical characteristics while reducing the steric availability of the exchange center for quaternary ammonium salts are explained on the basis of the theory of ion association. The composition of the polyvinyl chloride (33 wt.%) electrode membrane for the quaternary ammonium salt (3,4,5-tris bromide (dodecyloxy)benzyltricethylammonium bromide, 5 wt.%) and the plast

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Syariansyah, Iqbal Dwi, Faisar Ananda, and Jamil Jamil. "Limitations of Women's Genitals According to M. Syahrur (Ijtihad Method Analysis Study)." Jurnal Ilmiah Mizani: Wacana Hukum, Ekonomi Dan Keagamaan 8, no. 2 (2024): 315. http://dx.doi.org/10.29300/mzn.v8i2.2815.

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The formulation of the research problem is What are the limits of female genitalia according to M. Syahrur and How does M. Syahrur use the ijtihad method in determining the boundaries of female genitalia. This research is library research, using a reference source by M. Syahrur entitled al-Kitab wa al-Qur'analQur'an Mu'ashirahMu'ashirah as the primary reference, as well as other books which include the issue of the boundaries of women'swomen's private parts. The results of the study show that the application of M. Syahrur'sSyahrur's limit theory (nazhariatul hudud) in the problem of the bounda

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Ahmed, Shahyan S., and Mahmood A. Hasan. "Determination of HeaDetermination of Some Heavy Metals in Three Fish Species from Duhok City Markets in Kurdistan of Iraq." Science Journal of University of Zakho 7, no. 4 (2019): 152–57. http://dx.doi.org/10.25271/sjuoz.2019.7.4.621.

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In this study, the concentrations of some heavy metals including Al, Cu, Fe, Mn, Zn, Cd, Co, Cr, Ni and Pb were determined in the muscles of three commercial fish species available in Duhok city markets in two seasons, using inductively coupled plasma-optical emission spectrometry (ICP-OES), after the wet digestion process. Lowest and highest mean values of metals in µg/g (dry weight) were as follows: Al: Under Detection Limit (UDL)-3.71, Cu: UDL-4.00, Fe: 5.40-21.44, Mn: UDL-3.45, Zn: 13.38-140.11, while Cd, Co, Cr, Ni, and Pb were not detected. The highest levels of Al, Fe and Zn were record

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Abiodun, Bukola Omoyemi, and Paschal Okiroro Iniaghe. "End-of-life mobile phones parts contain toxic metals that make them hazardous, but can also serve as resource reserves for such metals." Ovidius University Annals of Chemistry 34, no. 2 (2023): 83–90. http://dx.doi.org/10.2478/auoc-2023-0011.

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Abstract In this study, the concentration of some toxic metals in different parts of end-of-life mobile phones was assessed. Twenty end-of-life mobile phones of different brands and countries of origin, which were widely in use up to the year 2011, were collected from phone repair workshops in Lagos, Nigeria. The collected mobile phones were disassembled into the phone screens, printed wiring boards, plastic casings and batteries. Disassembled parts were individually milled and pulverized, and digested using HCl, HNO3 and H2O2. Flame atomic absorption spectrometry was used to quantify some tox

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Alvarado, Angel T., Mario Pineda-Pérez, Gaby Moreno-Muñoz, et al. "Abamectin and emamectin in grapes of Vitis vinifera L. from a district of the Valley of Ica-Peru." Journal of Pharmacy & Pharmacognosy Research 11, no. 5 (2023): 775–86. http://dx.doi.org/10.56499/jppres23.1681_11.5.775.

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Context: In 14 districts of the valley of Ica-Peru, Vitis vinifera L. plants are cultivated that produce grapes for consumption as table grapes and raisins (dried grapes); at the same time, for the production of wines and Piscos. Aims: To determine the levels of abamectin and emamectin in grapes of Vitis vinifera L from a district of the Valley of Ica-Peru. Methods: 30 lots (30 kg) of Moscatel grape variety V. vinifera L. were collected from six countryside (artisanal and organic cultivation) of the San Juan Bautista district. The extraction of abamectin (ABM) and emamectin benzoate (EMB) from

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Daniszewski, Piotr, and Ryszard Konieczny. "Heavy Metal Content in Water of Starzyc Lake (North-West Poland)." International Letters of Chemistry, Physics and Astronomy 13 (September 2013): 269–78. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.13.269.

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The present research work deals with the quantification of toxic heavy metals in the water samples collected from Lake of Starzyc (North-West Poland). While the annual average concentration of Cd was calculated as 0.30 ppm in 2008 of the year and 0.21 ppm in 2009 of the year. The values obtained were found to be below the permissible limit of 2.0 ppm set for inland surface water. While the annual average concentration of Cr was calculated as 1,73 ppm in 2008 of the year and 1.67 ppm in 2009 of the year. Which was very much above the permissible limit of 0.1 ppm set for inland surface water. Th

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Daniszewski, Piotr, and Ryszard Konieczny. "Heavy Metal Content in Water of Resko Lake (North-West Poland)." International Letters of Chemistry, Physics and Astronomy 13 (September 2013): 279–87. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.13.279.

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The present research work deals with the quantification of toxic heavy metals in the water samples collected from Lake of Resko (North-West Poland). While the annual average concentration of Cadmium was calculated as 0.34 ppm in 2008 of the year and 0.28 ppm in 2009 of the year. The values obtained were found to be below the permissible limit of 2.0 ppm set for inland surface water. While the annual average concentration of Chromium was calculated as 1,75 ppm in 2008 of the year and 1.97 ppm in 2009 of the year. Which was very much above the permissible limit of 0.1 ppm set for inland surface

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Daniszewski, Piotr, and Ryszard Konieczny. "Heavy Metal Content in Water of Miedwie Lake (North-West Poland)." International Letters of Chemistry, Physics and Astronomy 15 (September 2013): 218–26. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.15.218.

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The present research work deals with the quantification of toxic heavy metals in the water samples collected from Lake of Miedwie (North-West Poland). While the annual average concentration of Cadmium was calculated as 0.45 ppm in 2008 of the year and 0.29 ppm in 2009 of the year. The values obtained were found to be below the permissible limit of 2.0 ppm set for inland surface water. While the annual average concentration of Chromium was calculated as 2.78 ppm in 2008 of the year and 2.50 ppm in 2009 of the year. Which was very much above the permissible limit of 0.1 ppm set for inland surfac

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Daniszewski, Piotr. "Determination of Metals in Sea Water of the Baltic Sea in Międzyzdroje." International Letters of Chemistry, Physics and Astronomy 18 (September 2013): 13–22. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.18.13.

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The present research work deals with the quantification of toxic heavy metals in the water samples collected from sea water in Międzyzdroje. While the annual average concentration of Cadmium was calculated as 0.44 ppm in 2008 of the year and 0.46 ppm in 2009 of the year. The values obtained were found to be below the permissible limit of 2.0 ppm set for inland surface water. While the annual average concentration of Chromium was calculated as 2.67 ppm in 2008 of the year and 2.64 ppm in 2009 of the year. Which was very much above the permissible limit of 0.1 ppm set for inland surface water. T

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Daniszewski, Piotr. "Determination of Metals in Sea Water of the Baltic Sea in Międzyzdroje." International Letters of Chemistry, Physics and Astronomy 18 (September 28, 2013): 13–22. http://dx.doi.org/10.56431/p-o9lfg9.

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The present research work deals with the quantification of toxic heavy metals in the water samples collected from sea water in Międzyzdroje. While the annual average concentration of Cadmium was calculated as 0.44 ppm in 2008 of the year and 0.46 ppm in 2009 of the year. The values obtained were found to be below the permissible limit of 2.0 ppm set for inland surface water. While the annual average concentration of Chromium was calculated as 2.67 ppm in 2008 of the year and 2.64 ppm in 2009 of the year. Which was very much above the permissible limit of 0.1 ppm set for inland surface water. T

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38

Daniszewski, Piotr, and Ryszard Konieczny. "Heavy Metal Content in Water of Resko Lake (North-West Poland)." International Letters of Chemistry, Physics and Astronomy 13 (May 3, 2013): 279–87. http://dx.doi.org/10.56431/p-2t4gw6.

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The present research work deals with the quantification of toxic heavy metals in the water samples collected from Lake of Resko (North-West Poland). While the annual average concentration of Cadmium was calculated as 0.34 ppm in 2008 of the year and 0.28 ppm in 2009 of the year. The values obtained were found to be below the permissible limit of 2.0 ppm set for inland surface water. While the annual average concentration of Chromium was calculated as 1,75 ppm in 2008 of the year and 1.97 ppm in 2009 of the year. Which was very much above the permissible limit of 0.1 ppm set for inland surface

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Daniszewski, Piotr, and Ryszard Konieczny. "Heavy Metal Content in Water of Miedwie Lake (North-West Poland)." International Letters of Chemistry, Physics and Astronomy 15 (June 29, 2013): 218–26. http://dx.doi.org/10.56431/p-g87u9p.

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The present research work deals with the quantification of toxic heavy metals in the water samples collected from Lake of Miedwie (North-West Poland). While the annual average concentration of Cadmium was calculated as 0.45 ppm in 2008 of the year and 0.29 ppm in 2009 of the year. The values obtained were found to be below the permissible limit of 2.0 ppm set for inland surface water. While the annual average concentration of Chromium was calculated as 2.78 ppm in 2008 of the year and 2.50 ppm in 2009 of the year. Which was very much above the permissible limit of 0.1 ppm set for inland surfac

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40

Daniszewski, Piotr, and Ryszard Konieczny. "Heavy Metal Content in Water of Starzyc Lake (North-West Poland)." International Letters of Chemistry, Physics and Astronomy 13 (May 3, 2013): 269–78. http://dx.doi.org/10.56431/p-5557vs.

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The present research work deals with the quantification of toxic heavy metals in the water samples collected from Lake of Starzyc (North-West Poland). While the annual average concentration of Cd was calculated as 0.30 ppm in 2008 of the year and 0.21 ppm in 2009 of the year. The values obtained were found to be below the permissible limit of 2.0 ppm set for inland surface water. While the annual average concentration of Cr was calculated as 1,73 ppm in 2008 of the year and 1.67 ppm in 2009 of the year. Which was very much above the permissible limit of 0.1 ppm set for inland surface water. Th

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Jibril, M. K., N. N. Garba, R. Nasiru, and N. Ibrahim. "ASSESSMENT OF RADON CONCENTRATIONS IN WATER SOURCES FROM SABON GARI LOCAL GOVERNMENT AREA, KADUNA STATE, NIGERIA." FUDMA JOURNAL OF SCIENCES 5, no. 1 (2021): 254–60. http://dx.doi.org/10.33003/fjs-2021-0501-563.

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Radon concentration in water is one of the major problems of radiation protection in recent years. This work assessed the radon concentration in water sources from Sabon Gari, local government area, Kaduna State. The water samples were collected and analyzed using Liquid scintillation counter (Tri-Carb-LSA1000). The overall mean radon concentration of the waters samples was found to be 14.9 BqL-1, which is higher than the maximum permissible limit of 11.1 BqL-1 by USEPA and the world average value of 10 BqL-1 by UNSCEAR and WHO. The overall Annual effective dose (AED) due to inhalation of rado

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Chukwumati, J.A, F.I Isoma, and A. Dickson Achimota. "Evaluation of Chemical Properties and Heavy Metals Status of Fluted Pumpkin (Telfairia occidentalis) in a Soil along Build up Traffic Road, Port Harcourt, Nigeria." Greener Journal of Agricultural Sciences 13, no. 1 (2023): 37–45. https://doi.org/10.5281/zenodo.7832180.

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<strong>The study was conducted along University of Port Harcourt - Choba, heavily built traffic road, to evaluate the impact of vehicular activities on heavy metals lead (Pb), Cadmium (Cd) and Zinc (Zn) on soil and Fluted Pumpkin. Three traverses of 50 meters apart were cut along University of Port Harcourt - Choba major road, composite soil samples collected from each of the traverse cuts at distances of (0- 5) and 15 meters while the control samples were collected from 100 meters away at a depth of 0-15 and 15-30 cm respectively. Plant tissue samples (roots, stems and shoots) of <em>Telfair

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CHUKWUMATI, J. A., F. I. ISOMA, and ACHIMOTA ,A. DICKSON. "EVALUATION OF CHEMICAL PROPERTIES AND HEAVY METALS STATUS OF FLUTED PUMPKIN (TELFAIRIA OCCIDENTALIS) IN A SOIL ALONG BUILD UP TRAFFIC ROAD, PORT HARCOURT, NIGERIA." Greener Journal of Agricultural Sciences 13, no. 1 (2023): 37–45. https://doi.org/10.15580/gjas.2023.1.011923008.

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This study was conducted along University of Port Harcourt – Choba, heavily built traffic road, to evaluate the impact of vehicular activities on heavy metals lead (Pb), Cadmium (Cd) and Zinc (Zn) on soil and Fluted Pumpkin. Three traverses of 50 meters apart were cut along University of Port Harcourt – Choba major road, composite soil samples collected from each of the traverse cuts at distances of (0- 5) and 15 meters while the control samples were collected from 100 meters away at a depth of 0-15 and 15-30 cm respectively. Plant tissue samples (roots, stems and shoots) of Telfairia occident

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44

Hatami, Soha, Zahra Mousavi, and Parisa Ziarati. "Health risk assessment of heavy metals (lead and cadmium) in transgenic corn in Tehran." Biological Environment and Pollution 2, no. 2 (2022): 49–59. http://dx.doi.org/10.31763/bioenvipo.v2i2.584.

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Corn plant and the products made from corn is one of the major transgenic concerning in the world, and due to public concerns about the presence of heavy metals in this product; the present study investigated the food safety in transgenic corn samples due to the presence of lead and cadmium. Iran has the highest exchange of agricultural products. Five packaged popular brands of raw corn samples and one unpackaged one as the bulk sample were purchased from Tehran markets in 2021, and after confirming transgenicity by quantitative real-time PCR and then wet digestion method. The heavy metal cont

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Pal, T. K., R. K. Bajpai, A. Acharya, R. S. Bhatia, and D. Datta. "Investigation on Suitability of Argillaceous Rocks of Vindhyan Super Group as Host Rock for Deep Geological Repository using Thermal Analysis." Journal of The Indian Association of Sedimentologists 38, no. 1 (2021): 119–25. http://dx.doi.org/10.51710/jias.v38i1.158.

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Argillaceous rocks are being considered as a potential host rock for deep geological repository (DGR) for hosting vitrified high level radioactive waste canisters by many countries worldwide. Numerical simulation of thermal evolution in the repository environment is an important study for the long term safety performance assessment of a DGR. In this study, thermal dissipation in the near field area of a conceptual repository in Ganurgarh shales from Bhander Group of Vindhyan Super Group, which is the thickest sedimentary succession of India, has been simulated using commercial software FLAC3D,

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Abdallah, Girgin, and Baydar. "Mycotoxin Detection in Maize, Commercial Feed, and Raw Dairy Milk Samples from Assiut City, Egypt." Veterinary Sciences 6, no. 2 (2019): 57. http://dx.doi.org/10.3390/vetsci6020057.

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This survey was conducted to investigate the contamination by multiple mycotoxins, aflatoxins (AFB1, AFB2, AFG1, and AFG2), ochratoxin A (OTA), and zearalenone (ZEA) in 61 samples of maize and 17 commercial animal feed samples, and of aflatoxin M1 (AFM1) in raw dairy milk samples (n = 20) collected from Assiut City in Upper Egypt. Multi-mycotoxin immunoaffinity columns were used for samples cleanup and mycotoxin purification. An HPLC–FLD system with an on-line post-column photochemical derivatization was used for the detection of the target toxins. AFB1 was detected in both maize (n = 15) and

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Kryshev, A. I., T. G. Sazykina, and A. A. Buryakova. "Impact of accounting of 238U chemical toxicity on its permissible release level to atmosphere." Radiatsionnaya Gygiena = Radiation Hygiene 14, no. 2 (2021): 21–26. http://dx.doi.org/10.21514/1998-426x-2021-14-2-21-26.

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At present, the permissible atmospheric release levels of 238U are evaluated only on a basis of its radiation impact on population. At the same time, uranium belongs to the 1st hazard class (extremely dangerous chemicals) by its toxic effect. Limitation of the 238U release to the atmosphere is calculated separately using two criteria – radiation protection (annual dose limits) and chemical toxicity of uranium. It is shown that the permissible release level of 238U by radiation criteria is 100 – 250 times higher than the maximum release level limited by chemical toxicity of uranium. Annual inta

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Prado, Guilherme, Marize Silva de Oliveira, Adriana Souza Lima, and Ana Paula Aprigio Moreira. "Occurrence of aflatoxin M1 in parmesan cheese consumed in Minas Gerais, Brazil." Ciência e Agrotecnologia 32, no. 6 (2008): 1906–11. http://dx.doi.org/10.1590/s1413-70542008000600033.

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Aflatoxin M1 (AFM1) may occur in milk and milk products, resulting from the ingestion of aflatoxin B1 in feedstuffs by dairy cow. A total of 88 samples of Parmesan cheese marketed in Minas Gerais state, Brazil, from March 2004 to December 2004, were analyzed for AFM1 by high-performance liquid chromatography (HPLC) with a fluorescence detector following sample clean-up using immunoaffinity columns. AFM1 was detected in 40 of the 88 samples (46.4%). However, only two samples among these were contaminated at a level above the maximum permissible limit (250 ng kg-1) accepted by European Union for

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Soran, Maria-Loredana, Aura Nicoleta Sîrb, Ildiko Lung, et al. "A Multi-Method Approach for Impact Assessment of Some Heavy Metals on Lactuca sativa L." Molecules 28, no. 2 (2023): 759. http://dx.doi.org/10.3390/molecules28020759.

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Heavy metals represent a large category of pollutants. Heavy metals are the focus of researchers around the world, mainly due to their harmful effects on plants. In this paper, the influence of copper, cadmium, manganese, nickel, zinc and lead, present in soil in different concentrations (below the permissible limit, the maximum permissible concentration and a concentration higher than the maximum permissible limit) on lettuce (Lactuca sativa L.) was evaluated. For this purpose, the authors analyzed the variation of photosynthetic pigments, total polyphenols, antioxidant activity and the eleme

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Martínez, Blanca Celeste Saucedo, Liliana Márquez Benavides, Gustavo Santoyo, and Juan Manuel Sánchez-Yáñez. "Biorecovery of Agricultural Soil Impacted by Waste Motor Oil with Phaseolus vulgaris and Xanthobacter autotrophicus." Plants 11, no. 11 (2022): 1419. http://dx.doi.org/10.3390/plants11111419.

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Agricultural soil contamination by waste motor oil (WMO) is a worldwide environmental problem. The phytotoxicity of WMO hydrocarbons limits agricultural production; therefore, Mexican standard NOM-138-SEMARNAT/SSA1-2012 (NOM-138) establishes a maximum permissible limit of 4400 ppm for hydrocarbons in soil. The objectives of this study are to (a) biostimulate, (b) bioaugment, and (c) phytoremediate soil impacted by 60,000 ppm of WMO, to decrease it to a concentration lower than the maximum allowed by NOM-138. Soil contaminated with WMO was biostimulated, bioaugmented, and phytoremediated, and t

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