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Journal articles on the topic 'Cadmium – Absorption and adsorption'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Casiraghi, Magela Paula, Samuel Luporini, and Eduardo Mendes da Silva. "Uptake of cadmium by Pseudokirchneriella supcapitata." Brazilian Archives of Biology and Technology 48, no. 6 (2005): 1027–34. http://dx.doi.org/10.1590/s1516-89132005000800019.

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In this work the microalgae Pseudokirchneriella supcapitata was used for the removal of the cadmium in liquids. The accumulations of metal ions by the alga occur in two stages: a very fast absorption (passive adsorption) proceeded by a slower absorption (activate absorption). A mathematical model based on the surface absorption and on the transport into the interior of the cellular membrane was developed. The simulation model kinetic parameters were experimentally obtained. Through the results observed, the mathematical model was shown to be suitable when compared to the experimental results,

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2

Kakaei, Ahmad, and Mohammad Kazemeini. "Removal of Cd (II) in Water Samples Using Modified Magnetic Iron Oxide Nanoparticle." Iranian Journal of Toxicology 10, no. 1 (2016): 9–14. http://dx.doi.org/10.32598/ijt.10.1.299.1.

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Background: Heavy metals, even at low concentrations, are harmful to human health and environment. Cadmium as a heavy metal is highly toxic and can cause serious threat to living organisms. This research was designed to evaluate the adsorption potential of modified magnetic iron nanoparticles by 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol ligand for the removal of cadmium ions from water solutions. Methods: This study was conducted in Ilam Branch, Islamic Azad University, Iran, in 2014. Modified magnetic iron nanoparticle was used as adsorbent for the removal of cadmium from aqueous solution

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3

Abbasi, Shahriar, Mehdi ShanbehDehbalai, and Hossein Khani. "Solid phase extraction of trace amounts of cadmium(II) ions in water and food samples using iron magnetite nanoparticles modified by sodium dodecyl sulfate and 2-mercaptobenzothiazole." Water Science and Technology 75, no. 6 (2017): 1440–46. http://dx.doi.org/10.2166/wst.2017.010.

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A new, simple and rapid method for solid phase extraction and preconcentration of trace amounts of cadmium ions using 2-mercaptobenzothiazole/sodium dodecyl sulfate immobilized on magnetite nanoparticles (MBT-SDS-MNPs) was proposed. The method is based on the extraction of cadmium ions via complexation with MBT immobilized on SDS-coated MNPs and their determination by flame atomic absorption spectrometry. The effects of different parameters – pH; eluent type, concentration and volume; amounts of salt and adsorbent; contact time and interfering ions – on the adsorption of cadmium ions were stud

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4

Shirani, Mahboube, Ali Akbari, and Mohsen Hassani. "Adsorption of cadmium(ii) and copper(ii) from soil and water samples onto a magnetic organozeolite modified with 2-(3,4-dihydroxyphenyl)-1,3-dithiane using an artificial neural network and analysed by flame atomic absorption spectrometry." Analytical Methods 7, no. 14 (2015): 6012–20. http://dx.doi.org/10.1039/c5ay01269d.

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5

Papelis, Charalambos, Gordon E. Brown, George A. Parks, and James O. Leckie. "X-ray Absorption Spectroscopic Studies of Cadmium and Selenite Adsorption on Aluminum Oxides." Langmuir 11, no. 6 (1995): 2041–48. http://dx.doi.org/10.1021/la00006a033.

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6

Hallaj, Rahman, Soleiman Bahar, Bahareh Babamiri, and Shiva Zandi. "Adsorption of cadmium(II) ions from aqueous solution on exfoliated graphene nanosheets and its determination by flame atomic absorption spectrometry." Canadian Journal of Chemistry 92, no. 1 (2014): 62–67. http://dx.doi.org/10.1139/cjc-2012-0456.

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In this study, we investigated the enrichment ability of exfoliated graphene nanosheets for determination of trace cadmium in water and vegetable samples with flame atomic absorption spectrometry. Various experimental parameters that could affect the extraction efficiency have been investigated. Under the optimum conditions, the enrichment factor of the method for the target analyte was 100. A liner response was achieved in the concentration range of 0.3–28.8 ng mL−1. The detection limit and precision of the method were 0.2 ng mL−1 and 0.8%, respectively. The proposed method was applied to det

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7

Telkhozhayeva, Madina, Gulziya Seilkhanova, A. Rakhym, Ainur Imangaliyeva, and Dina Akbayeva. "Sorption of lead and cadmium ions from aqueous solutions using modified zeolite." Chemical Bulletin of Kazakh National University, no. 4 (December 28, 2018): 16–22. http://dx.doi.org/10.15328/cb980.

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The processes of lead and cadmium ions sorption by modified zeolite of Chankanai deposit were studied. Chitosan was used as a surface modifier due to its properties: nontoxicity, biodegradability and biocompatibility. The adsorption process was carried out at room temperature (295 K) and pH 7 under static conditions. The synthesized sorbent has been characterized by scanning electron microscopy (SEM), elemental analysis; the concentrations of Pb(II) and Cd(II) ions before and after adsorption were determined using atomic absorption spectroscopy (AAS). The Si/Al ratio of the zeolite was found t

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8

Zahabi, Saeed Reza, Seyed Abdolkarim Hosseini Ravandi, and Alireza Allafchian. "Removal of nickel and cadmium heavy metals using nanofiber membranes functionalized with (3-mercaptopropyl)trimethoxysilane (TMPTMS)." Journal of Water and Health 14, no. 4 (2016): 630–39. http://dx.doi.org/10.2166/wh.2016.267.

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Functionalized nanofibrous membranes have been produced via electrospinning with a polymer solution of 19% (w/w) of nylon 66 prepared in a formic acid/chloroform mixture (75:25 v/v). The optimum parameters of electrospinning, like voltage, flow rate, tip and collector distances, were achieved and produced nanofiber membranes with a thickness of 287 nm. Then the nanofiber membranes were functionalized by (3-mercaptopropyl)trimethoxysilane (TMPTMS) at various amounts. Three different initial concentrations of metal ions and three different levels of pH were chosen. The effect of filtration proce

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9

Lu, Min, Xu Zhang, and Nuo Chen. "The Application of Self-Assembled of Meso-2,3-Dimercaptosuccinic Acid-Polydopamine-Zinc Oxide for Trace Cadmium Analysis." Applied Sciences 10, no. 7 (2020): 2462. http://dx.doi.org/10.3390/app10072462.

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Nanomaterials have been applied in the analysis of trace contaminants in aquatic samples; however, the adsorption affinity of heavy metal ions to metallic oxide nanoparticles is low. Meso-2,3-dimercaptosuccinic acid-polydopamine-zinc oxide (DMSA/PDA/ZnO) was synthesized through a facile self-assembly process for enhancing the adsorption capacity of ZnO to cadmium cation (Cd(II)). A method for the analysis of trace Cd(II) in water samples was developed while using dimercaptosuccinic acid/Polydopamine/zinc oxide (DMSA/PDA/ZnO) as an adsorbent and atomic absorption spectrometry (AAS) as a means o

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10

Nuryono, Nuryono, and Narsito Narsito. "EFFECT OF DIATOMEAOUS EARTH TREATMENT USING HYDROGEN CHLORIDE AND SULFURIC ACID ON KINETICS OF CADMIUM(II) ADSORPTION." Indonesian Journal of Chemistry 2, no. 2 (2010): 107–12. http://dx.doi.org/10.22146/ijc.21922.

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In this research, treatment of diatomaceous earth, Sangiran, Central Java using hydrogen chloride (HCl) and sulfuric acid (H2SO4) on kinetics of Cd(II) adsorption in aqueous solution has been carried out. The work was conducted by mixing an amount of grounded diatomaceous earth (200 mesh in size) with HCl or H2SO4 solution in various concentrations for two hours at temperature range of 100 - 150oC. The mixture was then filtered and washed with water until the filtrate pH is approximately 7 and then the residue was dried for four hours at a temperature of 70oC. The product was used as an adsorb

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11

Zargar, R. A., M. Arora, S. Chackrabarti, S. Ahmad, J. Kumar, and A. K. Hafiz. "Alcohol vapor sensing by cadmium-doped zinc oxide thick films based chemical sensor." Modern Physics Letters B 30, no. 12 (2016): 1650244. http://dx.doi.org/10.1142/s0217984916502444.

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Cadmium-doped zinc oxide nanoparticles were derived by simple chemical co-precipitation route using zinc acetate dihydrate and cadmium acetate dihydrate as precursor materials. The thick films were casted from chemical co-precipitation route prepared nanoparticles by economic facile screen printing method. The structural, morphological, optical and electrical properties of the film were characterized relevant to alcohol vapor sensing application by powder XRD, SEM, UV-VIS and DC conductivity techniques. The response and sensitivity of alcohol (ethanol) vapor sensor are obtained from the recove

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12

Nan, Geng, Wang Peifang, Wang Chao, Hou Jun, Qian Jin, and Miao Lingzhan. "Mechanisms of cadmium accumulation (adsorption and absorption) by the freshwater bivalve Corbicula fluminea under hydrodynamic conditions." Environmental Pollution 212 (May 2016): 550–58. http://dx.doi.org/10.1016/j.envpol.2016.01.091.

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13

Gonçalves Jr., Affonso C., Fernanda Rubio, Ana P. Meneghel, Gustavo F. Coelho, Douglas C. Dragunski, and Leonardo Strey. "The use of Crambe abyssinica seeds as adsorbent in the removal of metals from waters." Revista Brasileira de Engenharia Agrícola e Ambiental 17, no. 3 (2013): 306–11. http://dx.doi.org/10.1590/s1415-43662013000300009.

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This study aimed to evaluate the efficacy of crambe seeds (Crambe abyssinica Hochst) as adsorbent material in the removal of the toxic metals cadmium, lead and chromium from contaminated solutions. The byproduct was obtained from oil extraction of crambe seeds in a Soxhlet system. In kinetic tests, the adsorbent masses had varied in solutions containing the metals under pH 5.0 and 7.0. Metal concentrations were determined by flame atomic absorption spectrometry (FAAS). According to optimal conditions found, the adsorption assays were performed for obtaining the isotherms of each metal, which w

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14

Utomo, Suryadi Budi, Jumina Jumina, Dwi Siswanta, and Mustofa Mustofa. "KINETICS AND EQUILIBRIUM MODEL OF Pb(II) AND Cd(II) ADSORPTION ONTO TETRAKIS-THIOMETHYL-C-4-METHOXYPHENYLCALIX[4]RESORCINARENE." Indonesian Journal of Chemistry 12, no. 1 (2012): 49–56. http://dx.doi.org/10.22146/ijc.21371.

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The ability of tetrakis-thiomethyl-C-4-methoxyphenylcalix[4]resorcinarene for trapping Pb(II) and Cd(II) from aqueous solution at different pH, contact times, and initial metal concentration was investigated. Concentration of metal ions before and after interaction was analyzed by Atomic Absorption Spectrophotometer (AAS). The result indicated that tetrakis-thiomethyl-C-4-methoxyphenylcalix[4]resorcinarene is a good host for metal ions, where Cd(II) sorption capacity was higher than that of Pb(II). Effect of pH on batch experiments for the mentioned ions indicated that the optimum pH for metal

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15

Jafarian, V., and F. Ghaffari. "A unique metallothionein-engineered in Escherichia coli for biosorption of lead, zinc, and cadmium; absorption or adsorption?" Microbiology 86, no. 1 (2017): 73–81. http://dx.doi.org/10.1134/s0026261717010064.

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16

Zhang, Dong, Ping Yu, and Xiang He. "Preparation and Characterization of Porous Calcium Titanate-Based Coated Glass Fiber Filter Material and Its Application in Determination of Lead and Cadmium Ion Concentrations in Water." Journal of AOAC INTERNATIONAL 94, no. 6 (2011): 1925–33. http://dx.doi.org/10.5740/jaoacint.10-290.

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Abstract Glass fiber filter coated with a porous block adsorption agent of calcium titanate (GPCTO) was prepared by the citric acid sol-gel method, and characterized by X-ray diffraction, scanning electron microscopy, and FTIR spectrophotometry. Its Pb2+ and Cd2+ adsorption properties from water were studied. Adsorption and elution were investigated under different conditions, as were the thermodynamics and kinetics of adsorption, using Cd ion as representative. Calcium titanate may react with glass fiber, forming Si-O-Ti and B-O-Ti bonds and becoming a composite adsorbent. The Pb and Cd ions

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17

González-Albarrán, René, Josefina de Gyves, and Eduardo Rodríguez de San Miguel. "Determination of Cadmium (II) in Aqueous Solutions by In Situ MID-FTIR-PLS Analysis Using a Polymer Inclusion Membrane-Based Sensor: First Considerations." Molecules 25, no. 15 (2020): 3436. http://dx.doi.org/10.3390/molecules25153436.

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Environmental monitoring is one of the most dynamically developing branches of chemical analysis. In this area, the use of multidimensional techniques and methods is encouraged to allow reliable determinations of metal ions with portable equipment for in-field applications. In this regard, this study presents, for the first time, the capabilities of a polymer inclusion membrane (PIM) sensor to perform cadmium (II) determination in aqueous solutions by in situ visible (VIS) and Mid- Fourier transform infrared spectroscopy (MID-FTIR) analyses of the polymeric films, using a partial least squares

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Nuryono, Nuryono, and Suyanta Suyanta. "A STUDY ON INTERACTION OF Cd(II) AND DIATOMACEOUS EARTH IN ADSORPTION PROCESS." Indonesian Journal of Chemistry 4, no. 2 (2010): 125–31. http://dx.doi.org/10.22146/ijc.21865.

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In this research, interaction occurring in adsorption process between Cd(II) and active site of diatomaceous earth has been studied. The study was carried out by evaluating Cd(II) adsorption on diatomaceous earth at various pHs, either for the earths without treatment, those after being heated or those treated with sulfuric acid and hydrogen chloride. Adsorption was performed by mixing diatomaceous earth, without and with treatments, and Cd(II) solution for one hour at various pHs (2 - 7), and un-adsorbed metallic ion was analyzed by atomic absorption spectroscopy (AAS). The treatments of diat

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19

Rakhtshah, Jamshid. "Separation and determination of cadmium in water samples based on functionalized carbon nanotube by syringe filter membrane- micro solid-phase extraction." Analytical Methods in Environmental Chemistry Journal 4, no. 01 (2021): 5–15. http://dx.doi.org/10.24200/amecj.v4.i01.132.

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A simple and fast separation of cadmium (Cd) based on functionalized carbon nanotubes with 2,3-dimercapto-1-propanol (CNTs@DHSP) was achieved in water samples before a determination by atom trap flame atomic absorption spectrometry (AT-FAAS). In this study, Cd(II) ions were extracted by syringe filter membrane-micro solid phase extraction procedure(SFM-μ-SPE). Firstly, 20 mg of the CNTs@DHSP as solid-phase added to 20 mL of water sample in a syringe, then dispersed for 3 min after adjusting pH up to 7 and pass through SFM very slowly. After extraction, the Cd(II) ions were back-extracted from

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20

Zhang, Xiaoxing, Changle Sun, Li Zhang, et al. "Adsorption studies of cadmium onto magnetic Fe3O4@FePO4 and its preconcentration with detection by electrothermal atomic absorption spectrometry." Talanta 181 (May 2018): 352–58. http://dx.doi.org/10.1016/j.talanta.2018.01.023.

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21

Miroshnychenko, N. N., and O. A. Kutz. "Selective absorption of heavy metals by soil and humic acids at different pH levels." Fundamental and Applied Soil Science 17, no. 1-2 (2016): 74–82. http://dx.doi.org/10.15421/041607.

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Studying processes of sorption-desorption of heavy metals from soil and its individual components allow to predict long-term effects under conditions of multielement contamination. Cations of heavy metals are showing competitive relationship due to their specific adsorption by components of the soil absorption complex, in particular humic acids. Interaction of chernozem podzolized heavy loam, isolated preparation of humic acids and soil residue after its removal with the solution which contain sulphates of Zn, Cd, Ni, Co and Cu in equal ratio were simulated at different pH levels. The task of

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Gouda, Ayman A., Ali H. Amin, Ibrahim S. Ali, and Zakia Al Malah. "Green Dispersive Micro Solid-Phase Extraction using Multiwalled Carbon Nanotubes for Preconcentration and Determination of Cadmium and Lead in Food, Water, and Tobacco Samples." Current Analytical Chemistry 16, no. 4 (2020): 381–92. http://dx.doi.org/10.2174/1573411014666180619145236.

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Background: Cadmium (Cd2+) and lead (Pb2+) have acute and chronic effects on humans and other living organisms. In the present work, new, green and accurate dispersive micro solid-phase extraction (DμSPE) method for the separation and preconcentration of trace amounts of cadmium (Cd2+) and lead (Pb2+) ions in various food, water and tobacco samples collected from Saudi Arabia prior to its Flame Atomic Absorption Spectrometric (FAAS) determinations was developed. Methods: The proposed method was based on a combination of oxidized multiwalled carbon nanotubes (O-MWCNTs) with a new chelating agen

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Mutiara, Tintin, Fauzan I. Muhandi, Ayatullah Alhumaini, Achmad Chafidz, and Pratikno Hidayat. "Removal of Lead (Pb²⁺) from Aqueous Solution Using Bio-Adsorbent Prepared from Cassava Stem Pith." Materials Science Forum 981 (March 2020): 331–35. http://dx.doi.org/10.4028/www.scientific.net/msf.981.331.

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It has been known that some industrial liquid wastes usually contain a variety of heavy metals such as Cd (Cadmium), Pb (Lead), Ni (Nickel), Cr (Chromium), As (Arsenic), Cu (Copper), and Fe (Iron). If these liquid wastes are not managed properly, it will damage the water environment, especially the water body like rivers and lakes. Various methods have been applied to remove heavy metals from these liquid wastes, such as precipitation, ion exchange, membrane processes, adsorption, coagulation, and flotation. One common method that can be applied to manage waste that contain heavy metals is an

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Tahir, Masdiana, Ineks Safitri, and Asriani Suhaenah. "Analisis Pektin Albedo Buah Jeruk Pamelo sebagai Adsorben Logam Berat Timbal (Pb), Kadmium (Cd) dan Tembaga (Cu)." Jurnal Farmasi Galenika (Galenika Journal of Pharmacy) 5, no. 2 (2019): 158. http://dx.doi.org/10.22487/j24428744.0.v0.i0.12134.

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Pamelo citrus is a fruit plant having the potential to be developed in Indonesia. One of the centers for producing large oranges or Pamelo citrus in South Sulawesi is Pangkep Regency. One of the components of the Pamelo citrus is pectin. Pectin is a polysaccharide compound with a high molecular weight which is widely found in plants and it can absorb metals because they contain carboxylic groups. This study aimed to analyze pectin from albedo pamelo citrus fruit as an adsorbent for heavy metal plumbum (Pb), cadmium (Cd) and copper (Cu). The method used was atomic absorption spectrophotometer w

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Tahir, Masdiana, Ineks Safitri, and Asriani Suhaenah. "Analisis Pektin Albedo Buah Jeruk Pamelo sebagai Adsorben Logam Berat Timbal (Pb), Kadmium (Cd) dan Tembaga (Cu)." Jurnal Farmasi Galenika (Galenika Journal of Pharmacy) (e-Journal) 5, no. 2 (2019): 158–65. http://dx.doi.org/10.22487/j24428744.2019.v5.i2.12134.

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Pamelo citrus is a fruit plant having the potential to be developed in Indonesia. One of the centers for producing large oranges or Pamelo citrus in South Sulawesi is Pangkep Regency. One of the components of the Pamelo citrus is pectin. Pectin is a polysaccharide compound with a high molecular weight which is widely found in plants and it can absorb metals because they contain carboxylic groups. This study aimed to analyze pectin from albedo pamelo citrus fruit as an adsorbent for heavy metal plumbum (Pb), cadmium (Cd) and copper (Cu). The method used was atomic absorption spectrophotometer w

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Boyanov, M. I., S. D. Kelly, K. M. Kemner, B. A. Bunker, J. B. Fein, and D. A. Fowle. "Adsorption of cadmium to Bacillus subtilis bacterial cell walls: a pH-dependent X-ray absorption fine structure spectroscopy study." Geochimica et Cosmochimica Acta 67, no. 18 (2003): 3299–311. http://dx.doi.org/10.1016/s0016-7037(02)01343-1.

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Moray, Olivia Indra, Djefry Tani, and Dokri Gumolung. "Optimalisasi Adsorpsi Kitosan Dari Kitin Cangkang Keong Sawah (Pilla Ampullacea) Terhadap Logam Kadmium (Cd)." Fullerene Journal of Chemistry 6, no. 1 (2021): 1. http://dx.doi.org/10.37033/fjc.v6i2.172.

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This research aims to make the chitosan from the chitin of the Snail shell (Pilla ampulacea) which can be used as a cadmium metal adsorbent (Cd). It is derived from the isolation of the snail shells through 2 phases, which are deproteination to remove protein and demineralization to remove mineral salts. The formed Kitin is transformed into Chitosan by deacetylated using NaOH 60%. Kitin and Chitosan were acquired, identified by FTIR. The results showed that the chitin yield was 26.81% of the shell weight of 400 grams and the rendemen Chitosan was 31.78% of the weight of chitin. The results of

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Shakya, Sudarshana, Bindra Devi Shakya, Amrita Tamrakar, Bijaya Adhikari, Sabita Nepal, and Pawan Raj Shakya. "Biosorptio Of Cd2+ By Wildtype And Cadmium Resistant, CdR-99 Cell Line Of Chlorella Vulgaris." Scientific World 14, no. 14 (2021): 115–23. http://dx.doi.org/10.3126/sw.v14i14.35022.

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Removal of heavy metals is very important in wastewater treatment process, due to their toxic effects on the environment. Biological treatment has attracted researchers for years since it has many advantages over physical and chemical methods for removing heavy metals from wastewater. The purpose of this research was to assess the biosorption of Cd2+ by wildtype (WT) and CdR-99 resistant line of Chlorella vulgaris confirming mechanisms of resistance to Cd2+ toxicity and the effect of the variable concentrations of Cd2+ on their growth. Exposure of both algal cell lines to increasing Cd2+ conce

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Bijang, Catherina M., Helna Tehubijuluw, and Terence Ghereds Kaihatu. "Biosorpsi Ion Logam Kadmium (Cd2+) Pada Biosorben Rumput Laut Coklat (Padina australis) Asal Pantai Liti Pulau Kisar." Indo. J. Chem. Res. 6, no. 1 (2018): 51–58. http://dx.doi.org/10.30598//ijcr.2018.6-cath.

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The research about biosorption of Cadmium (Cd2+) metal ion in brown seaweed biosorben (Paladina australis) from Liti beach, Kisar island has been done. Analysis of decreasing Cd2+ content using Atomic Absorption Spectrophotometer (SSA) and also use FTIR to know functional groups contained in alginate compounds. A total of 0.5 g of brown seaweed powder was introduced into 25 mL of Cd2+ 50 ppm solution with variations of pH 1-7 and shaker for five hours. After the optimum pH was obtained, the adsorption process was applied on pH 5 solution with variation of contact time 1, 3, and 5 hours, after

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Alabbad, Eman A. "Estimation the Sorption Capacity of Chemically Modified Chitosan Toward Cadmium Ion in Wastewater Effluents." Oriental Journal of Chemistry 35, no. 2 (2019): 757–65. http://dx.doi.org/10.13005/ojc/350236.

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This study aimed to investigation of Cd(II) ion removal from wastewater using chitosan-vanillin as sorbent I and chitosan-ortho-vanillin as sorbent II under various experimental conditions. The influence of pH, initial Cd(II) ion concentrations and isotherm studies, temperature and thermodynamic studies, adsorbent mass, adsorption time and kinetic studies on the sorption process have been studied using different experiments. The residual ion quantity is estimated through atomic absorption spectrometry. The maximum Cd(II) ion removal is obtained at pH 6 with highest uptake of ions after agitati

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Hajialigol, Saeed, Mohammad Ali Taher, and Akbar Malekpour. "Determination of Trace Amounts of Zinc by Flame Atomic Absorption Spectrometry After Preconcentration with Modified Clinoptilolite Zeolite." Journal of AOAC INTERNATIONAL 91, no. 6 (2008): 1446–52. http://dx.doi.org/10.1093/jaoac/91.6.1446.

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Abstract Natural clinoptilolite was used as a sorbent material for solid-phase extraction and preconcentration of zinc. Clinoptilolite was first saturated with cadmium (II) and then modified with benzyldimethyltetradecylammonium chloride for increasing adsorption of 3-(2-arsenophenylazo)-4,5-dihydroxy-2,7-naphthalene disulfonic acid (neothorin). Zinc was quantitatively retained on the adsorbent by the column method in the pH range of 3.84.2 at a flow rate of 1 mL/min. It was eluted from the column with 5.0 mL 2 M nitric acid solution at a flow rate of 1 mL/min and determined by flame atomic ab

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Balicka, Adrianna, and Jan Szadkowski. "Analysis of adsorption of heavy metals from water solutions by wood of selected domestic species using X-Ray Fluorescence (XRF)." Annals of WULS, Forestry and Wood Technology 111 (September 30, 2020): 73–82. http://dx.doi.org/10.5604/01.3001.0014.6773.

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Analysis of adsorption of heavy metals from water solutions by wood of selected domestic species using X-Ray Fluorescence (XRF).The aim of this study was to analyze the absorption of three specific heavy metals from model water solution by wood species from domestic Polish forests. This paper focuses on XRF method to determine metal content in samples. European aspen (Populus tremula L.) and Black locust (Robinia pseudoacacia L.) have been chosen. Firstly, shavings were prepared and soaked with standard solutions of lead (II) nitrate, cadmium nitrate and mercury (II) chloride for 7 days. Then,

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Garrido, I., R. M. Soto, A. Carlosena, P. López-Mahía, S. Muniategui, and D. Prada. "FLAME ATOMIC ABSORPTION SPECTROMETRY WITH FLOW-INJECTION ON-LINE ADSORPTION PRECONCENTRATION USING A KNOTTED REACTOR FOR CADMIUM DETERMINATION IN AQUEOUS SAMPLES." Analytical Letters 34, no. 10 (2001): 1763–79. http://dx.doi.org/10.1081/al-100105359.

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Payehghadr, Mahmood, Sousan Esmaeilpour, Mohammad Kazem Rofouei, and Laleh Adlnasab. "Determination of Trace Amount of Cadmium by Atomic Absorption Spectrometry in Table Salt after Solid Phase Preconcentration Using Octadecyl Silica Membrane Disk Modified by a New Derivative of Pyridine." Journal of Chemistry 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/417085.

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Silica-C18 bonded disk modified by a four-dentate Schiff base has been used for preconcentration of cadmium in table salt samples followed by flame atomic absorption spectrometry. The method is based on the adsorption of Cd on 1,2-bis(pyridin-2-ylmethylene) hydrazine as Schiff base ligand on silica-C18 disk. The effects of several factors such as type and concentration of the eluent, pH of sample solution, amount of ligand, and breakthrough volume have been optimized based on one variable at a time. In optimum conditions (type of eluent, HNO31.0 mol/L; volume of eluent, 5.0 mL; solution pH, 9.

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Karimi, Mohammad, Forouzan Aboufazeli, Hamid Reza Lotfi Zadeh Zhad, Omid Sadeghi, and Ezzatollah Najafi. "A modified nanoporous stir bar for simultaneous determination of Cu(II) and Cd(II) ions in natural samples prior to flame atomic absorption spectroscopy." Polish Journal of Chemical Technology 15, no. 2 (2013): 86–93. http://dx.doi.org/10.2478/pjct-2013-0028.

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In this work, the application of stir bar sorptive extraction (SBSE), as a fast and conventional method, has been investigated for the simultaneous preconcentration and determination of trace amounts of Cd(II) and Cu(II) ions in natural samples. For this purpose, the surface of stir bar was functionalized by amine functionalized nanoporous silica and characterized by IR spectroscopy, X-ray powder diffraction (XRD), Atomic force microscopy (AFM) and N2adsorption. In this approach, after the preconcentration of Cd(II) and Cu(II) ions and removing the matrix interferences using modified stir bar,

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Zhang, Yanlin, and Samuel B. Adeloju. "Coupling of non-selective adsorption with selective elution for novel in-line separation and detection of cadmium by vapour generation atomic absorption spectrometry." Talanta 137 (May 2015): 148–55. http://dx.doi.org/10.1016/j.talanta.2015.01.025.

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Oliveira, Fagner Moreira de, Camila Marchioni, Juan A. V. de A. Barros, Ayla Campos do Lago, Célio Wisniewski, and Pedro Orival Luccas. "Assessment of cadmium and iron adsorption in sediment, employing a flow injection analysis system with on line filtration and detection by flame atomic absorption spectrometry and thermospray flame furnace atomic absorption spectrometry." Analytica Chimica Acta 809 (January 2014): 82–87. http://dx.doi.org/10.1016/j.aca.2013.11.048.

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Ellis, R. A., J. G. Murphy, E. Pattey, R. van Haarlem, J. M. O'Brien, and S. C. Herndon. "Characterizing a Quantum Cascade Tunable Infrared Laser Differential Absorption Spectrometer (QC-TILDAS) for measurements of atmospheric ammonia." Atmospheric Measurement Techniques 3, no. 2 (2010): 397–406. http://dx.doi.org/10.5194/amt-3-397-2010.

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Abstract. A compact, fast-response Quantum Cascade Tunable Infrared Laser Differential Absorption Spectrometer (QC-TILDAS) for measurements of ammonia (NH3) has been evaluated under both laboratory and field conditions. Absorption of radiation from a pulsed, thermoelectrically cooled QC laser occurs at reduced pressure in a 0.5 L multiple pass absorption cell with an effective path length of 76 m. Detection is achieved using a thermoelectrically-cooled Mercury Cadmium Telluride (HgCdTe) infrared detector. A novel sampling inlet was used, consisting of a short, heated, quartz tube with a hydrop

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Ellis, R. A., J. G. Murphy, E. Pattey, R. van Haarlem, J. M. O'Brien, and S. C. Herndon. "Characterizing a Quantum Cascade Tunable Infrared Laser Differential Absorption Spectrometer (QC-TILDAS) for measurements of atmospheric ammonia." Atmospheric Measurement Techniques Discussions 2, no. 6 (2009): 3309–38. http://dx.doi.org/10.5194/amtd-2-3309-2009.

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Abstract. A compact, fast-response Quantum Cascade Tunable Infrared Laser Differential Absorption Spectrometer (QC-TILDAS) for measurements of ammonia has been evaluated under both laboratory and field conditions. Absorption of radiation from a pulsed, thermoelectrically cooled QC laser occurs at reduced pressure in a 0.5 L multiple pass absorption cell with an effective path length of 76 m. Detection is achieved using a thermoelectrically cooled Mercury Cadmium Telluride (HgCdTe) infrared detector. A novel sampling inlet was used, consisting of a short, heated, quartz tube with a hydrophobic

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Hamid, Zeinab Abdel, H. B. Hassan, Manal A. Hassan, M. Hussein Mourad, and S. Anwar. "Deposition, Characterization, Performance of Cadmium Sulfide Quantum Dots Thin Films Using SILAR Technique for Quantum Dot Sensitized Solar Cell Applications." Key Engineering Materials 835 (March 2020): 374–83. http://dx.doi.org/10.4028/www.scientific.net/kem.835.374.

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This work deals with the deposited cadmium sulfide (CdS) quantum dots thin films on transparent conductive fluorine-doped tin oxide (FTO) substrates prepared by successive ionic layer adsorption and reaction technique (SILAR). QD deposition based on SILAR is easy, cheap and effective method which improves the surface quality and performance of QD-based devices. The effect of the number of cycles of SILAR on the morphology and size of the quantum dots has been investigated. SILAR technique was adopted for the deposition of CdS on anatase TiO2 and the three main factors contributing to the perfo

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Mustapha, Moshood Keke, and Joy Chinenye Ewulum. "Seasonal assessment, treatment and removal of heavy metal concentrations in a tropical drinking water reservoir." Ekológia (Bratislava) 35, no. 2 (2016): 103–13. http://dx.doi.org/10.1515/eko-2016-0008.

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AbstractHeavy metals are present in low concentrations in reservoirs, but seasonal anthropogenic activities usually elevate the concentrations to a level that could become a health hazard. The dry season concentrations of cadmium, copper, iron, lead, mercury, nickel and zinc were assessed from three sites for 12 weeks in Oyun reservoir, Offa, Nigeria. Triplicate surface water samples were collected and analysed using atomic absorption spectrophotometry. The trend in the level of concentrations in the three sites is site C > B > A, while the trend in the levels of the concentrations in th

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Baghaie, Amir Hossein, and Mehran Keshavarzi. "The Effect of Montmorillonite Nano-Clay on the Changes in Petroleum Hydrocarbon Degradation and Cd Concentration in Plants Grown in Cd-Polluted Soil." Avicenna Journal of Environmental Health Engineering 5, no. 2 (2018): 100–105. http://dx.doi.org/10.15171/ajehe.2018.13.

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Contamination with heavy metals and petroleum hydrocarbons is considered as an environmental problem. Thus, this research was done to evaluate the effect of montmorillonite nano-clay on the changes in petroleum hydrocarbon degradation and cadmium (Cd) concentration in plant grown in a Cd-polluted soil. Treatments consisted of two levels of montmorillonite nano-clay (0 and 1% W/W) in a Cd-polluted soil (0, 5, 10 mg Cd/kg soil) and crude oil-polluted soil (0, 1 and 2% W/W). The plant used in this study was Tall Fescue (Festuca arundinacea L.). After 20 weeks, the concentration of Cd in plants wa

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Baghaie, Amir Hossein. "Effect of Organic Nano-Materials on Heavy Metals Concentration of Wheat Plants Inoculated With Piriformospora indica Fungus and Irrigated With Wastewater of Plating Industry." Avicenna Journal of Environmental Health Engineering 7, no. 1 (2020): 20–28. http://dx.doi.org/10.34172/ajehe.2020.04.

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Removal of heavy metals from industrial effluents is one of the most important in environmental research. This research was done to investigate the adsorption effect of multiwall carbon nanotubes (MWNTs) and nano Zn-oxide on decreasing chromium (Cr) and cadmium (Cd) concentration in wheat inoculated with Piriformospora indica (P.indica) that irrigated with wastewater of plating industry. Treatments were consist of applying MWCNs (0 and 0.5 % (W/W)) and nano Zn-oxide (0 and 1.5 % (W/W)) in the soil irrigated with the wastewater of plating industry under wheat inoculated with P.indica. This rese

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Trots, N., and Aleksei Pakhomov. "ACCUMULATION OF HEAVY METALS BY PULSE CROPS UNDER THE APPLICATION OF BIOLOGICALLY ACTIVE SUBSTANCES IN THE VOLGA REGION FOREST-STEPPE." Bulletin Samara State Agricultural Academy 5, no. 2 (2020): 3–7. http://dx.doi.org/10.12737/37331.

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The aim of study is reduction of accumulation of heavy metals in agrocenosis of pulse crops due to the action of biologically active substances in the conditions of the middle Volga forest. An experiment study in order to reveal the effect of pre-sowing seed treatment with biologically active substances on the accumulation of heavy metals by soils and plants in agrocenoses of peas and soybeans was conducted in 2013-2015. The results of pre – sowing treatment of soybean seeds of the Samer 3 breed and peas of the Flagman 12 with the Rizotorfin and Rizotorfin in combination with analogues – Agric

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Chen, Wen Bin. "The Study of Bioremediation on Heavy Metal of Cultured Seawater by Sphingomonas sp. XJ2 Immobilized Sphingomonas Strain." Advanced Materials Research 347-353 (October 2011): 1436–41. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.1436.

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In this study, the bacterium was identified as Sphingomonas sp. XJ2 by means of microscopic examination, physiological, biochemical detection, and modern molecular biology technology. After acclimatization for several times, this bacterium has good performance in removing heavy metals and organic matter from seawater. Alginate immobilized cells has obvious holes on the surface and has big specific surface area, which are conducive to the adsorption of metal ions. Hydration heat of Pb2+ is small, and is most likely to drop out of ligand water then become exposed Pb2+; in addition, the ionic rad

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KOJIMA, SHOJI. "Gastrointestinal absorption of cadmium." Eisei kagaku 31, no. 1 (1985): 1–16. http://dx.doi.org/10.1248/jhs1956.31.1.

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Fu, Gongmin, and Herbert E. Allen. "Cadmium adsorption by oxic sediment." Water Research 26, no. 2 (1992): 225–33. http://dx.doi.org/10.1016/0043-1354(92)90222-p.

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Ahmed, Mohd Elmuntasir I. "Cadmium Adsorption on HDTMA Modified Montmorillionite." Journal of Engineering Research [TJER] 6, no. 1 (2009): 8. http://dx.doi.org/10.24200/tjer.vol6iss1pp8-14.

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In this paper the possibility of cadmium removal from aqueous solutions by adsorption onto modified montmorillonite clay is investigated. Batch adsorption experiments performed revealed an enhanced removal of cadmium using HDTMA modified montmorillonite to 100% of its exchange capacity. Modified montmorillonite adsorption capacity increases at higher pHs suggesting adsorption occurs as a result of surface precipitation and HDTMA complex formation due to the fact that the original negatively charged montmorillonite is now covered by a cationic layer of HDTMA. Adsorption isotherms generated foll

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Angove, Michael J., Bruce B. Johnson, and John D. Wells. "Adsorption of cadmium(II) on kaolinite." Colloids and Surfaces A: Physicochemical and Engineering Aspects 126, no. 2-3 (1997): 137–47. http://dx.doi.org/10.1016/s0927-7757(96)03990-8.

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Vasylechko, V. O., G. V. Gryshchouk, Yu B. Kuz'ma, L. O. Lebedynets, and O. Ya Oliyarnyk. "Adsorption of Cadmium on Transcarpathian Clinoptilolite." Adsorption Science & Technology 18, no. 7 (2000): 621–30. http://dx.doi.org/10.1260/0263617001493675.

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