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Journal articles on the topic 'Flame spectrophotometry. Spectrophotometer'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Nomoto, S., and S. Shoji. "Optimized atomic absorption spectrophotometry of calcium in erythrocytes." Clinical Chemistry 33, no. 11 (1987): 2004–7. http://dx.doi.org/10.1093/clinchem/33.11.2004.

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Abstract We sought to establish optimum conditions for measuring calcium in erythrocytes by atomic absorption spectrophotometry. The conditions we selected are as follows. Wash one volume of fresh heparin-treated packed cells once with 30 volumes of isotonic buffered saline (pH 7.4) at a temperature somewhat exceeding 25 degrees C. Dilute the washed packed cells 10-fold with 12 mmol/L hydrochloric acid, and analyze the supernate for calcium. Measure the hematocrit of the washed packed cells, then analyze an aliquot of them for calcium, using a computer-readout type of flame or a non-flame atom

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2

Khudhair, Ahmed Fadhil, Mouyed Khudhair Hassan, Hasan F. Alesary, and Ahmed S. Abbas. "A Simple Pre-concentration Method for the Determination of Nickel(II) in Urine Samples Using UV-Vis Spectrophotometry and Flame Atomic Absorption Spectrometry Techniques." Indonesian Journal of Chemistry 19, no. 3 (2019): 638. http://dx.doi.org/10.22146/ijc.35681.

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The cloud point technique was effectively utilized for extraction and pre-concentration of nickel(II) in urine samples before measurement by UV-Vis spectrophotometer and AAS techniques. The metal response to a para-aminophenol (PAP) reagent in a non-ionic surfactant Triton X-114 medium was to form the Ni-PAP complex. The adopted concentration for PAP, concentration of Triton X-114, pH effect and water bath temperature, incubation time, salt effect, and interference effects were all optimized. The calibration curve was linear over the range of (0.0625–1.25) mg L–1 with a correlation coefficient

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3

Putri, Ida A. R., Fatimawali Fatimawali, and Henki Rotinsulu. "ANALISIS BORAKS PADA ABU KOPRA DI KABUPATEN MINAHASA DAN MINAHASA SELATAN." PHARMACON 8, no. 2 (2019): 284. http://dx.doi.org/10.35799/pha.8.2019.29293.

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ABSTRACTBorax is one of the dangerous substances and is prohibited from being used in food products. Borax is chemical compound called sodium tetraborate (NaB4O7 ⁻10 H2O). Borax or Borax acid is usually used for making detergents and antiseptic and its use in food product, can cause a various health problems. The purpose of this study was to determine the presence and levels of Borax found in copra ash in Tateli and Lelema villages. The method which used in this study was the flame Color Test method, Tumeric Paper and UV-Vis Spectrophotometer. The results obtained that the two samples identifi

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4

Busch, Marianna A., and Kenneth W. Busch. "Signal-to-Noise Comparison of Flame/Furnace Infrared Emission (FIRE) Spectrometry with Room-Temperature, Nondispersive Infrared Absorption Spectrophotometry." Applied Spectroscopy 47, no. 7 (1993): 912–21. http://dx.doi.org/10.1366/0003702934415138.

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A theoretical model has been developed for the comparison of the performance of a detector-noise-limited, flame infrared emission (FIRE) spectrometer with that of a room-temperature, nondispersive, infrared absorption (NDIR) spectrophotometer. The ratio of the signal-to-noise ratio (SNR) in emission to that in absorption is found to depend on the product of five terms: (1) the ratio of the noise in absorption to that in emission; (2) the ratio of the solid angles in emission and absorption; (3) the ratio of the pathlengths in emission and absorption; (4) the ratio of the number densities in em

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5

Patel, S. R., and K. K. Desai. "Studies on Some Physico-Chemical and Microbiological Characteristics of Potable Water Used in Some Rural Areas of Surat District (Gujarat)." E-Journal of Chemistry 2, no. 2 (2005): 113–20. http://dx.doi.org/10.1155/2005/187453.

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A physico chemical and microbiological study of the ground water of some villages of Surat district of Gujarat state (India) has been made. Physico chemical parameters such as colour, odour, taste, temperature, pH, electrical conductivity, TS, TDS, total hardness, total alkalinity, calcium, magnesium, iron, sodium, potassium, chloride, sulphate, nitrate, fluoride and silica were determined. In microbiological study, total coliforms, E. coli, sulfate reducing anaerobic bacteria, pseudomonas aeruginosa, yeast and mould were investigated. Samples were taken from ten sampling points in ten differe

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6

Parker, Robert D. "Atomic Absorption Spectrophotometric Method for Determination of Polydimethylsiloxane Residues in Pineapple Juice: Collaborative Study." Journal of AOAC INTERNATIONAL 73, no. 5 (1990): 721–23. http://dx.doi.org/10.1093/jaoac/73.5.721.

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Abstract An atomic absorption spectrophotometric method for determination of polydimethylsiloxane (PDMS) residues In pineapple juice was collaboratively studied by 9 laboratories. PDMS residues are extracted from pineapple Juice with 4- methyl-2-pentanone and the extracted silicone Is measured by atomic absorption spectrophotometry using a nitrous oxide/ acetylene flame. Collaborators analyzed 5 samples Including 1 blind duplicate. Reproducibility relative standard deviations (RSDR) were 13.1% at 31 ppm, 6.9% at 18 ppm, 14.8% at 7.9 ppm, and 16.1 % at 4.9 ppm PDMS. The method has been approved

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7

TANAKA, Satoko, and Kenji CHAYAMA. "Determination of Minerals in Commercial Tofu by Atomic Absorption Spectrophotometry and Flame Spectrophotometry." BUNSEKI KAGAKU 55, no. 1 (2006): 55–59. http://dx.doi.org/10.2116/bunsekikagaku.55.55.

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8

Kasa, Nursu Aylin, Buse Tuğba Zaman, and Sezgin Bakırdere. "Ultra-trace cadmium determination in eucalyptus and rosemary tea samples using a novel method: deep eutectic solvent based magnetic nanofluid liquid phase microextraction-slotted quartz tube-flame atomic absorption spectrometry." Journal of Analytical Atomic Spectrometry 35, no. 11 (2020): 2565–72. http://dx.doi.org/10.1039/d0ja00276c.

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A deep eutectic solvent-based magnetic nanofluid liquid phase microextraction method was developed for the preconcentration of cadmium prior to its determination using the slotted quartz tube flame atomic absorption spectrophotometry system.

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9

Tyson, Julian. "Flow injection techniques for flame atomic absorption spectrophotometry." TrAC Trends in Analytical Chemistry 4, no. 5 (1985): 124–28. http://dx.doi.org/10.1016/0165-9936(85)87012-6.

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10

Cavallini, Nubya Gonçalves, Rorigo Arantes Reis, Juliana Quadros, Andrea Oliveira, Mariana Gallucci Nazário, and Liliani Marilia Tiepolo. "Determination of Lead (Pb) in stools of Lontra longicaudis (Olfers, 1818) by flame atomic absorption spectrometry (FAAS)." Eclética Química Journal 43, no. 1SI (2018): 70. http://dx.doi.org/10.26850/1678-4618eqj.v43.1si.2018.p70-78.

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The determination of metallic elements by flame atomic absorption spectrophotometry reaffirms the success of the technique for ecological and toxicological studies of environmental contamination. In order to contribute to the scientific research on anthropogenic contamination, the study of Lead in stools of Lontra longicaudis (Olfers, 1818) in the Guaraguaçu River Basin aims to understand the anthropogenic environmental contamination of the local ecosystem, located in one of the largest port areas in Brazil. Six samples were collected along the Guaraguaçu River. To determine the Lead concentra

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11

Tekin, Zeynep, Tülay Borahan, Nizamettin Özdoğan, and Sezgin Bakırdere. "Peristaltic pump-assisted zirconium nanoparticle-based pipette-tip solid phase extraction for the determination of cobalt by slotted quartz tube-flame atomic absorption spectrophotometry." Analytical Methods 12, no. 9 (2020): 1244–49. http://dx.doi.org/10.1039/c9ay02762a.

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In this work, a novel, efficient, simple and green solid phase extraction method based on a pipette tip filled with zirconium nanoparticles was developed for the sensitive determination of cobalt in soil samples via slotted quartz tube-flame atomic absorption spectrophotometry.

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12

Stauffer, Mark T., Leland J. Hunter, and Steven K. Troncone. "Determination of Iron in Abandoned Mine Drainage by UV‐Vis Spectrophotometry and Flame Atomic Absorption Spectrophotometry." Spectroscopy Letters 40, no. 3 (2007): 429–37. http://dx.doi.org/10.1080/00387010701293583.

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13

Saud, Ali M., Mikhail A. Smagin, and Vera I. Vasil’eva. "Features of sodium determination in dilute mixed solutions with phenylalanine by flame photometry." Industrial laboratory. Diagnostics of materials 86, no. 1 (2020): 13–18. http://dx.doi.org/10.26896/1028-6861-2020-86-1-13-18.

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Flame spectrophotometry is one of the main methods for determining alkali and alkaline earth metals in solutions. Chemical analysis by the flame photometric method have become of great importance for estimation of trace elements content and for work on small quantities of sample. The most important disadvantages of flame spectrophotometry are different types of interference (spectral, chemical, and physical). The paper considers mainly the physical interference which directly relates to the state of the sample itself and includes solution temperature, viscosity, surface tension, and vapor pres

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14

Markovic, Jelena, and Svetlana Stevovic. "Environmental Soil Quality Research as Prediction for Sustainable Orchards Cultivation in Southern Serbia." Journal of Agricultural Science 8, no. 2 (2016): 151. http://dx.doi.org/10.5539/jas.v8n2p151.

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<p>Soil quality is one of the main environmental conditions for successful and sustainable orchards cultivation. The main role of the soil is reflected in its production activities or productivity. Soil fertility implies content available nutrients, such as individual elements, pH and humus. The research of soil quality leads to certain conclusions about which soil is suitable for growing crops. The investigation of soil quality for Pcinja District in southern Serbia is performed, with the goal to complete environmental conditions for cultivation of the most suitable crops. The methods t

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15

Zhilyaev, B. E., M. V. Andreev, A. V. Sergeev, V. N. Reshetnik, and N. A. Parakhin. "Fast spectrophotometry of the flare star EV lacertae." Astronomy Letters 38, no. 12 (2012): 793–800. http://dx.doi.org/10.1134/s1063773712120079.

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16

Zhang, Dong, and Yan Li Zhang. "Study on the Adsorption Capability of Nano-Barium-Strontium Titanate Immobilized on Aluminum Oxide for Zinc Ion." Advanced Materials Research 279 (July 2011): 147–50. http://dx.doi.org/10.4028/www.scientific.net/amr.279.147.

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Zinc ion was adsorbed and enriched by nano-barium-strontium titanate immobilized on aluminum oxide(ABST). The adsorption and elution conditions were investigated. The results showed that ABST had strong adsorption ability for zinc ion in water in the medium at pH more than 4.0. The maximum adsorption capability was up to 16.38 mg/g. The adsorbed zinc on ABST could be eluted and reclaimed with 0.5 mol/L of HNO3. Zinc was determined by flame atomic absorption spectrophotometry (FAAS). The detection limit of this method for zinc ion was 2.5 μg/L. The method had been applied to the determination o

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17

刘, 庆. "Flame Atomic Absorption Spectrophotometry to Detect Metal Elements Method Verification." Advances in Material Chemistry 08, no. 04 (2020): 63–69. http://dx.doi.org/10.12677/amc.2020.84008.

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18

Macintyre, I. "The determination of calcium in biological fluids by flame spectrophotometry." Recueil des Travaux Chimiques des Pays-Bas 74, no. 4 (2010): 498–501. http://dx.doi.org/10.1002/recl.19550740412.

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19

Fu, Yuhong, Quan Wan, Zonghua Qin, et al. "Concentration determination of gold nanoparticles by flame atomic absorption spectrophotometry." Acta Geochimica 40, no. 4 (2021): 498–506. http://dx.doi.org/10.1007/s11631-021-00486-y.

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20

Niemczyk, Thomas M., and Daniel C. Espinosa. "Evaluation of a Glass Frit Nebulizer for Use in Atomic Absorption Spectrophotometry." Applied Spectroscopy 41, no. 1 (1987): 26–31. http://dx.doi.org/10.1366/0003702874867891.

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A glass frit nebulizer has been designed and constructed specifically for use in flame atomic absorption spectroscopy. Its performance has been compared with that of conventional nebulizers using normal flame conditions. The performance level depends strongly on the pore size of the glass frit used. A fine frit is capable of operation at efficiencies close to 100% for low solution introduction rates. The noise level of the absorption signal when the fine glass frit was used was considerably less than that measured for the conventional nebulizer. The use of glass frits with larger pore sizes do

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21

Ikhsani, Idha Yulia, Eki Naidania Dida, and Sri Yudawati Cahyarini. "EVALUATION OF THE USE OF FAAS FOR SR/CA CONCENTRATION ANALYSIS OF PORITES FROM AMBON BAY AND JUKUNG ISLAND CORAL." Jurnal Ilmu dan Teknologi Kelautan Tropis 9, no. 1 (2017): 247–53. http://dx.doi.org/10.29244/jitkt.v9i1.17939.

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The ratio of Sr/Ca concentration in coral is usually used as paleothermometer. Inductively Coupled Plasma (ICP) is an instrument, which is often used to analyze Sr/Ca concentration in Porites sp. The method is very sensitive and requires small amount of sample. However, the availability of this instrument is very limited. To deal with it, Flame Atomic Adsorption Spectrophotometer (FAAS) is an alternative in order to analyze the concentration of various elements include Sr and Ca. The aim of this study was to evaluate the result of the analysis methods of strontium and calcium concentration in

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22

Farré, Rosaura, M. Jesús Lagarda, and Rosa Montoro. "Atomic Absorption Spectrophotometnc Determination of Chromium in Foods." Journal of AOAC INTERNATIONAL 69, no. 5 (1986): 876–79. http://dx.doi.org/10.1093/jaoac/69.5.876.

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Abstract A method is reported for determination of chromium in foodstuffs. Organic matter is digested with nitric acid, followed by oxidation to Cr(VI) and extraction with methyl isobutyl ketone (MIBK) after HC1 addition. Chromium determinations are performed by flame absorption spectroscopy. Absence of interferences is verified and recovery tests are performed on food samples. Quantitation limit (3.8 ng/mL), accuracy (NBS Standard Reference Material 1573 Tomato Leaves, 4500 ± 500 ng/g, found 3860 ± 409 ng/g), and precision (CV for vegetable matrix = 9.05%, CV for animal matrix = 14.95%) of th

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23

Kumchompoo, Jaturon, Wasinee Wongwai, and Ratchadaporn Puntharod. "Microwave-Assisted Preparation of Sodium Silicate as Biodiesel Catalyst from Rice Husk Ash." Key Engineering Materials 751 (August 2017): 461–66. http://dx.doi.org/10.4028/www.scientific.net/kem.751.461.

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In this research, sodium silicate (Na2SiO3) was prepared by rice husk ash reacted with 10 M sodium hydroxide. The mixtures were heated by microwave at 400, 600, and 800 watt for 5 and 10 minutes. The formation of sodium silicate was characterized by Fourier transform infrared spectrophotometer. The vibrations of (Na)O–Si–O(Na) and O–Si–O were observed at 595 and 1023-986 cm-1, respectively, except at 800 watt disappeared those vibrations. The results of flame atomic absorption spectrophotometer provided the mole ratio of sodium and silicon was 2:1 as heating the product at 600 watt for 5 and 1

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24

Li, Jiawei, Wei Tong, and Lingmin Yi. "Flame-retardant composite coatings for cotton fabrics fabricated by using oxygen plasma-induced polymerization of vinyl phosphonic acid/cyclotetrasiloxane." Textile Research Journal 89, no. 23-24 (2019): 5053–66. http://dx.doi.org/10.1177/0040517519848158.

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Environment-friendly flame-retardant cotton textiles have been receiving considerable interest both in academic and industrial circles for years. Herein, a novel flame-retardant coating for cotton fabrics was reported based on vinyl phosphonic acid and 1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane through an O2 plasma-induced polymerization process. The coating on cotton fabrics was confirmed by Fourier transform infrared spectrophotometry, scanning electron microscopy and energy dispersive X-ray spectrometry. Excellent flame retardancy and thermal stability properties were found fr

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25

Cowell, D. C., and P. M. McGrady. "Direct-measurement ion-selective electrodes: analytical error in hyponatremia." Clinical Chemistry 31, no. 12 (1985): 2009–12. http://dx.doi.org/10.1093/clinchem/31.12.2009.

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Abstract Using two commercial direct ion-selective-electrode sodium and potassium analyzers, we found lower sodium values in cases of hyponatremia as compared with those by flame emission spectrophotometry or indirect ion-selective-electrode analyzers. It is shown that these errors can be eliminated by modifying the calibrant, and that there is a requirement for internationally agreed-upon reference standards for use by manufacturers and laboratory personnel to assess analytical performance of these analyzers.

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26

M. R. Khan, A. M. N. Darwaish, and U. Tahir. "Sodium, Potassium, Iron, Calcium and Phosphorus Content of Some Pakistani Condiments." Scientific Inquiry and Review 2, no. 1 (2018): 16–22. http://dx.doi.org/10.32350/sir/21/020103.

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Macro-inorganic elements such as sodium, potassium, iron calcium and phosphorus were determined in condiments popularly used for preparation of routine meals in Pakistan by applying techniques like flame photometry, spectrophotometry and volumetric analysis. The largest amount of sodium and potassium was found to be present in medicago, while cinnamin leaves exhibited the smallest amount. Black pepper was found rich in iron and medicago was found rich in calcium. High phosphorus content was exhibited by parsley.

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27

Barbera, Reyes, Rosaura Farre, and Rosa Montoro. "Atomic Absorption Spectrophotometric Determination of Cobalt in Foods." Journal of AOAC INTERNATIONAL 68, no. 3 (1985): 511–13. http://dx.doi.org/10.1093/jaoac/68.3.511.

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Abstract A method is described for the determination of cobalt in foods. After wet digestion, iron in the sample is removed by liquid-liquid extraction, and cobalt is isolated and extracted. Final determination is done by flame atomic absorption spectrophotometry. Analysis of NBS reference materials by this procedure gives results in close agreement with certified values. The limit of quantitation is 4.3 ng/mL. Recovery studies and analysis of standard materials show that this method is reliable.

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28

Todorovic, Marija, Ivanka Holclajtner-Antunovic, Verica Milicevic, and Randjel Mihajlovic. "Contribution to a study of organic solvent addition on trace determination by FAAS." Journal of the Serbian Chemical Society 65, no. 5-6 (2000): 315–22. http://dx.doi.org/10.2298/jsc0006315t.

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The influence of the presence of an organic solvent on the determination of trace elements by flame atomic absorption spectrophotometry (FAAS) was investigated under different experimental conditions. The obtained results show that the effect of organic solvents on the signal intensities depends not only on the physical properties of the solution but on the analyte properties too. The extent of the effect is also very dependent on the construction of the nebulization system as well as on the stoichiometric flame composition. These facts indicate the very complex mechanism of the effect and dem

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29

Perry, Dana F. "Flame Atomic Absorption Spectrometric Determination of Serum Zinc: Collaborative Study." Journal of AOAC INTERNATIONAL 73, no. 4 (1990): 619–21. http://dx.doi.org/10.1093/jaoac/73.4.619.

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Abstract A method for determining serum zinc concentrations was collaboratively studied by 9 laboratories. Serum samples In polypropylene tubes are directly diluted with 0.03% Brij 35, and zinc is determined by flame atomic absorption spectrophotometry (AAS). A certified standard reference material serves as an external control. Repeatability relative standard deviations (RSDr) were 1.2 and 11.4% and reproducibility relative standard deviations (RSDR) were 6.1 and 12.9% for serum zinc concentrations of 6.36 and 0.63 μg/mL, respectively. The method has been approved Interim official first actio

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30

Şükrü, Kalaycı. "Determination of calcium in the tooth structure by using flame emission spectrophotometer." Journal of Clinical Advances in Dentistry 4, no. 1 (2020): 017–18. http://dx.doi.org/10.29328/journal.jcad.1001018.

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31

Koropchak, John A., and Lori Allen. "Flow-injection Donnan dialysis preconcentration of cations for flame atomic absorption spectrophotometry." Analytical Chemistry 61, no. 13 (1989): 1410–14. http://dx.doi.org/10.1021/ac00188a021.

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32

Yawar, W. "Determination of wear metals in lubricating oils by flame atomic absorption spectrophotometry." Journal of Analytical Chemistry 65, no. 5 (2010): 489–91. http://dx.doi.org/10.1134/s1061934810050096.

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33

Yang, Tian Hua, Wan Li Xing, Xing Ping Kai, Run Dong Li, and Ye Guang He. "The Influence of Chlorine on the Migration Behavior of Alkali Metal during Biomass and Coal Co-Combustion." Applied Mechanics and Materials 40-41 (November 2010): 335–38. http://dx.doi.org/10.4028/www.scientific.net/amm.40-41.335.

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Rice straw and Tiefa coal were used as experimental materials. Under the conditions of different temperatures and Cl/K molar ratio, the experiment was performed by using co-firing devices and ion measure instruments (flame photometer and a visible spectrophotometer). The results reveal that the majority of alkali metals and chlorine are released to gas phase by the precipitation of alkali chloride and HCl(g) above 700°C. Alkali metals release increase with the raising of chlorine content in raw materials. Alkali metals release related to sulfur, silicon and aluminum etc.

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Shao, Shuang Xi, Lan Jiang, Ya Li, and Kai Qi Shi. "Effect of pH on the Phosphorous Components in Tetra-Hydroxymethyl Phosphonium Chloride Solution." Advanced Materials Research 560-561 (August 2012): 237–41. http://dx.doi.org/10.4028/www.scientific.net/amr.560-561.237.

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At present, tetra-hydroxymethyl phosphonium chloride (THPC) is widely used in flame retardant finishing, industrial water treatment and leather manufacture industry etc., and its decomposition which was caused by pH changing will influence on the actual application. So acid-alkali decomposition of THPC was studied by 31P Nuclear Magnetism Resomance (31P NMR), spectrophotometry and titration respectively. The results show that THPC solution is stable when pH9.0, all of the phosphorus compounds converts to TrHPO. Consequently, THPC content decreases when pH of the THPC solution rising, which cou

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35

Loyd, R. O. Parke, Kevin France, and Allison Youngblood. "Ultraviolet spectrophotometry of flares on “quiescent” M and K dwarf exoplanet hosts." Proceedings of the International Astronomical Union 11, S320 (2015): 161–63. http://dx.doi.org/10.1017/s1743921315010716.

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AbstractWe present an analysis of a sample of flares on “quiescent” (i.e. non-flare) M and K stars using temporally resolved UV spectroscopy from the growing body of MUSCLES Treasury Survey data. Specifically, our analysis quantified the response of the far-UV C II, Si III, Si IV, and N V emission lines and the far-UV continuum during the flares. Using these tracers, we examined one representative event on GJ 832. In concordance with flares recorded on the Sun and AD Leo, the MUSCLES flares are well fit by a power law relationship of similar slope in frequency versus energy. Flares can strip a

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36

Mohiuddin, KM, Md Mehediul Alam, Md Taufique Arefin, and Istiaq Ahmed. "Assessment of nutritional composition and heavy metal content in some edible mushroom varieties collected from different areas of Bangladesh." Asian Journal of Medical and Biological Research 1, no. 3 (2016): 495–501. http://dx.doi.org/10.3329/ajmbr.v1i3.26468.

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Four edible mushroom species (Pleurotus ostreatus, Agaricus bisporus, Volvariella volvacea, Ganoderma lucidum) from different locations of Bangladesh, were analysed for their protein and metal content profile (K, Na, Fe, Cu, Zn, Mn, Cr, Pb, As and Cd). Trace metals were determined by atomic absorption spectrophotometer, Na and K by flame emission spectrophotometer and protein by micro Kjeldhal method. All element concentrations were determined on a dry weight basis. The protein content of mushrooms varied from 13.8%34.3% and the metal content of samples ranged from 0.542.25% for K and 12.68

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37

Saputri, Muharni, Urip Harahap, and Muchlisyam Muchlisyam. "ANALYSIS OF TRENDS OF HYPERTENSIONS RELATING TO THE LEAVES AND CALCULATIONS IN BLOOD IN EMPLOYEE AND RECOVERY: CASE STUDY IN PLACE OF FINAL DISPOSAL (FD) MEDAN - MARELAN." Asian Journal of Pharmaceutical and Clinical Research 11, no. 2 (2018): 210. http://dx.doi.org/10.22159/ajpcr.2018.v11i2.22360.

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Objective: The aim of this study was to determine the relationship between lead and calcium to hypertension.Methods: This study uses causal comparative cross-sectional study, which subjects of study as many as 31 people consisting of 10 people in Group I (employees of final disposal [FD]), 17 people in Group II (scavengers who move in FD), and 4 people in Group III (control). Confounding variables in this study are the working period, age, and body mass index. Determining calcium content performed acetylene flame atomic absorption spectrophotometry-air while the lead is done by atomic absorpti

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38

Tvrdá, Eva, Norbert Lukáč, Monika Schneidgenová, et al. "Impact of Seminal Chemical Elements on the Oxidative Balance in Bovine Seminal Plasma and Spermatozoa." Journal of Veterinary Medicine 2013 (September 9, 2013): 1–8. http://dx.doi.org/10.1155/2013/125096.

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Mutual relationships between selected chemical elements (Na, K, Fe, Cu, Mg, and Zn), basic motility characteristics (motility and progressive motility), and markers of the oxidative balance (superoxide dismutase, catalase, glutathione, albumin, and malondialdehyde) were investigated in bovine seminal plasma and spermatozoa. Computer assisted sperm analysis was used to assess the motility parameters; mineral concentrations were determined by the voltammetric method and flame absorption spectrophotometry; antioxidants and malondialdehyde were evaluated by UV/VIS spectrophotometry. Concentrations

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39

Blitz, Jonathan P., Daniel J. Sheeran, and Thomas L. Becker. "An Improved Flame Test for Qualitative Analysis Using a Multichannel UV–Visible Spectrophotometer." Journal of Chemical Education 83, no. 2 (2006): 277. http://dx.doi.org/10.1021/ed083p277.

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40

马, 密霞. "The Element Determination of Rice with Microwave Digestion and Flame Atomic Absorption Spectrophotometry." Journal of Microwave Chemistry 01, no. 01 (2017): 34–38. http://dx.doi.org/10.12677/mc.2017.11007.

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41

Pookmanee, Pusit, Hathaithip Ninsonti, Supaporn Sangsrichan, Wiyong Kangwansupamonkon, and Sukon Phanichphant. "Photocatalytic Degradation of Geosmin by Titanium Dioxide Powder Synthesized by the Hydrothermal Route." Advanced Materials Research 93-94 (January 2010): 161–64. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.161.

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Titanium dioxide powder was synthesized by the hydrothermal route with the starting precursors as titanium isopropoxide, ammonium hydroxide and nitric acid. The final of pH value of mixed solution was 1 and treated in the hydrothermal PTFE vessel at 80-100 °C for 3h. The phase of titanium dioxide was characterized by X-ray diffractometer (XRD). The morphology of titanium dioxide was investigated by scanning electron microscope (SEM). The chemical composition of titanium dioxide was examined by energy dispersive X-ray spectrophotometer (EDXS). The photocatalytic degradation of geosmin by titani

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Garbarino, J. R., B. E. Jones, G. P. Stein, W. T. Belser, and H. E. Taylor. "Statistical Evaluation of an Inductively Coupled Plasma Atomic Emission Spectrometric Method for Routine Water Quality Testing." Applied Spectroscopy 39, no. 3 (1985): 535–41. http://dx.doi.org/10.1366/0003702854248458.

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In an interlaboratory test, inductively coupled plasma atomic emission spectrometry (ICP-AES) was compared with flame atomic absorption spectrometry and molecular absorption spectrophotometry for the determination of 17 major and trace elements in 100 filtered natural water samples. No unacceptable biases were detected. The analysis precision of ICP-AES was found to be equal to or better than alternative methods. Known-addition recovery experiments demonstrated that the ICP-AES determinations are accurate to between ±2 and ±10 percent; four-fifths of the tests yielded average recoveries of 95–

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Surdu, Lilioara, Maria Daniela Stelescu, Elena Manaila, et al. "The Improvement of the Resistance toCandida albicansandTrichophyton interdigitaleof Some Woven Fabrics Based on Cotton." Bioinorganic Chemistry and Applications 2014 (2014): 1–16. http://dx.doi.org/10.1155/2014/763269.

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This paper presents the improvement of the antimicrobial character of woven fabrics based on cotton. The woven fabrics were cleaned in oxygen plasma and treated by padding with silver chloride and titanium dioxide particles. The existence of silver and titanium on woven fabrics was evidenced by electronic microscope images (SEM, EDAX) and by flame atomic absorption spectrophotometry. The antimicrobial tests were performed with two fungi:Candida albicansandTrichophyton interdigitale. The obtained antimicrobial effect was considerably higher compared to the raw fabrics. Treatment of dyed fabrics

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Milne, D. B., N. V. Ralston, and J. C. Wallwork. "Zinc content of cellular components of blood: methods for cell separation and analysis evaluated." Clinical Chemistry 31, no. 1 (1985): 65–69. http://dx.doi.org/10.1093/clinchem/31.1.65.

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Abstract Platelets, mononucleated cells, polymorphonucleated cells, and erythrocytes were separated from whole blood by use of discontinuous gradients of colloidal polyvinylpyrrolidone-coated silica ("Percoll"). We measured the zinc content of these cells by flame atomic absorption spectrophotometry, using a modified technique for micro-samples that obviated matrix interferences. Thus, results obtained by conventional flame atomic absorption and by the micro-method were identical. Inter-comparisons of separation methods indicated that separation of platelets and mononucleated cells by a two-gr

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Singh, Mahavir, Poonam Yadav, V. K. Garg, Anshu Sharma, Balvinder Singh, and Himanshu Sharma. "Quantification of minerals and trace elements in raw caprine milk using flame atomic absorption spectrophotometry and flame photometry." Journal of Food Science and Technology 52, no. 8 (2014): 5299–304. http://dx.doi.org/10.1007/s13197-014-1538-9.

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Ikhsani, Idha Yulia, Eki Naidania Dida, and Sri Yudawati Cahyarini. "EVALUATION OF THE USE OF FAAS FOR SR/CA CONCENTRATION ANALYSIS OF PORITES FROM AMBON BAY AND JUKUNG ISLAND CORAL." Jurnal Ilmu dan Teknologi Kelautan Tropis 9, no. 1 (2017): 247. http://dx.doi.org/10.28930/jitkt.v9i1.17939.

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<p><em>The ratio of Sr/Ca concentration in coral is usually used as paleothermometer. Inductively Coupled Plasma </em>(ICP)<em> is an instrument, which is often used to analyze Sr/Ca concentration in Porites sp. The method is very sensitive and requires small amount of sample. However, the availability of this instrument is very limited. To deal with it, Flame Atomic Adsorption Spectrophotometer </em>(FAAS)<em> is an alternative in order to analyze the concentration of various elements include Sr and Ca. The aim of this study was to evaluate the result of th

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Zhang, Yong, Jing Xia Chen, Jun Qiu Zhang, and Ying Te Wang. "Spatial Distribution and Sources of Heavy Metal Pollution of Surface Dust in Taiyuan, China." Applied Mechanics and Materials 737 (March 2015): 503–7. http://dx.doi.org/10.4028/www.scientific.net/amm.737.503.

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The concentrations of heavy metals (Cr, Cu, Ni, Pb and Mn) were determined using flame atomic absorption spectrophotometer after digested with four acids. The samples were collected from seven kinds of different functional areas in Taiyuan, China. The concentration of the heavy metals were found in Taiyuan is higher than the soil background values in Shanxi Province, which appeared different levels of accumulation. High concentrations of Cr, Ni, Mn were found in the samples from industrial area and Cu was noted from economic development area. The correlational analysis and principle component

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Yildiz, Y. "Aluminum Determination for Tri-calcium Phosphate (TCP) Anhydrous Powder by Flame Atomic Absorption Spectrophotometer." Science Journal of Analytical Chemistry 4, no. 3 (2016): 22. http://dx.doi.org/10.11648/j.sjac.20160403.11.

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Supong, Kanokporn, and Parnuwat Usapein. "Reliable determination of copper complex ions in synthetic wastewater using flame atomic absorption spectrophotometry." Water Science and Technology 79, no. 5 (2019): 833–41. http://dx.doi.org/10.2166/wst.2019.072.

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Abstract Forms of copper that are highly soluble in aquatic environments are used as chemical reagents in a variety of industries, especially copper complexes. Wastewater containing copper complexes can be difficult to treat and analyse. Normally, flame atomic absorption spectrophotometry (FAAS) is a favourable technique for analysing metal ions in wastewater, but is less reliable for copper analysis owing to the influence of copper oxides. To solve this problem, it is necessary to adjust the atomization and delay times. The objective of this study was to use FAAS to accurately determine the q

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马, 密霞. "The Element Determination of Dark Tea with Microwave Digestion and Flame Atomic Absorption Spectrophotometry." Journal of Microwave Chemistry 01, no. 01 (2017): 22–27. http://dx.doi.org/10.12677/mc.2017.11005.

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