atomic spectrometry Articles
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Slurry sampling electrothermal atomic absorption spectrometric determination of palladium in water using biosorption with inactive baker's yeast Saccharomyces cerevisiae
Inactive cells of yeast Saccharomyces cerevisiae were used for palladium preconcentration. The conditions for biosorption of palladium and its determination in yeast cells by slurry electrothermal atomic absorption spectrometry (ETAAS) were optimised. The best sensitivity of measurements and stability of slurry were obtained by using a mechanical agitation (10 minutes) and a mixture of 0.3 mol ...
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Application of radiochemical neutron activation and atomic absorption spectrometry methods for the study of nutrition-pollution interactions in children
The application of radiochemical neutron activation analysis (RNAA) and atomic absorption spectrometry (AAS) is expected to aid in understanding and evaluating the effects of environmental pollution on the nutritional status of children already exposed to marginal malnutrition. Samples of placenta, of low-weight and control newborns groups, were collected for determination of nutritional elements ...
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Isotope correlations for determining the isotopic composition of plutonium produced in research and power reactors using the experimental data obtained by alpha and mass spectrometry
Correlations have been developed for obtaining the isotopic composition of Pu produced in Indian research (CIRUS, DHRUVA) and power (PHWR) reactors. The experimental data obtained on 238Pu/(239Pu + 240Pu) alpha activity ratio using alpha spectrometry and on 240Pu/239Pu, 241Pu/239Pu, 242Pu/239Pu atom ratios by thermal ionisation mass spectrometry were used for developing isotope ...
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Determination of Cadmium in the Tap Water by Flameless Atomic Absorption Spectrometry
The standard for the allowable concentration of cadmium in tap water has been revised downward from 0.01 mg/L or less to 0.003 mg/L or less according to Japan's "Ministerial Ordinance for Partial Revision of the Ordinance Concerning the Water Quality Standard" (The Ministry of Health, Labour and Welfare Ordinance No.18) (February 17, 2010). The revised standard has been in effect since April 1, ...
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Comparison of atomic absorption and fluorescence spectroscopic methods for the routine determination of urinary arsenic
Objective: Interpretation of urinary arsenic measurements is sometimes difficult because of the absorption of seafood that contains trimethylated arsenic forms (arsenobetaine and arsenocholine). The objective of this study was to develop a rapid and robust technique for the measurement of the sum of inorganic arsenic metabolites. Methods: Measurement of arsenic was performed in urine after ...
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Determination of antimony in bottled water and polyethylene terephthalate bottles: a routine laboratory quality check
The paper describes a modified and optimised conventional wet ashing method for the determination of antimony (Sb) in polyethylene terephthalate (PET) bottles used for bottling sparkling and still water. The modified optimum conventional wet ashing method was applied as the digestion method to extract Sb from PET bottles, and the extracted Sb analysed using flame atomic absorption spectrometry ...
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Human bone as a biological material for environmental monitoring
The effect of age and gender on major, minor and trace element contents in the intact rib-bone of 84 apparently healthy 15?58 year-old citizens (38 females and 46 males) of a non-industrial region in the Central European part of Russia was investigated by Instrumental Neutron Activation Analysis (INAA) and Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The summary of ...
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Measurement of Cesium in Tap Water and Soil by Atomic Absorption Spectrometry
Recently, technologies that can efficiently remove radioactive cesium (chiefly Cs-137) from water and soil have been actively researched. The study and evaluation of these removal technologies can be conducted using Cs-133, an easy-to-handle, stable substance, yet chemically similar to Cs-137. Cesium can be analyzed using atomic absorption spectrometry and ICP emission spectroscopy, which are ...
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Vortex-assisted surfactant-enhanced-emulsification liquid–liquid microextraction with solidification of floating organic droplet combined with flame atomic absorption spectrometry for the fast determination of cadmium in water samples
A novel vortex-assisted surfactant-enhanced-emulsification liquid–liquid microextraction with solidification of floating organic droplet (VSLLME-SFO) was developed for the fast, simple and efficient determination of cadmium (Cd) in water samples followed by flame atomic absorption spectrometry (FAAS). In the VSLLME-SFO process, the addition of surfactant (as an emulsifier), could enhance the ...
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Emission patterns of traffic–related metals and associated contamination in road deposited sediment
Road deposited sediment (RDS) is regarded as sinks for metal pollutants derived from road–traffic that may pose a danger for the nearby water environment. The reported study aims to analyse RDS build–up and associated metal emission patterns using Riccarton Campus of Heriot Watt University, Edinburgh, Scotland as a study site. The RDS samples were collected from four different sites over a four ...
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Speciation of butyltin compounds in marine sediments and sea-shells by HG/GC/QFAAS
After optimisation of sample pretreatment and determination procedures, butyltin compounds were determined in selected marine sediments and biota using the hydride generation/gas chromatography/quartz furnace atomic absorption spectrometry method. Butyltins were detected in all surface sediment samples of Arcachon Bay, though at widely different concentrations (from a few ng g-1 in remote areas ...
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Cloud point extraction–flame atomic absorption spectrometry method for preconcentration and determination of trace cadmium in water samples
A method based on cloud point extraction (CPE) separation/preconcentration of trace cadmium (Cd) as a prior step to its determination by flame atomic absorption spectrometry has been developed. Cadmium reacted with 8-hydroxyquinoline to form hydrophobic chelates, which were extracted into the micelles of nonionic surfactant oligoethylene glycol monoalkyl ether (Genapol X-080) in an alkaline ...
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Spectroscopic study of the interaction of heavy metals with organic acids
The ongoing progress in spectroscopic methods of analysis has resulted in a growing interest in the nature of pollutants and hence the possibility of controlling their levels in the environment. This paper describes a study of the fate of some pollutants in both soil and water at two selected areas in the north of Cairo, Egypt. Samples were collected from Shoubra Elkhima and Kafr ElSheikh during ...
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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
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 ...
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Simultaneous preconcentration of cadmium and chromium(III) in water samples by cloud point extraction and their determination by flame atomic absorption spectrometry
A sensitive and simple method for flame atomic absorption spectrometry determination of traces of cadmium and chromium(III) species in water samples after preconcentration by cloud point extraction has been developed. A novel complex agent of alizarin complexone with cadmium (Cd) and chromium (Cr(III)) was quantitatively extracted in surface primary alcohol ethoxylate-rich phase at 33 ...
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Quantitative relations between different concentrations of micro- and macroelements in mosses and lichens: the region of Opole (Poland) as an environmental interface in between Eastern and Western Europe
We examined the concentration of selected metals: Al, Mn, Fe, Cu, Zn, Cd and Pb, as well as activity of 137Cs in samples of moss and lichen, collected in the area surrounding Bory Stobrawskie, a wood complex situated in southern Poland. The concentration of metals was determined by atomic absorption spectrometry. The activity of 137Cs was determined by gamma spectrometry. We used these results, ...
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Supramolecular solvent-based extraction coupled with vortex-mixing for determination of palladium and silver in water samples by flame atomic absorption spectrometry
A simple and practical extraction method of supramolecular solvents (SUPRAS) was developed for separation and enrichment of trace amounts of palladium (Pd) and silver (Ag) in water samples prior to flame atomic absorption spectrometry (FAAS) analysis. The SUPRAS selected was made up of an aqueous solution containing tetrahydrofuran and nonanoic acid. Pd and Ag reacted with ...
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An overview of recent IAEA projects on mercury in non-marine environments
Nuclear and isotopic techniques are unique tools for studying mercury contamination and cycling in various environments. Therefore, the International Atomic Energy Agency (IAEA) has been supporting the use of nuclear and complementary analytical techniques (mainly neutron activation analysis, inductively coupled plasma – mass spectrometry and atomic absorption spectrometry), and application of ...
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The Development of Atomic Absorption Spectrometry (AAS)
It all began in the 1950s with a pioneering article by Alan Walsh. Today, it is an established standard technology in the field of analytical chemistry: atomic absorption spectrometry (AAS). AAS has experienced amazing development through the decades. In addition to newer ICP technologies, modern AAS systems such as Analytik Jena’s contrAA 800 exist thanks to ongoing technological ...
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ß-adrenergic receptor density and adenylate cyclase activity in lead-exposed rat brain after cessation of lead exposure
To understanding the reversible or irreversible harm to the -adrenergic system in the brain of lead-exposed rats, this study sets up an animal model to estimate the change in the sympathetic nervous system of brain after lead exposure was withdrawn. We address the following topics in this study: (a) the relationship between withdrawal time of lead exposure and brain -adrenergic receptor, blood ...
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