Topic
Atomic absorption spectroscopy
About: Atomic absorption spectroscopy is a research topic. Over the lifetime, 8567 publications have been published within this topic receiving 165247 citations. The topic is also known as: AAS.
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TL;DR: A rapid and accurate atomic absorption method for the determination of chromium in faeces samples from pasture experiments using chromic oxide "markers" is described in this article, where the effects of these interferences were overcome by adding calcium to the test solution and by the addition of silicate to the standards, which were prepared in ‘blank’ solutions.
Abstract: A rapid and accurate atomic absorption method for the determination of chromium in faeces samples from pasture experiments using chromic oxide ‘markers’ is described. Of the elements present after ashing and digesting the samples in a phosphoric acid—manganese sulphate—potassium bromate solution silicate, aluminium, calcium and magnesium were found to interfere in the determination. The effects of these interferences were overcome by the addition of calcium to the test solution and by the addition of silicate to the standards, which were prepared in ‘blank’ solutions.The sensitivities of a number of alternate chromium resonance lines relative to that of Cr 3578·7 A. are given. These lines may be used to increase the concentration range of the analysis.The results of a comparison of the atomic absorption method with a chemical method are given.
1,848 citations
Book•
01 Jan 1985
TL;DR: In this paper, the authors present a survey of the application of atomic absorption spectrometers in a wide range of applications, including radiation sources, atomizers, and measurement and readout.
Abstract: Introduction Radiation Sources Atomizers Optics Analytical Measure and Readout Methods, Nomenclature and Techniques Interferences in Atomic Absorption Spectrometry The Techniques of Atomic Absorption Spectrometry Related Analytical Methods The Individual Elements Specific Applications Bibliography.
1,413 citations
TL;DR: In this paper, an extremely sensitive and accurate method for the detn. of Hg down to 1.0 ppb has been described and applied to Ni and Co metal as well as rock samples and soil samples contg. materials.
Abstract: The procedure outlined describes an extremely sensitive and accurate method for the detn. of Hg down to 1.0 ppb. in soln. This procedure has been applied to Ni and Co metal as well as rock samples and soil samples contg. org. materials. The sample is taken into soln. by an oxidizing acid attack. Hg is then reduced to the elemental state and aerated from soln. in a closed system. The Hg vapor passes through a quartz absorption cell of an at. absorption spectrophotometer where its concn. is measured. The proceure is free from interferences due to org. matter or other volatile constituents of the sam ple. Large amts. of easily reducible elements must be absent from -- AATA
1,122 citations
TL;DR: In this paper, a dithiocarbamate extraction method coupled with atomic absorption spectrometry and electrothermal atomization is described which is essentially 100% quantitative for each of the four metals studied.
747 citations
TL;DR: In this article, the concentration of 25 elements in fly ash emitted from a coal-fired power plant were measured as a function of particle size using spark source mass spectroscopy, optical emission spectrography, atomic absorption spectrum analysis (AASSA), and x-ray fluorescence analysis.
Abstract: Concentrations of 25 elements in fly ash emitted from a coal-fired power plant were measured as a function of particle size using spark source mass spectroscopy, optical emission spectrography, atomic absorption spectroscopy, and x-ray fluorescence spectroscopy. Of these elements, the concentrations of Pb, Tl, Sb, Cd, Se, As, Zn, Ni, Cr, and S increased markedly with decreasing particle size. To account for the trace element concentration dependence on particle size, a mechanism is proposed involving high-temperature volatilization of a species containing the trace element followed by preferential condensation or adsorption onto the smallest particles. Environmental significance of the measurements is discussed.
620 citations