Detection of trace amounts of toxic metals in environmental samples by laser-excited atomic fluorescence spectrometry. Invited lecture

Mikhail A. Bolshov; Vsevolod G. Koloshnikov; Sergei N. Rudnev; Claude F. Boutron; Ursula Görlach; Clair C. Patterson

doi:10.1039/JA9920700099

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Journal of Analytical Atomic Spectrometry

Issue 2, 1992

Innovative research on the fundamental theory and application of spectrometric techniques.

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Detection of trace amounts of toxic metals in environmental samples by laser-excited atomic fluorescence spectrometry. Invited lecture

Mikhail A. Bolshov, Vsevolod G. Koloshnikov, Sergei N. Rudnev, Claude F. Boutron, Ursula Görlach and Clair C. Patterson

J. Anal. At. Spectrom., 1992,7, 99-104

DOI: 10.1039/JA9920700099

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Abstract
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Results for the direct determination of trace amounts of Pb and Cd in Antarctic and Greenland ancient ice and recent snow by laser-excited atomic fluorescence spectrometry (LEAFS) are presented. The whole procedure starting from field sampling, mechanical decontamination of the samples in an ultra-clean laboratory and final analysis of the decontaminated samples is described. The measured concentrations varied in the ranges 0.1–3 pg ml^–1 for Cd and 0.3–30 pg ml^–1 for Pb. The results for direct analysis by LEAFS agree favourable with those obtained by isotope dilution mass spectrometry and electrothermal atomic absorption spectrometry, which require time-consuming pre-treatment and pre-concentration stages.

Abstract from Analytical Abstracts 1993

Samples of ice and snow were melted and acidified with 0.1% HNO3. The soln. was analysed directly by laser-excited AFS with a LAFAS-1 instrument (ISAN) in which a dye laser was pumped by a XeCl excimer laser and electrothermal atomization was used. Lead atoms were excited at 282.2 nm with direct-line fluorescence measurement at 405.8 nm; Cd atoms were excited and measured at 228.8 nm. Results are presented and compare favourably with those obtained by isotope-dilution MS and electrothermal AAS.

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Mikhail A. Bolshov
Vsevolod G. Koloshnikov
Sergei N. Rudnev
Claude F. Boutron
Ursula Görlach
Clair C. Patterson

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Detection of trace amounts of toxic metals in environmental samples by laser-excited atomic fluorescence spectrometry. Invited lecture

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