Direct Determination of Thalliilm in Natural Waters by Laser Induced Fluorescence in a Graphite Furnace

Axner, Ove; Chekalin, N. V.; Ljungberg, Peter; Malmsten, Yvonne

doi:10.1080/03067319308045988

Cited by 25 publications

(6 citation statements)

References 14 publications

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“…A Laser-Excited Atomic Fluorescence Spectrometer (LEAFS) makes possible direct analysis of real substrates for various elements [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

LEAFS determination and concentration of metals in Great Lakes ecosystem

Cheam

Lechner

Desrosiers³

et al. 1996

Analytical and Bioanalytical Chemistry

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A Laser-Excited Atomic Fluorescence Spectrometric (LEAFS) method for Tl determination has been extended to investigate the direct determination (without preconcentration nor acid digestion) of total Pb, for which the method validation was successfully achieved by using a standard reference material as well as many spike recoveries of digested and undigested unfiltered water samples. The method was applied to study total and dissolved Pb in many water columns collected from different stations in Lake Ontario. Dissolved Pb was found to be about twice as much as dissolved Tl, and total Pb about seven times higher than total Tl. Seventy five percent of Pb is in particulate form versus 11% for Tl. Also, a simple cold dissolution procedure using HNO(3) and HF (not a hot acid digestion) is proposed to "liquefy" sediments in a form suitable for LEAFS analysis and was used to analyze a sediment core, where pore water samples were also collected. The interaction dynamics of Tl within the natural environment of a water/pore water/sediment system from Lake Erie was assessed. The calculations of fluxes suggest a strong similarity between Tl and Cd geochemical transport. The paper also presents for the first time a genuine sediment pore water profile of Tl concentration, which ranged from sub- to 40 ng/l and which was directly determined by LEAFS.

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“…A Laser-Excited Atomic Fluorescence Spectrometer (LEAFS) makes possible direct analysis of real substrates for various elements [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

LEAFS determination and concentration of metals in Great Lakes ecosystem

Cheam

Lechner

Desrosiers³

et al. 1996

Analytical and Bioanalytical Chemistry

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show abstract

“…805,806 The method described by Axner et al 806 employed laser-induced fluorescence in a graphite furnace. The method allowed the direct measurement of thallium without any preconcentration steps.…”

Section: Laser Exit Of Spectrofluorometrymentioning

confidence: 99%

Metals in River Water

Crompton

2015

Determination of Metals in Natural Waters, Sediments and Soils

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“…Applications of ETA-LEAFS included the determination of Bi (304,305), Co (306) and Pb (307) in seawater, Tl (308) and Pb (309) in natural water, Hg in soil digests (310), and As and Se in blood (311). Molecular fluorescence of MgF in a graphite furnace was used for the determination of F (223), and Cl was determined by the molecular fluorescence of InCl (312).…”

Section: Flame Atomic Absorption and Emissionmentioning

confidence: 99%