APPLICATION OF HYDRIDE GENERATION TO THE DETERMINATION OF TRACE CONCENTRATIONS OF ARSENIC BY CAPACITIVELY COUPLED MICROWAVE PLASMA

Journal article

Authors/Editors

Masamba, Wellington

Research Areas

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Publication Details

Author list: HUEBER DM, MASAMBA WRL, SPENCER BM, WINEFORDNER JD

Publisher: Elsevier: 12 months

Place: AMSTERDAM

Publication year: 1993

Journal: Analytica Chimica Acta (0003-2670)

Journal acronym: ANAL CHIM ACTA

Volume number: 278

Issue number: 2

Start page: 279

End page: 285

Number of pages: 7

ISSN: 0003-2670

Languages: English-Great Britain (EN-GB)

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Abstract

Studies are presented describing an application of the NaBH4 reduction of soluble arsenite to form arsine for ultra-trace level arsenic determination by capacitively coupled microwave plasma atomic emission spectrometry. The arsine was condensed in a liquid nitrogen cooled trap, and introduced into the plasma after the elimination of reaction by-products that would reduce the excitation efficiency of the plasma. Use of a photodiode array detector provided a means of background correction. The procedure resulted in a limit of detection of 110 pg and a linear dynamic range of 10(4) for arsenic.

Keywords

ARSENIC, ATOMIC EMISSION SPECTROMETRY, HYDRIDE GENERATION, MICROWAVE PLASMA, PLASMA

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