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2009•jOURNAL OF southwest University for NationalitiesRequires access

Simultaneous determination of arsenic and mercury in water by hydride generation-atomic fluorescence spectrometry

Wang Zheng

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Abstract

An HG-AFS method for the determination of arsenic and mercury in effluents of river water is described in this paper.An intermittent flow injection system is used for the generation of hydride of arsenic or mercury.The hydride generated is separated from the solution and led into the quartz atomizer of the AFS-instrument.The hydride generated is atomized and emit atomic fluorescence.The optimum conditions for the determination are tested and discussed.The limit of detection of this method is found to be 0.018μg/L for As, 0.006μg/L for Hg.The RSD of this method is found to be 2.4% for As,10% for Hg.The recovery is found to be 90%～110% and it could be concluded that the present method is simple, sensitive and credible.

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What this paper is about

An HG-AFS method for the determination of arsenic and mercury in effluents of river water is described in this paper.An intermittent flow injection system is used for the generation of hydride of arsenic or mercury.The hydride generated is separated from the solution and led into the quartz atomizer of the AFS-instrument.The hydride generated is atomized and emit atomic fluorescence.The optimum conditions for the determination are tested and discussed.The limit of detection of this method is found to be 0.018μg/L for As, 0.006μg/L for Hg.The RSD of this method is found to be 2.4% for As,10% for Hg.The recovery is found to be 90%～110% and it could be concluded that the present method is simple, sensitive and credible.

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Available abstract

An HG-AFS method for the determination of arsenic and mercury in effluents of river water is described in this paper.An intermittent flow injection system is used for the generation of hydride of arsenic or mercury.The hydride generated is separated from the solution and led into the quartz atomizer of the AFS-instrument.The hydride generated is atomized and emit atomic fluorescence.The optimum conditions for the determination are tested and discussed.The limit of detection of this method is found to be 0.018μg/L for As, 0.006μg/L for Hg.The RSD of this method is found to be 2.4% for As,10% for Hg.The recovery is found to be 90%～110% and it could be concluded that the present method is simple, sensitive and credible.

Key concepts: Hydride, Mercury (programming language), Arsenic, Detection limit, Chemistry, Environmental chemistry, Effluent, Fluorescence spectrometry

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