Determination of arsenic in geological materials by electrothermal atomic-absorption spectrometry after hydride generation

R. F. Sanzolone; T. T. Chao; E. P. Welsch

doi:10.1016/s0003-2670(01)93076-4

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Determination of arsenic in geological materials by electrothermal atomic-absorption spectrometry after hydride generation

R. F. Sanzolone·T. T. Chao·E. P. Welsch

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Abstract

Rock and soil samples are decomposed with HClO 4 —HNO 3 ; after further treatment, arsine is generated and absorbed in a dilute silver nitrate solution. Aliquots of this solution are injected into a carbon rod atomizer. Down to 1 ppm As in samples can be determined and there are no significant interferences, even from chromium in soils. Good results were obtained for geochemical reference samples.

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R. F. Sanzolone, T. T. Chao, E. P. Welsch. 1979. Determination of arsenic in geological materials by electrothermal atomic-absorption spectrometry after hydride generation. https://doi.org/10.1016/s0003-2670(01)93076-4

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