Improvement in arsenic speciation,using hydride generation and atomic absorption spectrophotometry |
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Authors: | Pierre Michel Bernard Averty Valerie Colandini |
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Affiliation: | (1) Ifremer, BP 1049, F-44037 Nantes, France |
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Abstract: | Improvements in arsenic speciation in sea-water using hydride generation, cold trapping and AAS are reported. Progressive addition of sodium tetrahydroborate and pH optimization are essential to obtain reliable results. The response factor for AsIII, Asv, methylarsonic acid and dimethylarsinic acid is nearly the same when sulphuric acid is used for the hydride generation step. |
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Keywords: | arsenic water analysis hydrides speciation |
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