Speciation of inorganic arsenic and selenium in contaminated ground water 
samples - distribution and long-term stability of species

Raessler, M.; Michalke, B.; Schramel, P.; Schulte-Hostede, S.; Kettrup, A.

doi:10.1080/03067319808035890

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Speciation of inorganic arsenic and selenium in contaminated ground water samples - distribution and long-term stability of species

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Citation

Raessler, M., Michalke, B., Schramel, P., Schulte-Hostede, S., & Kettrup, A. (1998). Speciation of inorganic arsenic and selenium in contaminated ground water samples - distribution and long-term stability of species. International Journal of Environmental Analytical Chemistry, 72(3), 195-203. doi:10.1080/03067319808035890.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000E-E145-A

Abstract

This paper presents the results of speciation studies of arsenic and selenium in contaminated ground water samples from Kelheim/Germany. Results are based on separation of ions by HPLC using a phosphate buffer. The separated species were collected in fractions and analysed element-specifically by HG- AAS. Dominating species were arsenate and selenate, while arsenite and selenite were less important. Long-term studies revealed that As (V), Se (IV) and Se (VI) remained stable for up to 12 months, whereas oxidation of As (III) was observed after 3 months.