Abstract
An overview is given of current analytical methodologies for arsenic speciation in environmental samples. Most of these are conventional instrumental methods – mainly chromatographic techniques (HPLC, GC, etc.) coupled with a variety of detectors. However, methods using micro-organisms are increasingly being applied for the removal of metal ions and other metal species from aqueous solutions. The use of the alga Chlorella vulgaris is proposed for the separation of arsenic(III) from the other arsenic species. The arsenic concentration is measured by hydride generation atomic absorption spectrometry.
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