ABSTRACT
The quantification of the total arsenic in environment samples has routinely been performed. But, it has been very well known that toxicity and biological effect depend on the chemical species of arsenic in samples. Of the chemical species of arsenic, inorganic arsenic As3+ and As5+ are highly toxic. Therefore, the importance on research of arsenic species has greatly increased. Speciation of arsenic species in environmental samples is essential in order to provide a meaningful assessment of exposure due to differences in toxicities of the chemical forms.
