The difference in toxicity between Cr(III) and Cr(VI) species is one of the main reasons for the recent developments in analytical procedures for their differentiate. Non-chromatographic methods offer highly convenient tools for this purpose and can be used as a fast and cheap alternative to the chromatographic processes. The present work overviews and discuss different non-chromatographic procedures for speciation of chromium in natural water samples such as coprecipitation, dialysis, solvent and solid phase extraction. This survey will attempt to cover the state of-the art from 2005 to 2010.
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Krystyna Pyrzyńska (2011) studied this question.
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