Abstract
A method for the separation and preconcentration of Cr(III) and Cr(VI) on activated carbon in presence of diethyldithiocarbamate as a complexing reagent was optimized. The method makes it possible to achieve 200- to 500-fold Cr(VI) concentrating depending on the initial volume of the solution to be analysed and the final volume eluted. The Cr(VI) concentration in the background solution determined with RSD 30% was equal to 1.5 μg L. The limit of Cr(VI) determination was equal to 0.9 μg L.
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Yaman, M. Determination of Cr(VI) and Cr(III) by Using Activated Carbon-Atomic Absorption Spectrometry. Journal of Analytical Chemistry 58, 456–460 (2003). https://doi.org/10.1023/A:1024078114423
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DOI: https://doi.org/10.1023/A:1024078114423