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|Title:||Trace analysis of toxic metals, III. Determination of chromium as trivalent chromium by differential pulse polarography|
|Authors:||Hsieh, S.A.K. |
|Source:||Hsieh, S.A.K.,Ma, T.S. (1988-01). Trace analysis of toxic metals, III. Determination of chromium as trivalent chromium by differential pulse polarography. Mikrochimica Acta 96 (1-6) : 167-174. ScholarBank@NUS Repository. https://doi.org/10.1007/BF01236101|
|Abstract:||Methods for trace analysis of chromium as Cr3+ were investigated, using differential pulse polarography in various media. Determination at the ng/ml-μg/ml range can be carried out in KCl/HCl, KCNS/HOAc, and other media. Total concentration of chromium in a solution containing Cr3+ and HCrO4 - can be determined in KCNS/HOAc, and it is found that HCrO4 - can be converted quantitatively to Cr3+. The relative quantity of HCrO4 - and Cr3+ can be determined by the difference between the total chromium concentration and the concentration of HCrO4 -. The sensitivity (12.5 ng/ml) and accuracy of this method is better than the method that determines total chromium as HCrO4 -. © 1988 Springer-Verlag.|
|Source Title:||Mikrochimica Acta|
|Appears in Collections:||Staff Publications|
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