W. Fei
2005
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Journal
Journal of Changchun University of Technology
Abstract
A new photometric method for the determination of trace chromium(VI) is proposed in this paper.In an acidic medium,sodium diphenylamine sulfonate was oxidized by Chromium(VI) to a(purple) product with its λ_(max) at 552 nm,and Beer's Law was obeyed over the range of 0~3.2 μg/mL chromium.The proposed method has been applied to the determination of chromium in waste water with satisfactory results.