Determination of Trace Chromium (VI) in Tanning Wastewater by Flow Injection Spectrophotometry

Abstract:

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In 1.0 mol/L H2SO4 solution, a rapid and simple flow—injection spectrophotometric method has been developed for Cr(Ⅵ) determination, based on the violet—red Cr(Ⅵ)—diphenylcarbazide chelates formed by reactions. The results show, under optimum conditions, the maximum absorption of the complex is at 540 nm and the detection limits of the method is 0.0136mg/L for Cr(Ⅵ) and Beer’s law is obeyed for Cr(Ⅵ) in the range of 0.03—1.60mg/L. The determination frequency is l00 times/h. The relative standard deviation of eleven replicates is less than 4.0%. The method has been applied to the determination of trace Cr(Ⅵ) in tanning wastewater with satisfactory results.

Info:

Periodical:

Advanced Materials Research (Volumes 113-116)

Edited by:

Zhenyu Du and X.B Sun

Pages:

1732-1734

DOI:

10.4028/www.scientific.net/AMR.113-116.1732

Citation:

X. Zhao et al., "Determination of Trace Chromium (VI) in Tanning Wastewater by Flow Injection Spectrophotometry", Advanced Materials Research, Vols. 113-116, pp. 1732-1734, 2010

Online since:

June 2010

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Price:

$35.00

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