Spectrophotometric determination of trace copper in electroplating wastewater

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  • School of Chemistry and Chemical Engineering, Hunan University of Science and T echnology, Xiangtan 411201, China

Received date: 2003-05-10

  Online published: 2010-10-01

Abstract

A complex chromogenic reaction of Cu2+ and 5, 8-dihydroxy-1,4-na phthoquinone(Naph) has been studied.The results show that the maximun absorption of the complex is at 350 nm with a molar absorptivity of 1.85 × 104 L/(mol·cm )in pH 7 ammonium acetate solution and in the presence of OP,the detection limi ts of the method is 3.5 μ/L for Cu2+ and Beer′s law is in accordance with Cu2+ in the range of 0 ~ 4.0 mg/L.The method has been applied to the determinatio n of trace Cu in treating electroplating wastewater by modified meerschaum with satisfactory results.

Cite this article

Hu Zhongyu, Yang Mingping . Spectrophotometric determination of trace copper in electroplating wastewater[J]. Industrial Water Treatment, 2004 , 24(4) : 49 -50 . DOI: 10.11894/1005-829x.2004.24(4).49

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