Spectrophotometric determination of trace copper in electroplating wastewater
Received date: 2003-05-10
Online published: 2010-10-01
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.
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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