Spectrophotometric determination of trace copper in water with DBON-PF

Zhou Xiulin, Zhu Lizhe

doi:10.11894/1005-829x.2004.24(4).51

Industrial Water Treatment >

2004 , Vol. 24 >Issue 4: 51 - 52

DOI: https://doi.org/10.11894/1005-829x.2004.24(4).51

Spectrophotometric determination of trace copper in water with DBON-PF

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1. Department of Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China;
2. Department of Resource Engineering, Hunan University of Science and Technolog y, Xiangtan 411201, China

Received date: 2003-03-16

Online published: 2010-10-01

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Abstract

A red violet complex of copper(Ⅱ) with 4,5-dibromo-2-nitro-pheny lfluorone (DBON-PF) is formed in the medium of Na₂B₄O₇·H₂O buffer solution(pH 8.5) containing cetyltrimethyl ammonium bromide (CTMAB). The maximum absorption wavelength of complex is at 590 nm and apparent molar absorptivity is 1.02 ×10₅ L/(mol·cm).It is in accord with Beer′s Law,when the concentration of coppe r is 0 ～ 0.6 mg/L.The method possesses the advantages of simplicity and high s ensitivity.It is applied to the determination of trace copper in water with sat isfactory results.

Key words： copper; cetyltrimethyl ammonium bromide(CTMAB); 4,5-dibromo-2-nitro-phenylfluorone(DBON-PF)

Cite this article

Zhou Xiulin, Zhu Lizhe . Spectrophotometric determination of trace copper in water with DBON-PF[J]. Industrial Water Treatment, 2004 , 24(4) : 51 -52 . DOI: 10.11894/1005-829x.2004.24(4).51

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