[Spectrophotometric studies on and applications of the reaction of copper with 2-hydroxy-3-carboxy-5-sulfobenzenediazoaminoazobenzene]

[Spectrophotometric studies on and applications of the reaction of copper with 2-hydroxy-3-carboxy-5-sulfobenzenediazoaminoazobenzene] Research Abstract Details 

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[Spectrophotometric studies on and applications of the reaction of copper with 2-hydroxy-3-carboxy-5-sulfobenzenediazoaminoazobenzene] Abstract Text:

Z Guo,S Cai,

A highly sensitive color reaction of copper(II) with 2-hydroxy-3-carboxy-5-sulfobenzenediazoaminoazobenzene (HCSDAA) in the presence of Triton N-101 was studied in detail. In borax buffer medium at pH 10.4-11.5, the red complex formed has a maximum absorption at 530 nm and its apparent molar absorptivity is 1.31 x 10(5)L x mol(-1) x cm(-1) and sandell sensitivity is 4.85 x 10(-4) microg x cm(-2). The molar ratio of copper(II) to HCSDAA in the complex is found to be 1:2. Beer's law is obeyed in the concentraction range of 0-0.24 microg/mL for copper. The proposed method has been applied to the spectrophotometric determination of microamounts of copper in ore and peanut with the relative error and the relative standard deviation (n = 6) of less than 3.7% and 1.6%, respectively.

[Spectrophotometric studies on and applications of the reaction of copper with 2-hydroxy-3-carboxy-5-sulfobenzenediazoaminoazobenzene] Publishing Authors By Initials

Z Guo,S Cai,

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[Spectrophotometric studies on and applications of the reaction of copper with 2-hydroxy-3-carboxy-5-sulfobenzenediazoaminoazobenzene] Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Guang pu xue yu guang pu fen xi = Guang pu

VOLUME: 17

Page Numbers: 108-12

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ISSN: 1000-0593

DAY: 6

MONTH: Dec

YEAR: 1997

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LANGUAGE: chi

NlmUniqueID: 9424805

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Grant and Affiliation Information for [Spectrophotometric studies on and applications of the reaction of copper with 2-hydroxy-3-carboxy-5-sulfobenzenediazoaminoazobenzene]

AFFILIATION: Department of Chemistry, Nankai University, 300071 Tianjin.

Country: China

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MEDLINETA: Guang Pu Xue Yu Guang Pu Fen X

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