Sensitive Spectrophotometric Determination of Copper(II) in the Presence of Manganese
作者:
Jorge Nozaki,
Huanchun Zhou,
期刊:
Analytical Letters
(Taylor Available online 1987)
卷期:
Volume 20,
issue 3
页码: 361-367
ISSN:0003-2719
年代: 1987
DOI:10.1080/00032718708064573
出版商: Taylor & Francis Group
关键词: Copper determination;Spectrophotometry;PAN complex;Manganese dioxide
数据来源: Taylor
摘要:
This paper recommends a simple and convenient procedure for the determination of copper(II) in the presence of large amounts of manganese. An aqueous solution of hydroxylamine hydrochloride and diluted sulphuric acid was used for dissolution and reduction of MnO2. The copper(II) was complexed with an ethanolic 0.05% PAN solution in the pH range of 2 - 3 in aqueous medium. The absorbances of copper-PAN complexes are measured at 550 nm where molar absorptivity is 2.10 L.mol−1.cm−1.
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