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Spectrophotometric Determination of Copper(II) Using Diamine-Dioxime Derivative
Author(s) -
Khajadpai Thipyapong,
Chomchai Suksai
Publication year - 2003
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
eISSN - 1229-5949
pISSN - 0253-2964
DOI - 10.5012/bkcs.2003.24.12.1767
Subject(s) - diamine , copper , derivative (finance) , chemistry , diamine oxidase , polymer chemistry , organic chemistry , business , finance , enzyme
A simple, rapid and sensitive spectrophotometric method is herewith proposed for the determination of copper (II) by using diamine-dioxime ligand, meso-3,6,6,9-tetramethyl-4, 8-diazaundecane-2, 10-dione dioxime or meso-HexaMethyl Propylene Amine Oxime (meso-HMPAO). This method is based on the formation of a stable 1 : 1 red-pink complex between copper(II) and meso-HMPAO in aqueous solution Absorption measurements were carried at 497 nm, with a molar absorptivity value of 338 L mol-1 cm-1. Beer's law was obeyed over the concentration range of 0.5-370 μg mL - 1 with a Sandell's sensitivity value of 0.18 μg cm - 2 . The proposed method has been successfully applied for determination of copper (II) in foodstuffs and pharmaceutical samples. The results obtained from this method are comparable with those obtained AAS.

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