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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 37, Number 1
JKCSEZ 37(1)
February 20, 1993 

Spectrophotometric and Derivative Spectrophotometric determination of Copper with N,N'-Oxalylbis(2-Pyridyl-3'-sulphobenzoylhydrazone)

N,N'-Oxalylbis(2-pyridyl-3'-sulphobenzoylhydrazone)을 이용한 구리의 분광광도법 및 미분 분광광도법 정량
Yong-Nam Kim, Kyu-Seong Choi, Seung-Choon Choi, Ryou-Jin Chung

김용남, 최규성, 최승춘, 정유진
수용성 발색시약인 N,N'-oxalylbis(2-pyridyl-3'-sulphobenzoylhydrazone)을 합성하여 분광광도법 및 1, 2차 미분 분광광도법에 의한 구리의 정량법을 개발하였다. 정량은 구리착물 수용액(pH 1.89)의 흡광도 및 1,2차 미분값을 379, 395, 363 그리고 421nm의 파장에서 각각 측정함으로써 수행되었다. 정량 가능한 구리의 농도 범위는 0.12~1.20μg/ml 였으며 이 방법을 알루미늄 합금시료의 분석에 적용하였다. 2차 미분 분광광도법으로 421nm에서 측정했을 때가 가장 좋은 결과를 나타내었다.

A water-soluble chromogenic reagent, N,N'-oxalylbis(2-pyridyl-3'-sulphobenzoylhydrazone) has been synthesized. Spectrophotometric and first-and second-derivative spectrophotometric methods for the determination of copper with the reagent have been developed. Determination has been performed by measuring the absorbance and the first-and second-derivative values of the copper complexes in aqueous solutions (pH 1.89) at 379, 395, 363 and 421 nm, respectively. The method allows the determination of 0.12-1.20 μg/ml of copper and has been applied to the analysis of aluminium alloy samples. The best results have been obtained from the measurements of the second-derivative values at 421 nm

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