Spectrophotometric determination of zinc in pharmaceutical samples using di-2-pyridyl ketone salicyloylhydrazone

被引：25

作者：

Gaubeur, I ^{[1
]}

Areias, MCD ^{[1
]}

Terra, UHSV ^{[1
]}

Suárez-Iha, MEV ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim, BR-05513970 Sao Paulo, Brazil

来源：

SPECTROSCOPY LETTERS | 2002年 / 35卷 / 03期

关键词：

zinc determination; spectrophotometric; DPKSH;

D O I：

10.1081/SL-120005678

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A highly sensitive procedure for spectrophotometric determination of zinc has been developed. At pH 4.5, in 50% (V/V) ethanol-water medium and, in the presence of di-2-pyridyl ketone salicyloylhydrazone (DPKSH), zinc forms a yellow complex which has maximum absorption at 376 nm The molar absorptivity is 4.82 x 10(4) L mol(-1) cm(-1). The detection limit of this method is 62.1 nM for Zn(II). The method has been applied to the spectrophotometric determination of zinc in pharmaceutical formulations and the results comply with those obtained by AAS. The proposed method is simple, rapid and accurate.

引用

页码：455 / 465

页数：11

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