Determination of zinc in pharmaceutical products by use of a sequential injection analysis system

被引：0
|
作者：
van Staden, JKF [1 ]
Tsanwani, M [1 ]
机构：
[1] Univ Pretoria, Dept Chem, ZA-0002 Pretoria, South Africa
来源：
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 2001年 / 371卷 / 03期
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D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A sequential injection analysis (SIA) system is proposed for the determination of zinc in pharmaceutical samples. The method is based on the spectrophotometric detection of zinc using xylenol orange as a colour reagent at 568 nm. The system can be used to monitor zinc at a frequency of 30 samples h(-1) with an average recovery of +/- 98.5% and a relative standard deviation of less than 1%. A linear relationship between peak height and zinc concentration is obtained between 10 and 60 mg L-1. The results obtained are in good agreement with those obtained by use of a standard method.
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页码：376 / 379
页数：4
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