Study on Determination of Trace Mercury in Chinese Herbal Medicines by Hydride Generation-Atomic Fluorescence Spectrometry

被引：0

作者：

Pan, Qingshan ^{[1
]}

Liu, Wei ^{[1
]}

Yi, Ping ^{[1
]}

Huang, Dushu ^{[1
]}

Wu, Na ^{[1
]}

Wang, Zefeng ^{[1
]}

机构：

[1] Honghe Univ, Sch Sci, Honghe 661199, Yunnan, Peoples R China

来源：

ADVANCES IN CHEMISTRY RESEARCH II, PTS 1-3 | 2012年 / 554-556卷

关键词：

mercury; atomic fluorescence spectrometry; Chinese herbal medicines; ABSORPTION-SPECTROMETRY; PRECONCENTRATION; FLOW;

D O I：

10.4028/www.scientific.net/AMR.554-556.1669

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A hydride atomic fluorescence spectrometry method was developed for the determination of trace mercury in Chinese herbal medicines. A digestion system using HNO3-H2O2 under high pressure was applied for the pretreatment of the samples. The operating condition of the instrument were optimized. The effect of the acid in sample solution and carrier liquid, and the effect of reducing agent KBH4 in solution to the determination of mercury were studied. Under the optimum conditions. Five kinds of Chinese herbal medicines in Yun Nan province of China was measured. There was a good linear coefficient between the fluorescent intensity and mercury concentration in the range of 0 similar to 10 mu g.L-1 with a correlation coefficient of 0.9998,while the determination limits was 3.7ng.L-1,the relative standard deviation was 2.4%. The content of total mercury in the samples was 5.25 similar to 16.32ng.g(-1) and a recovery range of 83.6% similar to 109.2% were obtained.

引用

页码：1669 / 1672

页数：4

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