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Lead Determination in Chinese Herbal Medicine by Graphite Furnace Atomic Absorption Spectrometry Using Matrix Modifier

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Abstract:

An effective and expeditious method was developed for continuous determination of Pb in Chinese herbal medicine of Panax Notoginseng by using graphite furnace atomic absorption spectrometry (GFAAS) with high-pressure digestion. Under the optimum conditions, the linear range of Pb was 0 to 50 µg/L, and its detection limits was 0.871 µg/L, with 2% (NH4)2HPO4 was used as matrix modifier, respectively. The precision relative standard deviations was 3.98% for determining Pb by this method, and the spike recoveries range from 93.4% to 103.0%.

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Advanced Research on Material Engineering and its Application View Preview

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Periodical:

Advanced Materials Research (Volume 485)

Pages:

119-122

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.485.119

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Online since:

February 2012

Authors:

Shao Ping Feng, Zhao Long Huang, Ping Yi, Na Wu, Ze Feng Wang, Wei Liu

Keywords:

Chinese Herbal Medicine, Graphite Furnace Atomic Absorption Spectrometry, Lead, Matrix Modifier

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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