scholarly journals The analysis of heavy metals in Chinese herbal medicine by flow injection-mercury hydride system and graphite furnace atomic absorption spectrometry

2009 ◽  
Vol 20 (4) ◽  
pp. 293-297 ◽  
Author(s):  
Xudong Yuan ◽  
Koh Hwee Ling ◽  
Chui Wai Keung
Keyword(s):  
Heavy Metals ◽  
Herbal Medicine ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Chinese Herbal Medicine ◽  
Flow Injection ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Chinese Herbal ◽  
Graphite Furnace Atomic Absorption

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

2012 ◽  
Vol 485 ◽  
pp. 119-122
Author(s):  
Shao Ping Feng ◽  
Zhao Long Huang ◽  
Ping Yi ◽  
Na Wu ◽  
Ze Feng Wang ◽  
...  
Keyword(s):  
Herbal Medicine ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Chinese Herbal Medicine ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Matrix Modifier ◽  
Chinese Herbal ◽  
Relative Standard ◽  
Graphite Furnace Atomic Absorption

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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