2010•Hainan Daxue xuebao. Ziran kexue banRequires access

Determination of Copper Iron and Zinc in Radix astragali

HE Bang-ping

Abstract

In order to discuss the feasibility of determining the contents of Cu,Fe,Zn in Radix astragali by spectrophotometry.In the paper,based on the phenomenon that different metal ions can be colored with specific color reagent,engendering visible light absorption,spectrophotometry was adopted to determine the contents of Radix astragali and that of human hair which is used as standard substance.The results showed that Radix astragali is rich in trace element,the content of Fe was 173.08mg·kg-1,Zn was 75.87mg·kg-1,Cu was 17.05mg·kg-1.These data indicated that spectrophotometry has the advantages of simple operation,high-speed and accurate,and could be used widely.

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Key concepts: Reagent, Spectrophotometry, Radix (gastropod), Zinc, Chemistry, Copper, Atomic absorption spectroscopy, Chromatography