Chinese Pharmaceutical Journal 1999;(4):227-

Determination of copper,zinc and maganese in Ejiao by derivative flame atomic absorption spectrometry

Zhaohui WANG ; Hanwen SUN ; Luming LI

Keywords

Ejiao; derivative; atomic absorption spectrometry

Country

China

Language

Chinese

Abstract

OBJECTIVE:To determine the contents of Cu,Zn and Mn in Ejiao,a kind of Chinese traditional medicine.METHOD:The contents of Cu,Zn and Mn were determined by derivative flame atomic absorption spectrometry (DFAAS) after digested by HNO3-HClO4.RESULTS:The contents of Cu,Zn and Mn were 10.48,12.38 and 18.09μg.g-1 respectively.CONCLUSIONS:The DFAAS possesses higher sensitivities,lower detection limits and better precision.