- Volume 20,Issue 3,1999 Table of Contents
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Xiaoru Wang , Zhixia Zhuang , Dahai Sun , Jiangxing Hong , Xihong Wu
1999, 20(3):86-91. DOI: 10.46770/AS.1999.03.002
Abstract:The metal content in several TCM drugs was determined by ICP-MS. The efficiencies of different sample digestion methods were compared. Since one of the products studied is known to contain arsenic sulfides as a main ingredient, a solvent fractionation scheme was developed and applied to speciate As in the product. The metal content in the same TCM drug produced by different manufacturers was compared. The concentration of some metals such as Pb and Cd differs widely with different manufacturers, suggesting that their origin is primarily from external contamination. The high sensitivity and precision of the ICP-MS technique offers considerable advantages over conventional ICP-OES techniques for the analysis of complex samples such as TCM materials. Standardized analytic protocols based on ICP-MS are being developed fur the determination and characterization of metals and trace elements in TCM materials for product quality assessment.
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R.K. Malhotra , K. Satyanarayana , G.V. Ramanaiah
1999, 20(3):92-102. DOI: 10.46770/AS.1999.03.003
Abstract:
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S. Moreno-Grau , A. Pérez-Tornell , J. Moreno , J. Bayo , J.M. Angosto , J. Moreno-Clavel
1999, 20(3):113-119. DOI: 10.46770/AS.1999.03.006
Abstract:
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Pilar Bermejo-Barrera , Mónica Ferrón-Novais , Guadalupe González-Campos , Adela Bermejo-Barrera
1999, 20(3):120-129. DOI: 10.46770/AS.1999.03.007
Abstract:
Supported by:Beijing E-Tiller Technology Development Co., Ltd.