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[Study on the speciation of calcium in Baihu decoction].

Authors
Type
Published Article
Journal
Guang pu xue yu guang pu fen xi = Guang pu
Publication Date
Volume
30
Issue
10
Pages
2824–2826
Identifiers
PMID: 21137430
Source
Medline

Abstract

A method for speciation analysis of calcium in Baihu decoction was presented. The six different forms of Ca in the filtrate including free ions, non-free ions, exchangeable, non-exchangeable, organic and inorganic were separated by using ion-exchange resin (IER), chelating resin and organic solvent extraction. Various forms of Ca were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). The recovery for the method is 90.0%-110.0%. The result showed that baihu decoction extract was a kind of complex solution, in which 83.25% of Ca existed in free ions form and 23.79% of Ca existed in organic form in the soluble filtrate.

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