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.
吕 培，李 祥*，陈建伟 . 白虎汤中钙元素的化学形态分析 [J]. 光谱学与光谱分析, 2010, 30(10): 2824-2826.
Lü Pei, LI Xiang*, CHEN Jian-wei . Study on the Speciation of Calcium in Baihu Decoction . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(10): 2824-2826.
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