Trace elements in the aqueous extract of twenty Chinese drugs before and after charring
Gong, Y.; Lu, X.
Zhongguo Zhong Yao Za Zhi 16(2): 85
1991
ISSN/ISBN: 1001-5302 PMID: 1872969 Document Number: 384651
Our study on the variation of trace element contents in the aqueous extract of 20 Chinese drugs before and after charring has shown that after charring Ca ions increase noticeably in the extract of 6 drugs, increase slightly in another 6 and decrease in varying degrees in the remaining 8. In all the charred drugs no rise has been observed in the contents of trace elements, but instead, in most of them the contents tend to drop.