摘要
用混酸（发烟硝酸＋浓硫酸）回流消化中草药样品，Fe（OH）3共沉淀富集锗，苯基荧光酮－溴化十六烷基三甲胺（CTMAB）胶束增溶分光光度法测定了18种中草药中的锗含量，灵芝和白花蛇舌草含量较高，分别为2．46和0．35μg／g。本法检出界限为193ng／g，变异系数为0．89％，在不同中草药中的回收率为91％～93％。
By digestion with concentration sulfate acid and fuming nitri c acid under refluxing coprecipitation with Fe(OH)3, colorimetry with phenylfluorone-cetyl trimethyl ammonium bromide (CTMAB), germanium (Ge) contents of 18 kinds of Chinese medicinal herbs were determined. The Ge contents in Ganoderma lucidum and oldenladia diffusa were higher than those of others (2.46 and 0.35 ×10-8, respectively).In this method, the recoveries of Ge added to various herbs were in the range of 91%~93%. The detection limit and coefficient variation were 198 ng/g and 0.89%, respectively.
出处
《中草药》
CAS
CSCD
北大核心
1995年第6期295-297,共3页
Chinese Traditional and Herbal Drugs
