石墨炉原子吸收法测定中药百里香中微量镉  

Determination of trace cadmium in Chinese medicine herb thymus serpyllum L.by graphite furnace atomic absorption spectrometry

作　　者：丁健华[1] 李加新[1] 

机构地区：[1]佛山科学技术学院化学与化工系,广东佛山528000

出　　处：《化学研究与应用》2003年第4期575-576,共2页Chemical Research and Application

摘　　要：A method was proposed for the determination of trace cadmium in Chinese medicine herb Thymus serpyllum L.by graphite furnace atomic absorption spectrometry(GFAAS).A chemical modifier and its proper concentration,the influence factors including ashing and atomization temperatures,atomization time and coexisting ions were investigated.Under the optimum experimental conditions,the detection limit and the relative standard deviation of the method were 06 pg and 22%(n=11),respectively.The recovery was between 965% and 106%.The method is simple,rapid and accurate.A real sample Thymus serpyllum L.and a biological standard sample(GBW 08501)of Peach Leaves were analyzed for cadmium by this method to afford Satisfactory results.A method was proposed for the determination of trace cadmium in Chinese medicine herb Thymus serpyllum L.by graphite furnace atomic absorption spectrometry(GFAAS).A chemical modifier and its proper concentration,the influence factors including ashing and atomization temperatures,atomization time and coexisting ions were investigated.Under the optimum experimental conditions,the detection limit and the relative standard deviation of the method were 06 pg and 22%(n=11),respectively.The recovery was between 965% and 106%.The method is simple,rapid and accurate.A real sample Thymus serpyllum L.and a biological standard sample(GBW 08501)of Peach Leaves were analyzed for cadmium by this method to afford Satisfactory results.

关 键 词：石墨炉原子吸收法 测定 中药 百里香 微量元素 镉 植物药 化学改进剂 

分 类 号：R284.1[医药卫生—中药学] R282.71[医药卫生—中医学]