中草药透骨草中4种微量元素的形态分析

Speciation Analysis of Four Trace Elements in Chinese Medicinal Herb Garden Balsam Stem

按照传统煎煮法对中草药透骨草中铜、锌、铁、镁4种元素进行提取;用微孔滤膜分离提取液中的可溶态与悬浮态;利用大孔吸附树脂柱对可溶态中的有机态与无机态进行分离;采用火焰原子吸收光谱法对各种形态中的4种元素进行测定。结果显示,透骨草中4种元素的总提取率在44.03%—63.15%之间,浸留比在79.46%—188.80%之间,悬浮态颗粒吸附率在10%左右。

The four elements Cu,Zn,Fe and Mg,in Chinese medicinal herb garden balsam stem were extracted by traditional decoction,and the extract was separated into watersoluble state and suspension state by micro porous filtering film.Water-soluble state was divided into organic state and inorganic state based on macro porous adsorption resin.The elements in various state were detected by flame atomic adsorption spectrometry.The results showed that extractive rates of the elements were in the range of 44.03%—63.15% and immerse-residue ratio was 79.46%—188.80%.Adsorption ratio of suspension state was about 10%.