超滤分离分析中草药茯苓中锰 镁 钾的初级形态

The primary speciation analysis of Mn,Mgand K in Chinese herbals by ultrafiltration

采用超滤分离法对中草药茯苓中生命元素Mn、Mg、K进行了初级形态的研究。用 0 4 5 μm滤膜将茯苓水煎液分成可溶态和悬浮态。对于可溶态 ,再用 0 2 2、0 15 μm以及分子量分别为 5万、1万的滤膜进行逐级分离。用火焰原子吸收法测定各级滤液中元素含量。结果表明 :茯苓水煎液中 ,Mg、K结合的络合物粒径主要在大于 0 2 2 μm和小于 3 8nm范围 。

A method for the primary speciation analysis of Mn, Mg and K in Chinese herbals Poria cocos (schw.) wolf separated by ultrafiltration. The decoction of sample was divided two species including soluble and suspended solid by 0 45 μm filter membrane. All kinds of speciation of mentals were separated furtherly by ultrafiltration membrane of 0 22 μm,0.15μm, 6 6 nm and 3 8 nm. All above mental species were determined by flame atomic absorption spectrometry. The results showed that the size of compounds of Mg, K is bigger than 0 22 μm. Some of them is smaller than 3 8 nm. The size of compounds of Mn is distributed in a range of 3 8 nm～0 45 μm. Others is smaller than 3 8 nm.