用火焰原子吸收光谱法对傣药灯台叶中八种金属元素进行形态分析  

Speciation Analysis of Eight Metal Elements in the Leaves of Alstonia Scholaris by Flame Atomic Adsorption Spectrometry

作　　者：叶艳青[1] 吴娜[1] 杨丽娟[1] 念晓 张代云[1] 高云涛[1] 

机构地区：[1]云南民族大学化学与生物技术学院,云南昆明650031 [2]云南省西双版纳州食品药品检验所,云南景洪666100

出　　处：《光谱学与光谱分析》2009年第12期3416-3419,共4页Spectroscopy and Spectral Analysis

基　　金：云南省社会发展科技计划项目(2007B148M);国家民委教育部共建民族药资源化学重点实验室开放基金项目(MJY07012)资助

摘　　要：照传统煎煮法对中药灯台叶中铜、锌、铁、镁、钙、铬、锰和镉8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8种元素进行测定。结果显示,灯台叶中8种元素的总提取率为9.84%～89.07%,浸留比为10.96%～903.4%,悬浮态颗粒吸附率为3.44%～23.37%。该法对各元素的加标回收率为94.5%～111.6%;相对标准偏差在0.29%～2.47%之间,测定结果的精密度和准确度令人满意。The eight elements,Cu,Zn,Fe,Mg,Ca,Cr,Mn and Cd,in the leaves of Alstonia scholaris were extracted based on traditional analytical flowchart program and separated into water-soluble state and suspension state by micro porous filtering film.The water-soluble state was divided into organic state and inorganic state based on macro porous adsorption resin.The elements were detected by flame atomic adsorption spectrometry（FAAS）.The results show that the extractive rates of the elements were in the range of 9.84%-89.07%,and the immersion-residue ratio in the range of 10.96%-903.4%.Adsorption ration of suspension state was in the range of 3.44%-23.37%.The recovery ratios by standard addition were in the range of 94.5%-111.6%,and the relative standard deviations（RSD）were in the range of 0.29%-2.47%.The precision and accuracy of determining results are satisfactory.

关 键 词：灯台叶 金属元素 火焰原子吸收光谱法 形态分析 

分 类 号：O657.3[理学—分析化学]