Speciation Analysis of Eight Metal Elements in the Leaves of Alstonia Scholaris by Flame Atomic Adsorption Spectrometry
YE Yan-qing1, WU Na1, YANG Li-juan1, NIAN Xiao2, ZHANG Dai-yun1, GAO Yun-tao1
1. School of Chemistry and Biotechnology, Yunnan Nationalities University, Kunming 650031, China 2. Yunnan Xishuangbanna Institute of Food and Drug Control, Jinghong 666100, China
Abstract：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.
叶艳青1，吴 娜1，杨丽娟1，念 晓2，张代云1，高云涛1 . 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[J]. 光谱学与光谱分析, 2009, 29(12): 3416-3419.
YE Yan-qing1, WU Na1, YANG Li-juan1, NIAN Xiao2, ZHANG Dai-yun1, GAO Yun-tao1 . Speciation Analysis of Eight Metal Elements in the Leaves of Alstonia Scholaris by Flame Atomic Adsorption Spectrometry . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(12): 3416-3419.
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