Determination of Six Metal Elements in Plant Bupleurum Scorzonerifolium Willd. by Flame Atomic Absorption Spectrophotometry(FAAS)
XUE Guo-qing1, LIU Qing2, HAN Xiao-mei3, HAN Yu-qi1, WAN Yin-sheng1
1. Department of Chemistry, Hexi University, Zhangye 734000, China 2. The 4th Geoteam of the Gansu Nonfero Geoexploration Bureau, Zhangye 734000, China 3. Zhangye Medical College, Zhangye 734000, China
Abstract：The objective in this paper was to determine the amount of metal elements in the Plant Bupleurum scorzonerifolium Willd. by flame atomic absorption spectrophotometry(FAAS). FAAS method was established for the determination of Ca, Mg, Fe, Cu, Zn and Pb in the Plant Bupleurum scorzonerifolium Willd. after digestion with HNO3-HClO4(V∶V=4∶1) at 90-95 ℃ and at normal pressure. In the meantime, the optimum parameters of FAAS and the effects of solution medium on the results were studied. The analytical results of Ca, Mg, Fe, Cu and Zn were 5 588.9, 1 790.5, 869.3, 78.4, 44.3 μg·g-1 respectively, and Pb was not checked out in the samples. The results showed that the recovery of standard addition was 99.57%-102.10%, the relative standard deviation (n=9) was 0.18%-2.26%. The method is quick, simple and convenient，and the results are satisfactory.
Key words：FAAS;Plant Bupleurum scorzonerifolium Willd;Metal element
薛国庆1,刘青2,韩晓梅3, 韩玉琦1,万银生1 . 火焰原子吸收法测定栽培柴胡中六种金属元素含量的研究[J]. 光谱学与光谱分析, 2006, 26(06): 1173-1175.
XUE Guo-qing1, LIU Qing2, HAN Xiao-mei3, HAN Yu-qi1, WAN Yin-sheng1 . Determination of Six Metal Elements in Plant Bupleurum Scorzonerifolium Willd. by Flame Atomic Absorption Spectrophotometry(FAAS) . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(06): 1173-1175.
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