Determination of Nine Trace Elements in Dioscorea Opposita Thumb by Flame Atomic Absorption Spectrophotometry
ZHANG Wei1, ZHANG Zhuo-yong1*, SHI Yan-zhi1, FAN Guo-qiang2
1. Department of Chemistry, Resources Environment and GIS Key Lab of Beijing, Capital Normal University, Beijing 100037, China 2. Research Institute, Tongrentang Group Co. Ltd.，Beijing 100011, China
Abstract：The contents of the potassium, calcium, sodium, magnesium, copper, zinc, iron, manganese, strontium and nickel in Dioscorea opposita thumb were determined. The relative standard deviation(RSD) of the first eight contents is 0.43%, 1.10％, 4.41％, 0.68％，1.44％，1.88％，1.29％ and 0.03％ respectively, and the percentage recovery is 90.0%-111.0%. The method is convenient and accurate. It can be used to determine the trace elements simultaneousy in Dioscorea opposita thumb.
Key words：Flame atomic absorption spectrophotometry;Chinese herbal medicine;Dioscorea opposita thumb;Trace element
张 薇1,张卓勇1*,施燕支1,范国强2 . 火焰原子吸收光谱法测定山药中多种微量元素[J]. 光谱学与光谱分析, 2006, 26(05): 963-965.
ZHANG Wei1, ZHANG Zhuo-yong1*, SHI Yan-zhi1, FAN Guo-qiang2 . Determination of Nine Trace Elements in Dioscorea Opposita Thumb by Flame Atomic Absorption Spectrophotometry . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(05): 963-965.
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