Comparison of ICP-MS and Two Other Analytical Methods for Determination of Selenium Content in Cordyceps Militaris
WANG Ying1,TIE Mei3,KANG Ping-li4,Lü Yong-tong1,BEN Song-bin1,CHEN Chang-lan2*
1. School of Life Science, Liaoning University, Shenyang 110036, China 2. Department of Pharmaceutical Engineering, Liaoning University, Shenyang 110036, China 3. School of Environment Science, Liaoning University, Shenyang 110036, China 4. School of Chemistry, Liaoning University, Shenyang 110036, China
Abstract：Samples were digested by microwave digestion. The selenium content in selenium enriched Cordyceps militaris was determined by ICP-MS method, HPLC/fluorometric method, and 3,3-diaminobenzidine method separately. And the detection conditions, the lowest detection limit and the relative standard deviation (RSD) of the three determination methods were compared. The detection conditions of the three methods for the detection of selenium content in selenium enriched Cordyceps militaris were established. It was showed that the lowest detection limit of ICP-MS method, HPLC/fluorometric method, and 3,3-diaminobenzidine method was 0.260 7, 0.182 1 and 10.485 9 μg·L-1 respectively, and this means that the lowest detection limit of ICP-MS method was the lowest and that of 3,3-diaminobenzidine method was the highest. For the same sample the relative standard deviation (RSD) of ICP-MS method was the lowest and the RSD of 3,3-diaminobenzidine method was the highest. It was recommended that selenium content is determined by ICP-MS and HPLC/fluorometric method when the selenium in the sample is very low and by 3,3-diaminobenzidine method when the content is rather high.
王莹1,铁梅3,康平利4,吕永通1,贲松彬1,陈长兰2*. ICP-MS等三种测定蛹虫草硒含量方法的比较[J]. 光谱学与光谱分析, 2009, 29(03): 815-818.
WANG Ying1,TIE Mei3,KANG Ping-li4,Lü Yong-tong1,BEN Song-bin1,CHEN Chang-lan2* . Comparison of ICP-MS and Two Other Analytical Methods for Determination of Selenium Content in Cordyceps Militaris. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(03): 815-818.
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