Measurement of 21 mineral elements in two Lomatogoniumby ICP-OES

YUAN Yuan-yuan;SUN Jing;WANG Yan-hua;ZHOU Yu-bi;YE Run-rong;DENG Juan;PENG Min;LU Xue-feng;Key Laboratory of Qinghai Tibet Plateau Biological Resources,Northwest Institute of Plateau Biology,Chinese Academy of Sciences;University of Chinese Academy of Sciences;Qinghai Environmental Monitoring Center Station;

Lomatogonium macranthum;;Lomatogonium rotatum;;mineral elements;;ICP-OES

【Objective】Measuring the mineral elements in two Lomatogoniumspecies by coupled plasma optical emission spectrometry(ICP-OES),the difference between the two species was compared to provide scientific basis for further development of Lomatogoniumresources.【Method】21mineral elements in two Lomalogoniumspecies were measured by ICP-OES using samples digested by nitric acid microwave.【Result】21mineral elements were detected in L.macranthum,while 18 elements in L.carinthiacumand Se,Mo and Cd cannot be detected.Content of Ca,Mg and Fe in the two species showed higher.The difference in the content of Co was maximum and Tl was minimum.The correlation coefficient of the linear equation was between 0.999 0and 1.0000.The detection limit was less than 0.004 0mg/kg.The recoveries rate was between 88%~106% with RSDranging from 0.20% to 4.31%.【Conclusion】ICP-RSD method showed good linear relationship,low detection limit,high sensitivity and can be used to measure mineral elements intwo Lomalogoniumspecies.The two species differed in mineral elements.