Microwave Digestion Sample Hydride Generation-Atomic Fluorescence Spectrometry Determines Trace Selenium of Mogroside  

作　　者：Xiujing Zhang 

机构地区：[1]Chemistry and Chemical Engineering Faculty in Heze College, Heze 274015, Shandong, China

出　　处：《International Journal of Technology Management》2013年第7期128-130,共3页国际技术管理

摘　　要：0.2000g mogroside sample is digested by 7.0ml nitric acid and 3.0ml hydrogen peroxide, and generated by coprecipitation enrichment hydride - atomic fluorescence spectrometry determines trace selenium in it. Under optimum experiment conditions, a standard curve was produced using selenium standard solution, the linear equation is Ise=2890.6c＋0.0012,compared wish the linear relaticnship is not by coprecipitation direct determination of standard series Ise=82.56c＋0.0018 Selenium detection sensitivity was increased by 35.01 times,the correlation coefficient of obtained linear regression equation is 0.9996, the detection limit is 0.0012~tg/L and the relative standard deviation is 0.76% （n=5）. Containing 0.1808pg.g-1 Se Luo Han Shen samples. Based on mogroside sample, add a certain of standard solution to do recovery experiment, the obtained recovery rate is in 95.8%-103.6% and the result is satisfactory.

关 键 词：Hydride Generation-Atomic Fluorescence Spectrometry MOGROSIDE SELENIUM 

分 类 号：O657.31[理学—分析化学] TS255.1[理学—化学]