原子荧光法测定干酵母中微量砷和汞  

Determination As and Hg in dry Yeast Powder by Atomic Fluorescence Spectrometry

作　　者：杨小丽[1] 邵鑫[1] 李小丹[1] 程先忠[1] 

机构地区：[1]宜昌地质矿产研究所,湖北省宜昌市443003

出　　处：《光谱实验室》2005年第2期350-353,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：氢化物 -原子荧光测定干酵母中微量的砷和汞 ,探讨了样品的消解条件 ,仪器工作参数 ,硼氢化钾浓度对测定的影响。该方法简便快速、结果准确、重现性好。加标回收率 As:98.99%,Hg:98.32 %。相对标准偏差 As:0 .1 1 %,Hg:0 .0 3%。The amounts of As and Hg in the dry yeast powder were determined by hydride generation-atomic fluorescence spectrometry.The degestion condition,the apparatus parameters,KBH_4 content were optimized. The method is simple and rapid with satisfactory results and good reproducibility.The average recovery rates are 98.99%,and 98.32% for As and Hg with the relative standard deviations of 0.11%,and 0.03%,respectively.

关 键 词：干酵母 荧光法测定 原子 微量砷 相对标准偏差 汞 加标回收率 荧光测定 工作参数 氢化物 钾浓度 硼氢化 重现性 As Hg 

分 类 号：O562.1[理学—原子与分子物理] TS264.22[理学—物理]