高压密封罐消解原子荧光光谱法同时测定茶叶中硒和锡的研究  

SIMULTANEOUS DETERMINATION OF SELENIUM AND TIN IN TEA BY SEALING DIGESTION AFS-230E

作　　者：陆洋[1] 谭红[1] 谢锋[1] 张清海[1] 舒海霞[1] 

机构地区：[1]贵州科学院贵州省理化测试分析研究中心,贵州贵阳550002

出　　处：《贵州科学》2008年第2期39-43,共5页Guizhou Science

摘　　要：建立密封消解原子荧光光谱法同时测定茶叶中硒和锡的方法．对密封消解原子荧光光谱法同时测定硒和锡的各参数条件进行研究．在最佳测试条件下，硒方法检出限为0．32μg／L，测定相对标准偏差为1．8％，样品加标回收率为96．4％～98．8％；锡方法检出限为0．30μg／L，测定相对标准偏差为3．5％，样品回收率为92．7％～102．0％．本法具有快速、准确、灵敏度高、精密度好等优点，用于茶叶中总硒和总锡的测定，结果满意．A method was established for simultaneous determination of selenium and tin in tea by sealing digestion AFS- 230E. Parameters of atomic fluorescence spectrometry for the method were studied. Under the optimum testing conditions, the detection limit of selenium is 0.32μg/L with RSD 1.8% and sample recovery rate of 96.4% ~ 98, 8%. And the detection limit of tin is 0. 30μg/L with RSD 3, 5% and sample recovery rate of 92.7% -102.0%. The method is rapid, convenient, accurate, sensitive and suitable for determination of selenium and tin in tea.

关 键 词：硒 锡 高压密封罐消解 原子荧光光谱法 茶叶 

分 类 号：S571.1[农业科学—茶叶生产加工] O613.52[农业科学—作物学]