微波消解-原子荧光法同时测定北虫草中砷和硒  

Retemination of arsenic and selenium in north cordyceps by microwave digest-atom fluorescence spectrometry

作　　者：钱凯[1] 余明池[1] 

机构地区：[1]安徽省铜陵市疾病预防控制中心,安徽铜陵244000

出　　处：《中国卫生检验杂志》2008年第12期2543-2545,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的：探讨建立原子荧光法同时测定北虫草中砷和硒的方法。方法：用微波消解处理样品及加标样品,用AFS-920型双道原子荧光光度计直接测定。结果：在最佳实验条件下,砷和硒的最低检出限为0.0926μg/L和0.1222μg/L;砷和硒的RSD分别为0.99%～1.06%和0.66%～0.71%;回收率分别为砷97.3%～100.7%,硒102.3%～103.4%。结论：该方法具有简便,快速,灵敏度、准确度高,干扰少等优点。Objective：To develop a method for simultancous determination of arsenic and selenium in north cordyceps by atomic fluorescence spectrometry.Methods：Using microwave digestion,the samples and standard samples were detected with AFS-920 dual-channel direct determination of atomic fluorescence spectrometer.Results：In the best condition,the limit of detection for arsenic and selenium was 0.0926 μg/L and 0.1222 μg/L.The coefficient of variation for sample detection was 0.99%～1.06% and 0.66%～0.71%,respectively.The recovery rates of arsenic and selenium were 97.3%～100.7% and 102.3%～103.4%.Conclusion：The method is simple,rapid and of high sensitive and accuracy,less interference.

关 键 词：微波消解 氢化物原子荧光法 北虫草 砷 硒 

分 类 号：O657.31[理学—分析化学]