摘要
目的 :建立一种同时测定食品中微量砷和铅的方法。方法 :采用灰化法消解样品 ,氢化物原子荧光法同时测定食品中微量砷和铅。结果 :方法检出限砷和铅分别为 0 .30 μg/ L 和 0 .32 μg/ L;砷和铅的回收率分别为 85 .2 %～ 10 8%和89.7%～ 10 3.3% ;相对标准偏差分别为 2 .0 %～ 5 .1%和 3.2 %～ 5 .5 %。结论
Objectve:To establish a method for the determination of the trace amount of Pb and As in foods.Methods:Trace amount of Pb and AS in foods were determined simultaneously by HG-AFS after the samples were digested with dry ashing method.Results:The dection limits of this method were 0.30μg/L for As and 0.32μg/L for Pb respectively.The recoveries of As and Pb were 85.2%～108% and 89.7%～103.3%.The relative standard deviations for As and Pb were 2.0%～5.1% and 3.2%～5.5% respectively.Conclusion:The trace amounts of As and Pb in foods can be simultaneously determined by the HG-AFS.
出处
《现代预防医学》
CAS
2004年第2期192-193,共2页
Modern Preventive Medicine
