摘要
目的：建立ICP-MS测定粮食中磷化物的分析方法。方法：样品中的磷化物经前处理后转化为H3PO4,然后用ICP-MS进行分析。结果：仪器的检出限优于0.002 mg/kg,精密度优于1.5%,回收率为93.0%～95.8%,对6个实际样品的分析结果和国标法没有显著差别。结论：可以采用ICP-MS测定粮食中的磷化物,整个方法检出限低,简单、快速和准确,适用于实验室日常分析。
Objective：To develop a method to determine phosphide in foodstuff by inductively coupled plasma mass spectrometry.Methods：Before being analyzed by inductively coupled plasma mass spectrometry,phosphide in foodstuff was transformed to H3PO4 by sample preparetion.Results：The detection limit was higher than 0.002 mg/kg,the RSD over 1.5%;recoveries were 93.0%～95.8%.The results of analyzing practical samples was the same as those by using national standard method.Conclusion：This method is simple,sensitive and accurate,and can determinate phosphide in foodstuff.
出处
《中国卫生检验杂志》
CAS
2009年第3期574-575,593,共3页
Chinese Journal of Health Laboratory Technology
基金
广东省医学科研课题(A2008571)
广州市医学科研课题(2007-YB-122
2007-YB-123)
关键词
ICP-MS
粮食
磷化物
Inductively coupled plasma mass spectrometry
Foodstruff
Phosphide
