微波消化ICP-MS同时测定补钙食品中Pb、Cd、Cu和As的应用研究  

SIMULTANEOUS DETERMINATION OF Pb,Cd,Cu and A IN SUPPLEMENTARY CALCIUM FOOD BY MICROWAVE DIGESTION AND INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY

作　　者：彭荣飞[1] 黄聪[1] 于桂兰[1] 侯建荣[1] 

机构地区：[1]广州市疾病预防控制中心,广州510080

出　　处：《现代预防医学》2009年第22期4305-4307,共3页Modern Preventive Medicine

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)

摘　　要：[目的]建立ICP-MS同时测定补钙食品中Pb、Cd、Cu和As的分析方法。[方法]样品经微波消化后直接用ICP-MS进行分析。[结果]整个方法的检出限为0.002～0.015mg/kg,可以满足测定的要求,精密度优于3.3%,回收率为95.6%～105%,对2个标准参考物质的分析结果令人满意。[结论]可用ICP-MS同时测定补钙食品中Pb、Cd、Cu和As,整个方法具有简单、快速和准确的特点。[Objective] To develop a simultaneous determination method of Pb,Cd,Cu and As in supplementary calcium food by microwave digestion and inductively coupled plasma mass spectrometry.[Methods] After digesting by microwave digestion,samples were directly determined by inductively coupled plasma mass spectrometry.[Results] The detections of limit were at the range of 0.002-0.015mg /kg,the R.S.Ds were less than 3.3%,and recoveries were at the range of 95.6-105.The results of two references were satisfactory.[Conclusion] This method is simple,sensitive and accuracy,and can simultaneous determinate Pb,Cd,Cu and As in supplementary calcium food.

关 键 词：ICP-MS 补钙食品 元素 

分 类 号：R151-3[医药卫生—营养与食品卫生学]