微波消解-电感耦合等离子体质谱(ICP-MS)法快速测定植物源性食品中稀土元素  

Determination of rare earth elements in plant food by microwave digestion inductively coupled plasma-MS spectrometry

作　　者：戴骐[1] 吴艳燕[1] 林晓娜[1] 

机构地区：[1]浙江省检验检疫科学技术研究院,浙江省食品安全重点实验室,杭州310012

出　　处：《食品科技》2011年第12期283-286,290,共5页Food Science and Technology

基　　金：浙江省国境安全检验检疫科技创新服务平台项目(2006C17014)

摘　　要：建立了微波消解电感耦合等离子体质谱(ICP-MS)测定植物源性食品中稀土元素45Sc、89Y、139La、140Ce、141Pr、146Nd、147Sm、153Eu、157Gd、159Tb、163Dy、165Ho、166Er、169Tm、172Yb、175Lu含量的分析方法。样品经微波消解后,以101Ru、115In、185Re为内标元素,ICP-MS定量分析,对3种不同基质的植物源性食品进行了测定。各元素的检出限分别在0.56～16ng/L之间;线性良好,线性相关系数均r≥0.999;精密度RSD<7.0%;回收率在82%～112%。对不同类型的植物源性食品进行测定,结果满意。A method for determination of 45Sc,89Y,139La,140Ce,141Pr,146Nd,147Sm,153Eu,157Gd,159Tb,163Dy,165Ho,166Er,169Tm,172Yb,175Lu in plant food by ICP-MS was established.These elements were detected simultaneously after the samples digested by microwave digestion with 101Ru,115In,185Re as internal standard elements.The detection limits of these elements range from 0.56 ng/L to 16 ng/L,linear correlation r≥0.999.The precision was RSD7.0%,and recoveries of samples were of the range from 82% to 112%.The results were fine in different kinds of plant food.

关 键 词：微波消解 ICP-MS 植物源性食品 稀土元素 

分 类 号：TS207.3[轻工技术与工程—食品科学]