微波消解-电感耦合等离子体质谱法测定油茶籽油中的5种重金属元素  

Determination of Five Heavy Metals in Camellia Seed Oil by Microwave Digestion-ICP-MS

作　　者：倪张林[1] 汤富彬[1] 屈明华[1] 刘毅华[1] 沈丹玉[1] 

机构地区：[1]中国林业科学研究院亚热带林业研究所,国家林业局经济林产品质量检验检测中心(杭州),浙江富阳311400

出　　处：《食品科学》2013年第4期165-167,共3页Food Science

基　　金：中央级公益性科研院所基本科研业务费专项(RISF6151)

摘　　要：建立微波消解-电感耦合等离子体质谱法测定油茶籽油中的Pb、Cd、Cr、Cu、As五种重金属元素的方法。优化微波消解条件和仪器测定条件,选择同位素187Re、103Rh、45Sc作为内标元素来校正基体带来的干扰。方法的检出限在0.36～1.64μg/kg,加标回收率在84%～111%之间,精密度RSD在1.6%～7.6%(n=5)之间。采用该方法对茶叶标准样品(GBW10016)和苹果标准样品(GBW10019)进行验证,测定值均在保证值范围内。本方法具有快速、准确、可靠、灵敏度高。A method was established to for the analysis of Pb, Cd, Cr, Cu and As in camellia seed oil by using ICP-MS. The instrumental parameters and microwave digestion condition were optimized and the internal standard of 187Re, 103Rh and 45Sc was applied to correct for correct for matrix interferences. The detection limits of these 5 elements were 0.36-1.64μg/kg. The addition standard recovery was 84%--111%, and the RSD was 1.6%-7.6% （n=5） for 5 elements. The accuracy of the method was evaluated by the analysis of corresponding trace heavy metal elements in standard reference material （GBW10016 and GBWl0019）. The established method was characterized with rapidness, high precision, accuracy and low limits of detection.

关 键 词：微波消解 电感耦合等离子体质谱法 油茶籽油 重金属 

分 类 号：TS201.2[轻工技术与工程—食品科学]