洋葱中重金属分布的ICP-MS分析  

Determination of Heavy Metals in Onion Skin and Pulp by ICP-MS

作　　者：侯冬岩[1] 刘俊会[2] 回瑞华[1] 李红[1] 华蕾[2] 

机构地区：[1]鞍山师范学院化学系,辽宁鞍山114007 [2]国家农业深加工产品质量监督检验中心,吉林长春130002

出　　处：《质谱学报》2009年第4期213-215,共3页Journal of Chinese Mass Spectrometry Society

基　　金：辽宁省教育厅科学技术基金课题(20331079)资助

摘　　要：采用电感耦合等离子体质谱法测定洋葱中重金属的分布,用硝酸-过氧化氢作消解液,微波消解法处理样品,ICP-MS法测定洋葱皮和肉中砷、铅、汞3种重金属元素的含量。测定结果的相对标准偏差RSD<5.1%,加标回收率为91.1%～104.9%,检出限为0.0072～0.087ng.g-1。该方法具有操作简便,快速,灵敏度高,准确度好和多种元素同时测定等优点。Heavy metals in onion skin and pulp were studied by ICP-MS. The samples were digested by mierowave-assistedly with nitric acid-hydrogen peroxide. The contents of As, Pb and Hg in onion skin and pulp were measured by ICP-MS. The RSD is less than 5.10% and the recoveries are in the range of 91. 1%-104. 9%. The determination of limits are 0. 007 2-0. 087 ng · g^-1 This method is fast, stable and accurate. It is suitable for determination of some heavy metals in onion skin and pulp.

关 键 词：电感耦合等离子体-质谱 洋葱 重金属 

分 类 号：O657.63[理学—分析化学]