熟肉食品中7种有害重金属元素的快速质谱分析
Rapid Mass Spectrometry of Seven Kinds of Heavy Metal Elements in Cooked Meats
梁书怀 1蒙华毅 1吴祖军 1江永红1
作者信息
- 1. 广西壮族自治区疾病预防控制中心，广西南宁530028
- 折叠
摘要
[目的]为评价熟肉食品的安全性提供参考。[方法]采用电感耦合等离子体质谱法（ICP－MS）检测熟肉食品中铅、镉、砷、铬、镍、铊、汞的含量，掌握7种有害元素的含量状况。样品经硝酸－过氧化氢体系高压消解后，以Ge、In、Bi、Sc为内标元素消除非质谱干扰，碰撞反应池技术消除质谱干扰，采用电感耦合等离子体质谱仪同时进行测定。[结果]在优化的最佳仪器工作参数下，各元素的检出限均可达ng／L级，各元素的相关系数均大于0．999。选用黄豆标准参考物质考察方法的可靠性，样品的测定结果均在标准值范围内。[结论]该方法适用于熟肉中有害重金属元素的快速检测。
Abstract
Objective] To detect the content of Pb, Cd, As, Cr, Ni and Hg contents in cooked meats by ICP-MS, to grasp the content status of these seven harmful elements, and to provide references for the evaluation of the safety of cooked meats.[Method] Sample were dissolved by HNO3 and H2 O2 .Ge, In, Bi and Sc were selected as the internal standard elements to overcome non-spectroscopic interference and helium was used as reaction gas to eliminate mass spectroscopic interference .Simultaneous determination was carried out by inductively coupled plas-ma mass spectrometry.[Result] Under the optimum condition, the detection limits could reach up to ng/L level, with elemental correlation coefficient over 0.999.The method was tested using national standard substance (soybean GBW10013) and the results were in good agree-ment with the recommended values.[Conclusion] This method is suitable for rapid determination of heavy elements in cooked meats.
关键词
熟肉食品/重金属元素/密闭高压消解/电感耦合等离子体质谱法Key words
Sealed high pressure digestion/Inductively coupled plasma mass spectrometry引用本文复制引用
基金项目
广西卫计委自筹经费科研课题(Z2014634)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据