26 462-465 食品安全与检测 4-4 微波消解-电感耦合等离子体质谱法测定杏鲍菇中的24种元素.pdf

现代食品科技 Modern Food Science and Technology 2012, Vol.28, No.4 微波消解-电感耦合等离子体质谱法 测定杏鲍菇中的24 种元素 1 1 2 1 2 1 罗晓茵 ，郭新东 ，柳华春 ，叶嘉荣 ，郭伟鹏 ，吴玉銮 （1.广州市质量监督检验研究院 国家加工食品质量监督检验中心(广州)，广东广州 510110） （2.广东省微生物研究所，广东广州 510070） 摘要：建立了杏鲍菇中24种元素电感耦合等离子体质谱 （ICP-MS）测定的分析方法。样品经微波消解后用ICP-MS进行分析， 用Sc，Ge，Y，In，Tb，Bi作内标校正基体干扰和漂移。24种元素加标回收率在90.1%~118.9%之间；工作曲线相关系数均大于0.999 ； 相对标准偏差均在0.6~5.6%之内。方法具有简单、快速和准确的特点，是一种简便、快速分析杏鲍菇中无机元素的方法。 关键词：金属元素；杏鲍菇；微波消解；电感耦合等离子体质谱法 文章篇号：1673-9078(2012)4-462-465 Determination of 24 Metal Elements in Pleurotus eryngii Quei by Inductively Coupled Plasma Mass Spectrometry with Microwave Digestion for Sample Preparation 1 1 2 1 2 1 LUO Xiao-yin , GUO Xin-dong , LIU Hua-chun , YE Jia-rong , GUO Wei-peng , WU Yu-luan (1.Guangzhou Quality Supervision and Testing Institute, National Centre for Quality Supervision and Testing of Processed Food (Guangzhou), Guangzhou 510110, China) (2.Guangdong Institute of Microbiology, Guangzhou 510070, China) Abstract: A method was established to determination of 24 metal elements in Pleurotus eryngii Quei. After microwave digestion, the samples were determined directly by inductively coupled plasma mass spectrometry which used Sc, Ge, Y, In , Tb, Bi as internal standard to correct matrix interference and signal drifting. The quality of the results was proved by the recovery experiments (ranging from 90.1% to 118.9%). The linear correlative coefficient for all elements was higher than 0.999. The relative standard deviations varied from 0.6% to 5 .6% (n =