电感耦合等离子体质谱法分析水产品中12种元素  

Analysis of 12 elements in aquatic products by ICP-MS

作　　者：樊祥[1] 周瑶[1] 陈迪[1] 张润何[1] 曲栗[1] 曹晨[1] 

机构地区：[1]上海出入境检验检疫局动植物与食品检验检疫技术中心,上海200135

出　　处：《分析试验室》2013年第5期91-95,共5页Chinese Journal of Analysis Laboratory

摘　　要：建立微波消解样品,电感耦合等离子体质谱法动态反应池模式对水产品中铅、铬、镉、铜、锌、砷、硒、锡、钾、镁、铁、锰12种重金属及微量元素的分析方法。研究表明:优化仪器条件、选择不受干扰的质量数、引入反应气甲烷,可有效消除多原子离子干扰,在线加入内标可对方法准确定量。12种元素的检出限均低于质量浓度50.0μg/L,在质量浓度2.0～2000.0μg/L范围内呈良好的线性关系,各元素加标回收率在84%～114%之间,相对标准偏差(n=6)1.4%～8.8%之间,该方法适合水产品中多元素的同时分析,可用于水产品的质量控制和安全评价。A method was proposed in this paper for the determination of 12 kinds of heavy metals and trace elements Pb, Cr, Cd, Cu, Zn, As, Se, Sn, K, Mg, Fe and Mn in aquatic products by inductively coupled plasma mass spectrometry in dynamic reaction cell mode. The samples were pretreated by microwave digestion. The study showed that： the interference of polyatomic ions was effectively eliminated by optimized instrument conditions, selected the non-interrupting isotopes, leaded into the reaction gas of methane, and the method of online internal standard was accurate and quantitative. Detection limits for the 12 elements found were less than 50.0 μg/L, linear range was obtained between 2. 0 and 2000. 0 μg/L, with recoveries of 84% - 114% and RSDs（ n = 6） of 1.4% -8.8%. The method was suitable for simultaneous analysis of multi-elements in aquatic products and provided new scientific foundation for the quality control and safety assessment of aquatic products.

关 键 词：电感耦合等离子体质谱法(ICP-MS) 动态反应池 水产品 重金属 微量元素 

分 类 号：O657.63[理学—分析化学]