电感耦合等离子体质谱检测牡蛎中17种无机元素的含量

摘 要：目的 本文建立了电感耦合等离子体质谱法（inductively coupled plasma mass spectrometry，ICP-MS）同时测定 Na、K、Mg、Ca、Al、Fe、Cr、Mn、Co、Cu、Zn、As、Se、Mo、Cd、Pb、Hg等 17 种无机元素的分析方法。方法 样品微波消解后，选用Rh为内标元素校正基体效应，用电感耦合等离子体质谱法进行分析。结果 结果表明：所测17种元素的相关系数均不小于 0.9990，加标回收率在 82.8%～111.0%之间，相对标准偏差RSD在1.0%～7.1%之间。结论 该方法快捷准确，可用于牡蛎多种无机元素同时检测。

Determination of 17 inorganic elementsin oyster by inductively coupled plasma mass spectrometry

Objective To establish a method for the simultaneous determination of 17 inorganic elements in oysters by inductively coupled plasma mass spectrometry (ICP-MS). Methods After microwave digestion, Rh was selected as the internal standard element to correct matrix effect, and ICP-MS was used for analysis. Results The correlation coefficients of the 17 elements were not less than 0.9990. The recoveries were 82.8%?111.0%, and the relative standard deviations (RSDs) were 1.0%?7.1%. Conclusion This method can be used to evaluate the mineral elements and safety of oyster due to its properties of rapid and accurate.