0.500 0 g样品经硝酸3 mL、过氧化氢2 mL消解后，采用电感耦合等离子体质谱法同时测定样品溶液中Na、Mg、Ca、Al、Cu、Zn、Fe、Mn、Se、Pb、Cd、As、Hg和Cr的含量。采用0.5%（体积分数）硝酸的基体酸度增强分析元素的信号强度；在两次测试之间用100 μg·L^-1 Au-5%（体积分数）硝酸溶液清洗仪器，降低Hg的吸附效应；利用甲烷碰撞动态反应池技术消除了分析过程中的质谱干扰，选择Sc、Y、In、Bi为内标元素校正基体效应。14种元素的质量浓度在一定范围内与信号强度呈线性关系，检出限（3s）在0.003~0.039 μg·L^-1之间。方法用于分析国家标准物质GBW 10027，各元素测定值与认定值相符，测定值的相对标准偏差（n=6）在1.6%~14%之间。

The sample (0.500 0 g) was digested with 3 mL of nitic acid and 2 mL of hydrogen peroxide, and Na, Mg, Ca, Al, Cu, Zn, Fe, Mn, Se, Pb, Cd, As, Hg, Cr in the sample solution were determined by ICP-MS. Acidity of φ 0.5% HNO₃ of the sample solution was adopted to enhance signal intensities of the 14 elements. The instrument was washed with 100 μg·L^-1 Au in φ 5% HNO₃ solution between 2 determinations to lower the adsorption effect of Hg. Mass spectral interference was eliminated using DRC mode with CH₄ as reaction gas. Sc, Y, In and Bi were selected as the internal standards to correct matrix effect. Linear relationships were found between signal intensities and mass concentrations of the 14 elements in definite ranges, with detection limits (3s) in the range of 0.003-0.039 μg·L^-1. The method was used to analyze a CRM numbered GBW 10027, giving determination values of 14 elements in consistency with the certified values and RSDs (n=6) in the range of 1.6%-14%.