【摘要】 本文采用ICP-MS法对成人脏器样品中痕量稀土元素进行了研究,选择了测定的最佳仪器参数,检查了测定中的各种干扰和影响;用镍（Re）为内标元素补偿基体抑制效应和灵敏度的漂移.方法对稀土元素各分量的检出限为0.005—0.026ng·ml^-1,标准回收率为92.9—111.3%,精密度为0.96—3.07%.在严格分析质量控制的基础上用混合酸消解样品,不须分离富集,直接对成人的心、脾、肝、肾、肺、肌肉中15种稀土元素进行测定.更多还原

【Abstract】 Inducitively coupled plasma mass spectrometry(ICP/MS)is a new technology in the field of inorganic analysis. It has the advantages of quickness,high sensitivity,simplicity of spectra and capability of simultaneous qualitative and quantitative analysis of multi- elements (including isotopes) in one samples. This paper described the study of trace rare-earth elements of adult viscera by ICP-MS. The optimum instrument parameters and examination of factors causing insterfe-rences and effects have selected. Re is used as an internal standard element to compensate for matrix inhibition effect and sensitivity drift. Detection limits for 15 rare-earth elements are 0. 005-0. 02ng · ml-1. Recoveries of standard addition are 92. 9- 111. 3%. Precisions are 0. 96-3. 07% on the basis of strict quality control are digested by mixed acid(HNO3+HClO3)and measured directly samples of adult lung, heart, liver, spleen, kidney and muscle for 15 rare-earth elements without separation and enrichment procedures;更多还原