电感耦合等离子体质谱法测定地质样品中稀散元素铬镓铟碲铊

Determination of Cr,Ga,In,Te and Tl in Geological Samples by Inductively Coupled Plasma-Mass Spectrometry

采用电感耦合等离子体质谱技术,研究了地质样品中稀散元素铬、镓、铟、碲、铊含量的质谱分析方法。研究确定了最佳测定酸度、干扰元素的校正方法,结果令人满意。方法检出限为0.001 3~0.063μg/g,精密度（RSD,n=11）为2.00%~4.87%,优于其他方法,具有较好的灵敏度。方法快速、简便,结果准确,可用于地质样品中稀散元素铬、镓、铟、碲、铊含量的分析,适用于批量样品的快速测定。

A method for the determination of Cr,Ga,In,Te and Tl in geological samples by inductively coupled plasma-mass spectrometry（ICP-MS） was developed.The sample dissolution conditions and instrument measurement parameters were optimized through experiments.The detection limits of the method for these elements were in the range of 0.0013~0.063 μg/g with the precision of 2.00%~4.87%RSD（n=11）.The method provides the advantages of high sensitivity and accuracy,simple operation,high efficiency and is suitable for the routine analysis of scattered elements of Cr,Ga,In,Te and Tl in geological samples.