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

摘要: 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0.0013~0.063 μg/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。

Abstract: 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.