ICP-MS法测定微(痕)量金方法的改进  

Improvement of the Determination of Trace Gold in Geological Samples by ICP-MS

作　　者：任青 王同为 Ren Qing;Wang Tongwei(Xinjiang University of Science and Technology,Xinjiang Korla 841000)

机构地区：[1]新疆科技学院,新疆库尔勒841000

出　　处：《化工时刊》2022年第8期28-30,共3页Chemical Industry Times

摘　　要：本文研究了硫脲浓度对地质样品中痕量金测定的影响。硫脲沉积会降低ICP-MS使用寿命,影响测试准确度。为解决这一问题,探讨了降低硫脲浓度的可行性,当硫脲浓度降至0.5 g/L时,相关系数r=0.9996,加标回收率:95~107%,结果符合实验室相关的质控要求。故ICP-MS改进方法能够有效解决微痕量金分析中硫脲沉积问题,提高测试效率,延长仪器使用寿命。Discuss the the influence of thiourea concentration on the determination of trace gold in geological samples.The thiourea deposition interference could damage the ICP-MS and reduce test efficiency.In order to solve this problem,discussed the feasibility of reducing the thiourea concentration.And at 0.5 g/L thiourea,the correlation coefficient is 0.9996,and therecovery rate is 95%to 107%.Concluded that ICP-MS method could solve thiourea deposition interference,reduce the damage of ICP-MS and improve test efficiency.

关 键 词：硫脲浓度 泡塑吸附 电感耦合等离子体质谱法 微(痕)量金 

分 类 号：O657[理学—分析化学]