微波消解与封闭消解对植物中15种稀土元素KED-ICP-MS法测定的影响  

Influence of microwave digestion and sealed vessel digestion on the determination of 15 rare earth elements in plants by KED-ICP-MS

作　　者：袁秀雪 胡萍 乔爱香 江冶[1,2] 曹磊 赵越[1,2] Yuan Xiuxue;Hu Ping;Qiao Aixiang;Jiang Ye;Cao Lei;Zhao Yue(Technology Innovation Center of Ecological Monitoring and Restoration Project on Land(Arable),Ministry of Natural Resources,Nanjing 210018,Jiangsu,China;Geological Survey of Jiangsu Province,Nanjing 210018,Jiangsu,China)

机构地区：[1]自然资源部国土(耕地)生态监测与修复工程技术创新中心,江苏南京210018 [2]江苏省地质调查研究院,江苏南京210018

出　　处：《地质学刊》2024年第2期219-228,共10页Journal of Geology

基　　金：自然资源部国土(耕地)生态监测与修复工程技术创新中心开放课题“土壤-水体系中典型重金属元素原位监测技术研究”(GTST2021-010)。

摘　　要：使用微波消解法和封闭消解法对植物样品进行处理,并直接用ICP-MS法同时测定样品中的15种稀土元素。探索采用动能歧视(KED)技术下的最佳工作条件,并以Rh和Ir作内标元素校正非质谱干扰。国家一级生物标准物质测试结果表明,封闭法消解植物样品具有灵敏度高、重现性好等优点,微波消解能满足植物样品稀土元素快速测定的要求,因此两种消解方法都能为相应的研究工作提供可靠的基础数据。实际分析应用证明,KED-ICP-MS法具有干扰少、精密度好、准确度高等优点,适用于植物样品中15种稀土元素的快速测定。The microwave digestion method and sealed vessel digestion method were studied for the simultaneous determination of 15 rare earth elements by ICP-MS.The optimal working conditions under kinetic energy discrimination(KED)technique are explored,and Rh and Ir are used as internal standard elements to correct non-mass spectrum interference.The test results of national first-class biological standard material indicate that the sealed vessel method of digesting plant samples has the advantages of high sensitivity and good reproducibility.However,microwave digestion can also meet the requirements of rapid determination of rare earth elements in plant samples.Therefore,both methods can provide reliable basic data for the corresponding research.It is proved that KED-ICP-MS has the advantages of less interference,good precision and high accuracy,which is suitable for the rapid determination of 15 rare earth elements in plant samples.

关 键 词：微波消解 封闭消解 KED 稀土元素 植物样品 

分 类 号：P575.4[天文地球—矿物学]