膜去溶进样高分辨等离子体质谱技术测定岩石样品中的17个镧系和锕系元素  

DETERMINATION OF RARE EARTH ELEMENTS URANIUM AND THORIUM IN ROCK SAMPLES BY HIGH RESOLUTION INDUCTIVELY COUPLED PLASMA-MASS SPECTROMETRY WITH MEMBRANE DESOLVATION

作　　者：郭冬发[1] 武朝辉[1] 裴玲云[1] 黄秋红[1] 李振涛[1] 

机构地区：[1]核工业北京地质研究院,北京100029

出　　处：《质谱学报》1999年第3期103-104,共2页Journal of Chinese Mass Spectrometry Society

摘　　要：This paper presents a method for determing of 17 elements including rare earth elements uranium and thorium in rock samples by high resolution ICP-MS with membrane desolvation. Samples are dissolved with high pure HNO,-HF-HCIO, digestion and introduced to HR- ICPMS by membrane desolvating microcefltric nebulizer introduction system (MCN-6000). The system can diminish the formation of multi-atom ions that is one of the most interferences in ICP-MS, and increase the nebulization efficiency of sample. the sensitivities of The elements are increased about 10 times compared to common nebulizer. The determination limits and relative standard deviations for solid sample depending on different elements are bewteen 0.07-1.3 ppt and 0.26%-7%, respectively. The national geological reference materials were determined and the accuracy is better than 10% corresponding to the certified values.This paper presents a method for determing of 17 elements including rare earth elements uranium and thorium in rock samples by high resolution ICP-MS with membrane desolvation. Samples are dissolved with high pure HNO,-HF-HCIO, digestion and introduced to HR- ICPMS by membrane desolvating microcefltric nebulizer introduction system (MCN-6000). The system can diminish the formation of multi-atom ions that is one of the most interferences in ICP-MS, and increase the nebulization efficiency of sample. the sensitivities of The elements are increased about 10 times compared to common nebulizer. The determination limits and relative standard deviations for solid sample depending on different elements are bewteen 0.07-1.3 ppt and 0.26%-7%, respectively. The national geological reference materials were determined and the accuracy is better than 10% corresponding to the certified values.

关 键 词：等离体质谱 岩石样 镧系元素 锕系元素 测定 

分 类 号：P585.3[天文地球—岩石学]