现场高灵敏度X射线荧光探矿技术的研究  

APPLICATION OF HIGH SENSITIVE FPXRF TECHNIQUE IN GEOLOGICAL PROSPECTING

作　　者：赖万昌[1] 葛良全[1] 吴永鹏[1] 林延畅[1] 肖刚毅[1] 

机构地区：[1]成都理工大学,成都610059

出　　处：《地质与勘探》2004年第1期60-63,共4页Geology and Exploration

基　　金：国家自然科学基金项目(编号:40274048);国土资源部地调项目(编号:20002010002116及编号:20012010083);国际原子能机构CRP项目(编号:IAEA11305/R0;R1)联合资助。

摘　　要：介绍了一种新型便携式高灵敏度X射线荧光仪的研制及其在地质勘查中的初步应用。仪器基于电致冷Si-PIN半导体X射线探测器和微机多道(2048道)谱仪系统,整机重4.2kg(探头重0.8kg)。以同位素源产生的X射线激发样品,对铜、锌、砷等元素的分析检出限为10×10-6g/g,适用于野外现场的天然岩石、土壤和水系沉积物的多元素含量的定量测定,以及工业原料、半成品、产品快速分析。A high sensitive portable X-ray fluorescence analyzer and the application of FPXRF in geological prospecting are introduced. The analyzer is composed of a Si-PIN X-ray detector with thermo-electrical cooler, isotope sources and a 2048-channel MCA based on PC/104 computer. The analyzer is about 4.2 kg in weight, and 30 cm×28 cm×14 cm in size. The analytical detection limits are about 10×10^(-6)g/g for Cu, Zn, As and other mineral elements. This analyzer can be used to in-situ determination on multi-element concentration of natural rocks, soil and other mineral products.

关 键 词：现场X射线荧光技术 高灵敏度 地质勘探 定量测定 

分 类 号：P631.6[天文地球—地质矿产勘探]