XRF强度影响系数法测定地质样品的组分  

Measure the constituents of geological samples by XRF intensity influence coefficient method

作　　者：戴振麟[1] 葛良全[1] 程锋[1] 张庆贤[1] 

机构地区：[1]成都理工大学核技术与自动化工程学院,四川成都610059

出　　处：《核电子学与探测技术》2008年第2期425-429,共5页Nuclear Electronics & Detection Technology

基　　金：中国地质调查局地质调查项目(编号:1212010706501)

摘　　要：使用Si-PIN探测器和嵌入式计算机的便携式高能量分辨率X射线荧光(XRF)分析仪,建立影响系数法强度校正模型,对一些矿样(包括矿山中的原生矿)元素进行了测定,与化学分析结果相比较得出:矿样中的Fe元素含量在20%-55%之间的最大相对误差不超过4.74%;Cu元素含量在182ppm-2400ppm之间的最大相对误差不超过24.70%,在2400ppm-3600ppm之间的最大相对误差不超过7.46%;Zn元素含量在556ppm-3200ppm之间的最大相对误差不超过25.93%,在3200ppm-21600ppm之间最大相对误差不超过11.48%;Pb元素含量在5900ppm-204200ppm之间的最大相对误差不超过23.80%,在204200ppm-511200ppm之间的最大相对误差不超过13.79%。由此可见,该模型能够很好地克服各种基质成分基体效应的影响并且能够有效地指导矿山的选矿工作。The elements of some ore samples（including primary ores in the mine）have been measured by using the Si-PIN detector and the portable high energy resolution XRF analyzer with an embedded computer constituting the intensity correction model of influence coefficient method. By comparing to the result by chemical analysis, the conclusion could be made as follows： the maximal relative error of the content of the element Fe with the content between 20% to 55% is not more than 4.74%, the maximal relative error of the content of the element Cu with the content between 182ppm to 2400ppm is not more than 24. 70% and not more than 7.46% with the content between 2400ppm to 3600ppm, the maximal？？ relative error of the content of the element Zn with the content between 556ppm to 3200ppm is not more than 25. 93% and not more than 4.74% with the content between 3200ppm to 21600ppm, the maximal？？ relative error of the content of the element Pb with the content between 5900ppm to 204200ppm is not more than 23.80% and not more than 13. 79% with the content between 204200ppm to 511200ppm. In this way, this model could overcome the influence of matrix effect from base material components commendably and guide the work of mineral beneficiation in the mine effectively.

关 键 词：强度影响系数法 基体效应 地质样品 XRF 

分 类 号：O657.34[理学—分析化学]