X射线荧光光谱法测定分子筛中La含量的研究  

Study determination of La in molecular sieve by X-ray fluorescence spectrometry

作　　者：杨一青 潘志爽 曹庚振 黄剑锋[1] 熊晓云 Yang Yiqing;Pan Zhishuang;Cao Gengzhen;Huang Jianfeng;Xiong Xiaoyun(Lanzhou Petrochemical Research Center,PetroChina Petrochemical Research Institute,Lanzhou 730060,China)

机构地区：[1]中国石油石油化工研究院兰州化工研究中心,甘肃兰州730060

出　　处：《炼油与化工》2022年第3期30-33,共4页Refining And Chemical Industry

基　　金：国家973项目(2010CB226904)。

摘　　要：采用粉末样品压片制样,用X射线荧光光谱仪对分子筛中稀土元素La进行测定。以离子交换法制备标准样品,通过充分研磨来克服粒度效应和矿物效应。文中主要讨论了吸收—增强效应对La元素分析的影响,使用经验系数法校正基体效应,得到的分析结果与化学方法一致,同时该方法测定范围宽,满足了科研和工业生产的需求。此方法不需要处理任何样品,是可以直接在仪器上测定的快速、准确、实用的分析方法。The rare earth element La in molecular sieve was determined by X-ray fluorescence spectrometer.Standard samples were prepared by ion exchange method to overcome the grain size effect and mineral effect by full grinding.This paper mainly discussed the effect of absorption-enhancement effect on the analysis of La element,used the empirical coefficient method to correct the matrix effect and obtained the analytical results consistent with those obtained by chemical method,which can meet the requirement for scientific and industrial production.This method was the analytical method that can determine La with a rapid,accurate and practical manner.

关 键 词：X射线荧光光谱法 LA 分子筛 

分 类 号：TQ426.95[化学工程]