波长色散X射线荧光光谱法测定长石主次量组分  

Determination of Major and Minor Components in Feldspar Samples by Wavelength Dispersive-X-Ray Fluorescence Spectrometry

作　　者：蔡玉斌 金骏 翁杰 

机构地区：[1]国家建筑五金材料产品质量监督检验中心,杭州市九环路50号310019

出　　处：《光谱实验室》2013年第2期920-924,共5页Chinese Journal of Spectroscopy Laboratory

基　　金：浙江省质量技术监督局资助项目(编号:20100304)

摘　　要：采用高温熔融制样,X射线荧光光谱法同时测定长石中的SiO_2、Al_2O_3、CaO、MgO、Na_2O、K_2O、Fe_2O_3、TiO_2、Cr_2O_3等主次量元素。通过选用长石、叶腊石、高岭土及土壤等标准样品,并在标样中引入分析纯TiO_2、Cr_2O_3,解决了长石成分分析标准样品不足的问题。采用理论α系数和经验系数校正法克服了谱线重叠干扰和基体效应影响。测定长石各组分的相对标准偏(RSD,n=10)均小于5%,方法检出限为1.21—97.33μg/g,测定值与化学分析法结果吻合。A method for simultaneous determination of SiOz, Al2O3, CaO, MgO, Na2O, K2O, Fe2O3, TiO2 and Cr2O3 in feldspar was developed by X-ray fluorescence spectrometry with melted sample preparation. By using feldspar, pyrophyllite, kaolin and soil standard samples and introducing pure TiO2,Cr2O3 to standard samples,the problem that there are not enough standard samples for feldspar analysis was solved. The theoretical alpha coefficient and experienced coefficients correction method was used to overcome the spectral overlap interference and the matrix effect. The RSDs（n=10） of the method were less than 5% for all components. The detection limits were 1. 21-97.33μg/g,the obtained results are consistent with certified values.

关 键 词：长石 主次量成分 熔融法 波长色散X射线荧光光谱法 

分 类 号：O657.34[理学—分析化学]