荧光分析中铁镍锌对铜K_α射线强度的影响  

Study on the influence degree of Fe/Ni/Zn to Cu by using EDXRF

作　　者：李哲[1] 庹先国[1,2] 杨剑波[1,2] 黄连美[2] 刘春来[2] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059 [2]成都理工大学地球探测与信息技术教育部重点实验室,成都610059

出　　处：《分析试验室》2010年第11期9-14,共6页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金(40974065);四川省科技支撑计划(2008GZ0040;2008GZ0197);"核废物与环境安全"国防重点学科实验室开放基金(09zxsk07)资助

摘　　要：能量色散X荧光分析(EDXRF)过程中,存在吸收增强效应影响分析准确性的问题。利用EDXRF测量Fe、Ni、Zn三种元素与Cu的六组伪二元系样品,根据实验结果对元素间的影响特征和影响程度进行了分析。并利用La-chance-Trail算法得到三组元素间的影响因子数值,Cu和Fe以及Cu和Zn之间的影响效应随元素含量变化较明显,分别在0.38～0.70和0.43～0.65之间,Cu和Ni之间的影响效应不明显。对Cu-Zn二元系中Cu含量实际计算结果相对误差均在5%以内。During EDXRF analysis procedure,absorption and enhancement effect may affect the analysis accuracy.Six (bogus)duality system samples of iron,nickel,zinc with copper were measured by EDXRF,the influence character and degree between elements has also been analyzed in this paper.Lachance-Trail algorithm was adopted here to obtain influence coefficient,the influence effect between Cu and Fe,as well as Cu and Zn are more obviously along with the change of elements content,and they are 0.38～0.70 and0.43～0.65,respectively.While the effect between Cu and Ni is not so obviously.Relative error of Cu content in Cu-Zn duality samples are all under 5%,which is to say that the method can meet the need of industry production process by using EDXRF technique to get copper content.

关 键 词：EDXRF分析 元素间效应 Lachance-Trail校正算法 

分 类 号：X830[环境科学与工程—环境工程]