X射线荧光光谱法测定白云石中12种元素的含量  

XRFS Determination of 12 Elements in Dolomite

作　　者：孟德安 马慧侠 

机构地区：[1]郑州海赛高技术陶瓷有限责任公司,郑州450041 [2]中国铝业股份公司郑州研究院,郑州450041

出　　处：《理化检验（化学分册）》2014年第1期76-79,共4页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：采用X射线荧光光谱法测定白云石中钠、镁、铝、硅、磷、硫、钾、钙、锰、铁、钛、锌等12种元素的含量.样品以四硼酸锂和偏硼酸锂为熔剂和溴化锂为脱模剂于1 050℃熔融,样片用于X射线荧光光谱分析.以GBW 07114、GBW 07216A、GBW 07217A、YSBC 11703-1995、YSBC28722-1993、YSBC 28723-1993等标准物质为基础制作工作曲线.优化了各元素的基体校正数学模型.对白云石样品重复测定11次,测得其相对标准偏差(n=11)在0.2％～7.3％之间.方法用于白云石标准样品的分析,所得结果与认定值相符.XRFS was applied to the determination of 12 elements(i.e.Na,Mg,Al,Si,P,S,K,Ca,Mn,Fe,Ti and Zn) in dolomite.The sample was fused at 1 050 C using Li2B4O7 and LiBO2 as flux,and LiBr as demoulding agent.The disc shaped sample was used for XRFS analysis.Working curve was prepared with 6 CRM'sof GBW07114,GBW 07216A,GBW 07217A,YSBC 11703-1995,YSBC 28722-1993 and YSBC 28723-1993.The mathematical models of matrix correction for the 12 elements were optimized.Values of RSD's (n=11) were found in the range of 0.2％-7.3％.The proposed method was used in the analysis of a dolomite CRM,giving results in consistency with the certified values.

关 键 词：X射线荧光光谱法 组分元素 白云石 

分 类 号：O657.34[理学—分析化学] TQ132.2[理学—化学]