摘要:
本文研究建立ICP-AES测定SiO2标准物质中杂质元素含量的方法.钛、钙、镁、钠、铁、钻、铝、铜、锰、铅、铬、镍的质量浓度分别在0.1~1.5,0.05~1.0,0.05~1.0,0.05 ~ 1.0,0.05~2.0,0.1~1.0,0.05~2.5,0.1~1.0,0.1~1.0,0.1~1.0,0.05~1.0,0.05 ~ 1.0mg·L1范围内与其光谱强度线性相关,相关系数均大于0.999;方法检出限分别为0.005,0.05,0.015,0.2,0.05,0.05,0.15,0.015,0.005,0.15,0.02,0.05mg· L-1,加标回收率均在90.0% ~ 115.0%之间,测定结果的相对标准偏差均小于5%(n=6).表明此方法准确度和精密度以及重复性,可用于SiO2标准物质中杂质的含量测定,也可用于高纯石英原料及制品的杂质含量分析.