离子色谱法测定玻璃中的氧化锂

Determination of Lithium Oxide in Glass by Ion Chromatography

通过实验验证建立了离子色谱法测定玻璃中氧化锂的的处理条件,淋洗液的适宜浓度及流速,建立了用离子色谱测定玻璃中的氧化锂含量的方法。实验结果表明:本方法玻璃中氧化锂的检出限为0.001 mg/L,回归方程的线性相关系数r大于0.999。对玻璃样品重复进行了6次测定,相对标准偏差RSD为0.54%,并做了不同浓度的加标回收试验,加标回收率为97.3%~102.0%。实验证明,该方法快速准确,高效简便,能达到测定玻璃中氧化锂含量的分析要求。

The treatment conditions,the suitable concentration and flow rate of the eluent for determination of the content of lithium oxide in glass with ion chromatography were established by experiment.The experimental results show that the detection limit of lithium oxide in glass is 0.001 mg/L,and the linear correlation coefficient r of regression equation is greater than 0.999.The relative standard deviation(RSD)was 0.54%by repeat 6 determinations of the glass samples.The recoveries were from 97.3%to 102.0%in different concentrations.Experimental results show that the method is fast,accurate,efficient and simple,and can meet the analytical requirements for the determination of lithium oxide in glass.