离子色谱法测定磷石膏中水溶性氟离子和氯离子

Determination of Water-soluble Fluorine and Chloride Ions in Phosphogypsum by Ion Chromatography

为更好的满足磷石膏综合利用对高效分析手段的需要,采用离子色谱法测定磷石膏中水溶性氟离子与氯离子含量。与传统方法相比,方法操作简便,测定结果一致。对方法进行了验证,得出水溶性氟离子方法检出限为0.0004%、精密度为5.3%,氯离子方法检出限为0.0002%、精密度为6.4%,加标回收率均在80%~100%之间。方法的检出限低、准确度高,可供检测一线参考。

In order to meet the better need for efficient analytical means for comprehensive utilization of phosphogypsum,the contents of water-soluble fluoride and chloride ions in phosphogypsum were determined by ion chromatography.The method was verified and the detection limit of water-soluble fluoride ion method was 0.0004%and the precision was 5.3%,while the detection limit of chloride ion method was 0.0002%and the precision was 6.4%.The recoveries ranged from 80%to 100%.This method has low detection limit and high accuracy,which can be used for reference in the first line of detection.