摘要
水的硬度测定 ,通常采用EDTA滴定法。文中改用离子色普法测定 ,一次进样后同时测定水样中mg/L级的钙和镁 ,然后换算成以mg/L碳酸钙表示的硬度。方法的回收率在 98 4%~ 1 0 2 2 %之间 ,相对标准偏差为 0 .95 %~ 1 2 2 % ,具有简便、快速。
The determination of total hardness in water by Ion chromatography is reported in this paper. In this method, the concentration of Mg 2+ and Ca 2+ are determined directly and the total hardness in water is found by substituting these data into the formula deduced by the author. Recoveries of 98.4%~102.0% and RDS's of 0.95%~1.20% are obtained. This method is proved to be simple, rapid and accurate.
出处
《内蒙古石油化工》
CAS
2003年第1期56-57,共2页
Inner Mongolia Petrochemical Industry