摘要
通过对用于提取离子交换树脂中铁的消解方法的选择,建立了邻菲啰啉分光光度法测定树脂中铁含量的方法。研究了样品消解方式、酸的品种、消解时间、共存离子干扰对测定的影响。结果表明:湿树脂直接采用硝酸水浴加热消解20 min,铁的提取率可达到97%。方法回收率为92%～105%,RSD为3.2%。该法简单快速,实用性强。
Through optimization of digestion method of iron- containing sample in ion exchange resin, the determination of iron content in ion exchange resin by o-phenanthroline photometry has been established. The effects of sample digestion method,acid varieties,digestion time,and interference of co-existing ions on the determination are studied. The results show that iron extraction rate can reach 97% ,when wet resin is heated and digested directly for 20 min with nitrate in water bath. Recovery rate is between 92%-105% ,and RSD 3.2%. The method is simple, rapid, and practical.
出处
《工业水处理》
CAS
CSCD
北大核心
2013年第3期74-76,共3页
Industrial Water Treatment
关键词
离子交换树脂
分光光度法
铁
邻菲啰啉
ion exchange resin
spectrophotometry
iron
o-phenanthroline
