摘要
建立了EDTA、NTA混合体系中二者含量的络合滴定检验法。在pH =3.5时 ,以钛铁试剂为指示剂 ,用铁离子滴定EDTA和NTA的总和 ,在pH =6时 ,用铁离子滴定EDTA的含量 ,二次滴定的差值即为NTA的含量。该方法快速简便 ,准确度高 ,是对GB1 41 0的补充和完善 ,尤其适用于生产的现场控制分析。
A method of determination of EDTA and NTA in mixture by complexometric titration is described in this paper. The total comount of EDTA and NTA is determined in a buffer medium of pH=3.5 by titration with Fe 3+ using titanic iron reagent as indicator。The EDTA content is determined in a buffer medium of pH=6. The NTA content is obtainted by difference. The method is proved to be simple and rapid, good in sensetivity and accuracy. It is complement to GB 1410.
出处
《辽宁化工》
CAS
2000年第5期301-303,共3页
Liaoning Chemical Industry