摘要
本法是用EDTA络合返滴定直接测量皮革鞣液中的三价铬,与仪器分析法和传统的碘量法比较,有经济、省时、易掌握、准确度较高的优点,特别是在测量过程中不需将三价铬氧化为毒性较大的六价铬,从而一定量地避免了环境污染。
Compared with instrumental analysis and iodometry, it is ecomomical, time-saving, easily mastering and high accurate to determine the ferric chromium in tannic liquid with complexometric returned titration, especially without oxidizing ferric chromium into toxicity hexabasic,so as to avoid pollution.
出处
《曲靖师范学院学报》
1994年第S2期57-60,63,共5页
Journal of Qujing Normal University
关键词
返滴定
络合反应
反应速度
滴定剂
掩蔽
指示剂
数据
return titration, complexometric icaction, speed of reaction, tiirant, cover, indicator, data
