摘要
水中Cl^-浓度的测定方法有很多,硝酸银滴定法是测定Cl^-的仲裁方法。在硝酸银滴定法中影响测定Cl^-的因素很多,主要包括水样pH的影响、氯化银白色沉淀造成的视觉因素的影响、铬酸钾指示剂的浓度影响及杂质离子,如S^(2-)、SO_3^(2-)和S_2O_3^(2-)的干扰等,如何消除这些影响是研究的终点。
There are many methods for determining chloride ion concentration in water.Among them,silver nitrate titration is the arbitration method for determining chloride ion.There are many factors affecting the determination of chloride ion in silver nitrate titration,which are pH of water sample,visual factors caused by AgCl white precipitation,concentration of potassium chromate indicator,interference of impurity ions such as S^2-,SO3^2-and S2O3^2-,etc.How to eliminate these effects is the end point of the study.
作者
赵卓玲
Zhao Zhuoling(New Energy Geology Team,Hebei Coalfield Geology Bureau,Xingtai 054000,China)
出处
《煤炭与化工》
CAS
2019年第2期149-151,共3页
Coal and Chemical Industry
关键词
硝酸银
滴定法
Cl^-
影响因素
silver nitrate
titration
chloride ion
influence factor