摘要
实际工作中环己胺中微量水分测定的不稳定。改进采用甲醇︰乙酸=4︰1反应体系测定,结果表明相对标准偏差小于0.5%,加标回收率为98.9%～101.5%,终点明确,提高了分析的准确度。
Unstability for the trace moisture determination in cyclohexylamine in the practical work was existed.Improvement by using methanol and acetic acid which the volume ratio was 4︰1,The results showed that the relative standard deviation（RSD） was smaller than 0.5 % and the recovery rate was 98.9 %～101.5 %.End clear and the accuracy can be increased improvement.
出处
《广东化工》
CAS
2011年第4期134-134,163,共2页
Guangdong Chemical Industry
基金
中国石化集团南京化学工业有限公司青年科技攻关项目
关键词
电位滴定法
环己胺
微量水分
改进
potentiometric
titration cyclohexylamine
trace moisture
improvement
