摘要
为解决胺液水冷器微量泄漏难以及时发现的难题,建立了离子色谱法测定循环水中N-甲基二乙醇胺含量的方法。采用SH-CC-4型色谱柱,以甲烷磺酸和18-冠醚-6为淋洗液,N-甲基二乙醇胺质量浓度在(0.08~250)mg·L-1范围内,峰面积与浓度呈良好的二次曲线关系,相关系数为0.9991,检出限(3S/N)为0.08mg·L-1,加标回收率97.3%~104.4%。该方法操作简便、检出限低,具有良好的精密度和准确度,可用于胺法脱硫装置循环水中泄漏胺液的检测。
In order to solve the problem that it is difficult to detect trace leakage of amine solvent cooler in time,a method for deter-mination of N-methyl diethanolamine in circulating water by ion chromatography was established.SH-CC-4 column was used with methanesulfonic acid and 18-crown-6 as eluent.The peak area showed a good quadratic curve relationship with the concentration in the range of 0.08 to 250mg·L^(-1).The correlation coefficient was 0.9991,the detection limit(3S/N)was 0.08mg·L^(-1).The values of recovery found were in the range of 97.3%~104.4%.The method is easy to operate.It has low detection limit,good precision and accuracy.It can be used for leakage detection of amine solvent in amine desulfurization unit.
作者
肖寒
李明哲
王化吉
XIAO Han;LI Ming-zhe;WANG Hua-ji(Sinopec Research Institute of Safety Engineering Co.,Ltd.,Qingdao 266100,China;State Key Laboratory of Safety and Control for Chemicals,Qingdao 266100,China)
出处
《化学研究与应用》
CAS
北大核心
2023年第6期1499-1504,共6页
Chemical Research and Application
基金
中国石化科技计划项目(318023-12)资助
中国石化重大科技项目(321123)资助。
关键词
离子色谱法
循环水
N-甲基二乙醇胺
Ion chromatography
circulating water
N-methyldiethanolamine
