摘要
采用一台气相色谱仪,三阀三通道,三氢火焰离子化检测器,一次进样同时检测乙烯中烃杂、微量CO、CO2以及含氧化合物等常规杂质的分析。方法中烃杂最小检测限为0.05 mL/m^3,CO、CO2最小检测限为0.03 mL/m^3,含氧化合物最小检测限为0.3 mL/m^3。同时对该方法进行了精密度、准确度和最小检测限考察。各个组分的相对标准偏差小于2.0%,回收率都在95%~105%之间,满足标准要求。结果表明该方法是乙烯中常规杂质含量测定的一种快捷、准确的分析方法。
A gas chromatography with three valves three channels and three hydrogen flame ionization detectors was used to analyze amounts of trace carbon monoxide,carbon dioxide,oxygenated chemicals and hydrocarbogn impurities in ethylene by injecting sample one time.The minimum limits of hydrocarbon impurities were 0.05 mL/m^3,the minimum limits of carbon monoxide and carbon dioxide were 0.03 mL/m^3,and the minimum limits of oxyenated chemicals were 0.3 mL/m^3.At the same time,the precision,accuracy and minimum limit of the detection method were checked.The method conformed to requirements of standard that the recoveries of all components were 95%~105%and the relative standard deviation(RSD)were all less than 2.0%.The results showed that the method was simple,fast,accurate and reliable.
作者
孙磊丽
李淼
陈丙刚
王腾
王德翔
褚津维
张炎
SUN Lei-li;LI Miao;CHEN Bing-gang;WANG Teng;WANG De-xiang;CHU Jin-wei;ZHANG Yan(Wanhua Chemical Group Co.,Ltd.,Shandong Yantai 264000;Yantai Inspection and Certification Co.,Ltd.,Shandong Yantai 264000,China)
出处
《广州化工》
CAS
2020年第18期74-77,共4页
GuangZhou Chemical Industry
关键词
气相色谱仪
烃类杂质
微量
一氧化碳
二氧化碳
氧化物
中心切割
gas chromatograph
hydrocarbon impurities
trace amounts
carbon monoxide
carbon dioxide
oxygenated chemicals
deans switch
