石脑油中有机氯化物的形态及含量分析方法研究

摘要

建立了石脑油中有机氯化物的形态及含量分析方法,采用气相色谱-电子捕获检测器(GC-ECD)方法对不同原油的石脑油中有机氯化物进行定性、定量分析.结果表明,国内主要原油的石脑油中存在的主要有机氯化物为1,2-二氯丙烷、二氯甲烷、氯仿、三氯乙烯及四氯化碳等,其它有机氯化物的含量较少,主要有机氯化物来源于油田化学剂.所建GC-ECD方法的相对标准偏差小于3.0％,加标回收率在92.9％～103.5％之间,符合色谱分析的一般要求.%The qualitative and quantitative analysis method (GC-ECD) for organic chlorides in naphtha is proposed.Through analysis of different naphtha from different crude oils,it is known that the main organic chlorides in naphtha of domestic crude oils are 1,2-dichloro propane,methylene chloride,chloroform,carbon tetrachloride,etc.from assistant chemicals used in crude oil production.The amount of other kinds of organic chloride is very low.The relative standard deviation of GC-ECD was less than 3.0％ and the standard recovery was between 92.9％-103.5％.The results indicate that this method could meet the demand of conventional chromatograph analysis.