气相色谱与化学发光检测器连用测定石脑油中5种噻吩类硫化物的研究  

Determination of Five Thiophene Sulfides in Naphtha by Gas Chromatography and Chemiluminescence Detector

作　　者：孙儒瑞 高孙慧 黄宏星 张怡 赵亚娟 李正章 麦明荣 SUN Ru-rui;GAO Sun-hui;HUANG Hong-xing;ZHANG Yi;ZHAO Ya-juan;LI Zheng-zhang;MAI Ming-rong(Technology Center of Haikou Customs,Hainan Haikou 570311,China)

机构地区：[1]海口海关技术中心

出　　处：《辽宁化工》2019年第12期1226-1228,共3页Liaoning Chemical Industry

基　　金：国家质量监督检验检疫总局科技计划项目，项目号：2017IK148

摘　　要：建立GC-SCD测定石脑油中5种噻吩类硫化物的方法,采用一系列混合标样分别建立相应的标准曲线,研究该方法的准确度和精密度。结果表明,噻吩、2-甲基噻吩、3-甲基噻吩、5-甲基苯并噻吩、3-甲基苯并噻吩浓度在2.5~100mg/L范围内,浓度与峰面积成良好的线性关系,相关系数R^2为0.99599~0.99945,检出限0.24~0.37 mg/L。采用浓度为20 mg/L的混合标样进行精密度的考察,精密度为0.39%~0.88%。与其他检测方法比较,该方法操作简单,检测时间短,稳定性高,精密度高。A method for the determination of five thiophene sulfides in naphtha by GC-SCD was developed.The corresponding standard curve was established by using a series of mixed standard samples to study the accuracy and precision of the method.The results showed that the linear relationship between concentration and peak area was good when the concentration of thiophene,2-methylthiophene,3-methylthiophene,5-methylbenzothiophene and 3-methylbenzothiophene was in the range of 2.5~100 mg/L.The correlation coefficient R^2 was 0.99599~0.99945 and the detection limit was 0.24~0.37 mg/L.Compared with other detection methods,the method is simple in operation,short in detection time,high in stability and high in precision.

关 键 词：GC-SCD 石脑油 5种噻吩类硫化物 

分 类 号：TQ0657.7[化学工程]