色谱-三重四级杆质谱定量分析深度加氢脱硫柴油中的二苯并噻吩类化合物  

Determination of Dibenzothiophenes in Deep Hydrodesulfurized Diesel by Gas Chromatography-Triple Quadrupole Mass Spectrometry

作　　者：刘明星[1] 李颖[1] 刘泽龙[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2015年第5期1103-1109,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展计划"973"项目(2012CB224800)基金资助

摘　　要：利用选择反应监测模式（SRM）,建立了一种快速、灵敏的深度加氢脱硫柴油中二苯并噻吩类化合物（DBTs）的气相色谱-三重四级杆质谱（GC-QQQ-MS/MS）测定方法。以5种DBTs混合标样绘制标准曲线,对深度加氢柴油中的C0～C4烷基取代二苯并噻吩（（C0~C4）DBTs）进行定量。实验结果表明,采用该方法可以避免柴油中其他化合物的干扰,快速准确测定深度加氢脱硫柴油中（C0~C4）DBTs的含量,而且重现性好,相对标准偏差低于10%,方法的线性相关系数R2〉0.9996,检出限和定量限分别在0.0006~0.0017mg/L和0.002~0.006mg/L范围,回收率在98.23%~114.59%范围。该方法适用于深度加氢脱硫柴油中DBTs的测定。An efficient and sensitive analytical method of gas chromatography-triple quadrupole mass spectrometry（GC-QQQ-MS/MS）with the selected reaction monitoring（SRM）for determination of dibenzothiophenes（DBTs）in deep hydrodesulfurized diesel was developed.The standard curves of DBTs were figured out,and the DBSs with alkyl chains of0 to 4carbon atoms（（C0-C4）DBTs）in deep hydrodesulfurized diesel were analyzed quantitatively.The experimental data showed that the matrix interference during the determination of（C0-C4）DBTs could be effectively eliminated,and the（C0-C4）DBTs in deep hydrodesulfurized diesel could be rapidly and sensitivily determined by this method with the relative standard deviation of less than 10%and the linear correlation coefficients of more than 0.9996（R20.9996）.For all（C0-C4）DBTs the detection limit（LOD）and quantitation limit（LOQ） were in the ranges of 0.0006- 0.0017 mg/L and 0.002-0.006mg/L,respectively,and the recoveries were in the range of 98.23%-114.59%.This method is suitable for the determination of DBTs in deep hydrodesulfurized diesel.

关 键 词：二苯并噻吩类化合物 气相色谱-三重四级杆质谱 柴油 选择反应监测 深度加氢脱硫 

分 类 号：O657.6[理学—分析化学]