石油化工2025，Vol.54Issue(4)：516-523,8.DOI:10.3969/j.issn.1000-8144.2025.04.010
气相色谱-选择性检测法分析工业用苯中微量含硫化合物
Analysis of trace sulfur compounds in industrial benzene by gas chromatography-selective detection method
王小雨 1李继文 1王川 1姜丽燕 1李诚炜1
作者信息
- 1. 中石化(上海)石油化工研究院有限公司,上海 201208
- 折叠
摘要
Abstract
The accuracy and repeatability of the three gas chromatography-selective detection methods for the simultaneous determination of thiophene and carbon disulfide in benzene were investigated,including gas chromatography-sulfur chemiluminescence detection(GC-SCD),gas chromatography-flame photometric detection(GC-FPD)and gas chromatography-pulse flame photometric detection(GC-PFPD).The effects of column type,polarity,and membrane thickness on the measurement results were studied.The quantitative method was determined by the response of thiophene and carbon disulfide content to the peak area.The experimental results show that the column is preferably a highly polar DB-WAX column with a thicker liquid film of 1.00 μm.The linear response calculation model of GC-SCD and the nonlinear response correction calculation models of GC-FPD and GC-PFPD were employed.The recovery of carbon disulfide(0.08-4.56 mg/kg)and thiophene(0.07-4.04 mg/kg)samples on the GC-SCD detector ranges from 95.7％-112.5％and 95.0％-101.5％,respectively,with the relative standard deviation of the 5 replicates within 7.4％.The minimum detection limit of thiophene in GC-SCD,GC-FPD,and GC-PFPD is 0.01,0.03,0.05 mg/kg,respectively.The detection limit of carbon disulfide in GC-SCD is 0.01 mg/kg.关键词
苯/含硫化合物/气相色谱-选择性检测法/噻吩/二硫化碳Key words
benzene/sulfur compounds/gas chromatography-selective detection method/thiophene/carbon disulfide分类
化学工程引用本文复制引用
王小雨,李继文,王川,姜丽燕,李诚炜..气相色谱-选择性检测法分析工业用苯中微量含硫化合物[J].石油化工,2025,54(4):516-523,8.
