[Determination of sulfur compounds in fluid catalytic cracking gasoline by gas chromatography with a sulfur chemiluminescence detector].
A method for the separation and determination of sulfur compounds in fluid catalytic cracking gasoline (FCC gasoline) by gas chromatography with a sulfur chemiluminescence detector (GC-SCD) was established. Fifty eight sulfur compounds including mercaptan, sulfide, disulfide, thiophene, alkyl thiophenes, benzothiophene and alkyl benzothiophenes were identified based on their retention indexes and the data obtained from gas chromatography with an atomic emission detector (GC-AED). The effects of flow rate of carrier gas and oven temperature were discussed. Detection reproducibilities of main sulfur compounds (thiophene, n-butyl mercaptan, 2-methylthiophene, 3-methylthiophene, 2,4-dimethylthiophene) in FCC gasoline were satisfactory (RSDs were no more than 5.0%) and detection limit for sulfur was 0.1 mg/L. Using thiophene and benzothiophene as testing samples, it was determined that response factor was independent of the molecular structure of sulfur compounds. The linear range was 0.5-800.0 mg/L sulfur with a correlation coefficient of 0.999.
Yang
Yongtan
Y
Research Institute of Petroleum Processing, China Petroleum & Chemical Corporation, Beijing 100083, China. yangyt@ripp-sinopec.com
Wang
Zheng
Z
Zong
Baoning
B
Yang
Haiying
H
D002384:Catalysis; D002849:Chromatography, Gas / Q000379:methods*; D005742:Gasoline / Q000032:analysis*; D007287:Inorganic Chemicals / Q000032:analysis; D057230:Limit of Detection; D008163:Luminescent Measurements / Q000379:methods*; D015203:Reproducibility of Results; D013054:Spectrophotometry, Atomic / Q000379:methods; D013455:Sulfur / Q000032:analysis*; D013457:Sulfur Compounds / Q000032:analysis* / Q000737:chemistry*; D013696:Temperature
D005742:Gasoline; D007287:Inorganic Chemicals; D013457:Sulfur Compounds; D013455:Sulfur