DETERMINATION OF SULFIDES AND THIOLS IN PETROLEUM DISTILLATES USING SOLID-PHASE EXTRACTION AND DERIVATIZATION WITH PENTAFLUOROBENZOYL CHLORIDE

Authors
THOMSON JS GREEN JB MCWILLIAMS TB
Citation
Js. Thomson et al., DETERMINATION OF SULFIDES AND THIOLS IN PETROLEUM DISTILLATES USING SOLID-PHASE EXTRACTION AND DERIVATIZATION WITH PENTAFLUOROBENZOYL CHLORIDE, Energy & fuels, 11(4), 1997, pp. 909-914
Citations number
26
Categorie Soggetti
Engineering, Chemical","Energy & Fuels
Journal title
Energy & fuels → ACNP
ISSN journal
08870624
Volume
11
Issue
4
Year of publication
1997
Pages
909 - 914
Database
ISI
SICI code
0887-0624(1997)11:4<909:DOSATI>2.0.ZU;2-J
Abstract
An improved method for differentiating sulfides, thiophenes, and thiol s in petroleum distillates is presented. Thiophenes are separated from sulfides and thiols via solid-phase extraction. Reaction with pentafl uorobenzoyl chloride is employed to form thiol esters, while sulfides do not react. Thiol elution times increase sufficiently after derivati zation to provide separation from sulfides during gas chromatographic analysis. In addition, electron impact mass spectra of derivatized thi ols exhibit an intense, characteristic 195 fragment ion, which aids in their identification.