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Title: Comparison of methods for inorganic sulfur speciation in a petroleum production effluent

Abstract

Multiple analytical techniques were compared for identification and quantification of inorganic sulfur species present in a sulfidic waste effluent (produced water) generated during offshore oil production. Inorganic sulfur species including sulfide, polysulfides, thiosulfate, sulfite, and sulfate were measured in produced water samples using sampled direct current polarography, differential pulse polarography, iodometry, spectrophotometry after derivatization with Ellman`s reagent, high-performance liquid chromatography after derivatization with 2,2{prime}-dithiobis(5-nitropyridine), and barium chloride precipitation of sulfate. Sulfide was determined in seven produced water samples at concentrations of 1 to 8 mM, as well as sulfate, polysulfides, and thiosulfate; sulfite was detected only occasionally in lower concentrations. Comparison of four methods used for sulfide measurement demonstrated systematic differences in results generated by various methods. Measurements of inorganic sulfur species in produced water are influenced by coupled equilibria between different chemical forms. Polysulfides exert an important role in coupling reactions between sulfur in intermediate oxidation states, and their presence can affect quantitation of these species when physical separations or standard additions perturb solution equilibria.

Authors:
;  [1]
  1. Univ. of California, Davis, CA (United States). Facility for Advanced Instrumentation
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
675435
Resource Type:
Journal Article
Journal Name:
Environmental Toxicology and Chemistry
Additional Journal Information:
Journal Volume: 17; Journal Issue: 11; Other Information: PBD: Nov 1998
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 02 PETROLEUM; COMPARATIVE EVALUATIONS; SULFIDES; SULFATES; WASTE WATER; PETROLEUM; CHEMICAL ANALYSIS; WATER POLLUTION; ENVIRONMENTAL TRANSPORT

Citation Formats

Witter, A E, and Jones, A D. Comparison of methods for inorganic sulfur speciation in a petroleum production effluent. United States: N. p., 1998. Web. doi:10.1002/etc.5620171107.
Witter, A E, & Jones, A D. Comparison of methods for inorganic sulfur speciation in a petroleum production effluent. United States. https://doi.org/10.1002/etc.5620171107
Witter, A E, and Jones, A D. 1998. "Comparison of methods for inorganic sulfur speciation in a petroleum production effluent". United States. https://doi.org/10.1002/etc.5620171107.
@article{osti_675435,
title = {Comparison of methods for inorganic sulfur speciation in a petroleum production effluent},
author = {Witter, A E and Jones, A D},
abstractNote = {Multiple analytical techniques were compared for identification and quantification of inorganic sulfur species present in a sulfidic waste effluent (produced water) generated during offshore oil production. Inorganic sulfur species including sulfide, polysulfides, thiosulfate, sulfite, and sulfate were measured in produced water samples using sampled direct current polarography, differential pulse polarography, iodometry, spectrophotometry after derivatization with Ellman`s reagent, high-performance liquid chromatography after derivatization with 2,2{prime}-dithiobis(5-nitropyridine), and barium chloride precipitation of sulfate. Sulfide was determined in seven produced water samples at concentrations of 1 to 8 mM, as well as sulfate, polysulfides, and thiosulfate; sulfite was detected only occasionally in lower concentrations. Comparison of four methods used for sulfide measurement demonstrated systematic differences in results generated by various methods. Measurements of inorganic sulfur species in produced water are influenced by coupled equilibria between different chemical forms. Polysulfides exert an important role in coupling reactions between sulfur in intermediate oxidation states, and their presence can affect quantitation of these species when physical separations or standard additions perturb solution equilibria.},
doi = {10.1002/etc.5620171107},
url = {https://www.osti.gov/biblio/675435}, journal = {Environmental Toxicology and Chemistry},
number = 11,
volume = 17,
place = {United States},
year = {Sun Nov 01 00:00:00 EST 1998},
month = {Sun Nov 01 00:00:00 EST 1998}
}