A comparison of methods for speciation of sulfur in a petroleum production effluent
- Univ. of California, Davis, CA (United States)
A multi-method approach was used to identify and quantify inorganic sulfur species present in a highly sulfidic waste effluent generated during offshore oil production. Inorganic sulfur species including bisulfide (SH{sup -}), polysulfides (S{sub x}{sup 2-}), thiosulfate (S{sub 2}O{sub 3}{sup 2-}), and sulfite (SO{sub 3}{sup 2-}) were determined in these aqueous samples using differential pulse polarography (DPP), iodometric titration, spectrophotometric detection using Ellman`s reagent, and high performance liquid chromatography (HPLC) after derivatization with 2,2{prime}-dithiobis(5-nitropyridine) (DTNP). Our results indicate that bisulfide is the predominant species found in produced water (61%), followed by sulfate (33%), polysulfides (3.4%), and thiosulfate (2.0%). Sulfite levels were minor by comparison. Quantification of inorganic sulfur species is complicated by coupled equilibria which must be taken into account in sulfur speciation protocols.
- OSTI ID:
- 370267
- Report Number(s):
- CONF-960376-; TRN: 96:003805-0318
- Resource Relation:
- Conference: Spring national meeting of the American Chemical Society (ACS), New Orleans, LA (United States), 24-28 Mar 1996; Other Information: PBD: 1996; Related Information: Is Part Of 211th ACS national meeting; PB: 2284 p.
- Country of Publication:
- United States
- Language:
- English
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