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Main Title Developing methods for analyzing oil dispersants in seawater /
Author Haynes, D. L. ; Kelly, D. G. ; Smith, J. H. ; Fernandez, E. L.
Other Authors
Author Title of a Work
Haynes, D. L.
CORP Author SRI International, Menlo Park, CA.;Municipal Environmental Research Lab., Cincinnati, OH.
Publisher U.S. Environmental Protection Agency, Municipal Environmental Research Laboratory,
Year Published 1984
Report Number EPA/600/2-84/144; EPA-R-807059
Stock Number PB84-238328
Subjects Oil separators ; Oil pollution of the sea--United States
Additional Subjects Water analysis ; Dispersants ; Sea water ; Surfactants ; Gas chromatography ; Thin layer chromatography ; Ultraviolet spectroscopy ; Ion exchanging ; Water pollution ; Chemical analysis ; Oil pollution detection ; Water pollution detection ; High performance liquid chromatography
Library Call Number Additional Info Location Last
NTIS  PB84-238328 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 36 pages ; 28 cm
An analytical method was sought for determining the concentrations of dispersants in seawater contaminated with oil in both field and laboratory situations. Methods of analysis for surfactants found in the literature included spectrophotometry, gas chromatography (GC), thin-layer chromatography (TLC), and high performance liquid chromatography (HPLC). References to collection, concentration, and cleanup methods included liquid/liquid extractions, gas stripping, and solid sorbents. Of seven dispersants tested, one contained solely anionic surfactants, three contained only nonionic, and three contained both anionic and nonionic surfactants. HPLC normal phase, reverse phase, and ion exchange column techniques were tried. Detection methods included (1) direct measurement of the surfactants by tensammetry and ultraviolet (UV) spectrometry, and (2) derivation of the surfactant with phenyl isocyanate with subsequent measurement by UV spectrometry. The most promising method of those tested was analysis of the phenyl isocyanate derivative of POE nonylphenol by normal phase HPLC using UV spectrometric detection. A method of collection, concentration, and cleanup of seawater solutions of dispersants containing oil was developed using the solid sorbent SEP-PAK C18 cartridge. This sorbent successfully removed compounds that interfered with colorimetric tests.
Caption title. "August 1984." "EPA-600/2-84-144." Microfiche.