Fate of linear alkylbenzene sulfonate in the Mississippi River
Article Abstract:
The occurrence and fate of linear alkylbenzene sulfonate (LAS) in the 2,800-km. span of the Mississippi River between Minneapolis, MN, and New Orleans, LA, was studied. LAS is a common anionic surfactant in municipal sewage effluents. A sampling of river water and bottom sediment revealed the presence of LAS on all bottom sediments at concentrations between 0.01 and 20 mg/kg. It was also found in 21% of the water samples at concentrations ranging from 0.1 to 28.2 ug/L, indicating that LAS is a common contaminant in bottom sediments of the Mississippi River and that it is present mainly downstream from the sewage outfalls of major cities in dissolved form.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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Fate of alkylbenzenesulfonates and dialkyltetralinsulfonates in sewage-contaminated groundwater
Article Abstract:
Linear alkylbenzene sulfonate (LAS) surfactants have been used in detergents and discharged into the environment to such a great extent that much attention is focused on LAS in sewage and groundwater. A study at the US Geological Survey Cape Cod Toxic Waste Research Site used high-performance liquid chromatography with fluorescence detection and fast atom bombardment spectrometry. Removal of LAS from sewage was measured at 96%, with another 3% removed infiltration. The resulting groundwater LAS levels were undetectable with this method.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1992
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Fate and transport of linear alkylbenzenesulfonate in a sewage-contaminated aquifer: a comparison of natural-gradient pulsed tracer test
Article Abstract:
The degradation behavior of linear alkylbenzenesulfonate surfactant in both oxic and a moderately aerobic, sewage-contaminated zone showed the surfactant degrading better in the sewage-contaminated zone, as seen in a 20% loss of surfactant mass. This is attributed to biodegradation which preferentially removed the longer alkyl chain homologues and external isomers.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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