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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Gong, Yanyan Zhao, Xiao O'Reilly, S. E. Qian, Tianwei Zhao, Dongye |
| Spatial Coverage | Gulf of Mexico |
| Description | Country affiliation: United States Author Affiliation: Gong Y ( Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL 36849, USA.); Zhao X ( Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL 36849, USA.); O'Reilly SE ( Bureau of Ocean Energy Management, GOM Region, Office of Environment, New Orleans, LA 70123, USA.); Qian T ( Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL 36849, USA); Zhao D ( Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL 36849, USA. Electronic address: zhaodon@auburn.edu.) |
| Abstract | Effects of a model oil dispersant (Corexit EC9500A) on sorption/desorption of phenanthrene were investigated with two marine sediments. Kinetic data revealed that the presence of the dispersant at 18 mg/L enhanced phenanthrene uptake by up to 7%, whereas the same dispersant during desorption reduced phenanthrene desorption by up to 5%. Sorption isotherms confirmed that at dispersant concentrations of 18 and 180 mg/L, phenanthrene uptake progressively increased for both sediments. Furthermore, the presence of the dispersant during desorption induced remarkable sorption hysteresis. The effects were attributed to added phenanthrene affinity and capacity due to sorption of the dispersant on the sediments. Dual-mode models adequately simulated sorption isotherms and kinetic data in the presence of the dispersant. Water accommodated oil (WAO) and dispersant-enhanced WAO increased phenanthrene sorption by up to 22%. This information is important for understanding roles of oil dispersants on the distribution and transport of petroleum PAHs in seawater-sediments. |
| File Format | HTM / HTML |
| ISSN | 02697491 |
| Volume Number | 185 |
| e-ISSN | 18736424 |
| Journal | Environmental Pollution |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-02-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Discipline Science Geologic Sediments Chemistry Petroleum Analysis Phenanthrenes Surface-active Agents Water Pollutants, Chemical Gulf Of Mexico Kinetics Models, Chemical Petroleum Pollution Seawater Journal Article Research Support, Non-u.s. Gov't Research Support, U.s. Gov't, Non-p.h.s. |
| Content Type | Text |
| Resource Type | Article |
| Subject | Health, Toxicology and Mutagenesis Pollution Medicine Toxicology |
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