DOI: 10.1016/j.marpolbul.2015.04.005
Scopus记录号: 2-s2.0-84932160568
论文题名: Differentiating the roles of photooxidation and biodegradation in the weathering of Light Louisiana Sweet crude oil in surface water from the Deepwater Horizon site
作者: Bacosa H.P. ; Erdner D.L. ; Liu Z.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2015
卷: 95, 期: 1 起始页码: 265
结束页码: 272
语种: 英语
英文关键词: Biodegradation
; Corexit
; Crude oil
; Deepwater Horizon spill
; Photooxidation
; Pristane/phytane
Scopus关键词: Aromatic hydrocarbons
; Crude oil
; Microbiology
; Oil shale
; Paraffins
; Photooxidation
; Polycyclic aromatic hydrocarbons
; Pristane
; Rate constants
; Surface waters
; Weathering
; Biodegradation rate
; Corexit
; Deepwater horizons
; Field conditions
; Northern Gulf of Mexico
; Polycyclic aromatic hydrocarbons (PAHS)
; Quantitative measures
; Temperature conditions
; Biodegradation
; alkane
; benzene
; dichloromethane
; hexane
; petroleum
; phytane
; polycyclic aromatic hydrocarbon derivative
; pristane
; surface water
; unclassified drug
; petroleum
; polycyclic aromatic hydrocarbon
; sea water
; water pollutant
; biodegradation
; crude oil
; dispersant
; oil spill
; photooxidation
; weathering
; analytic method
; Article
; biodegradation
; denaturing gradient gel electrophoresis
; evaporation
; extraction
; oil spill
; photooxidation
; sunlight
; water temperature
; weathering
; analysis
; bioremediation
; chemistry
; Gulf of Mexico
; light
; metabolism
; oil spill
; oxidation reduction reaction
; radiation response
; temperature
; water pollutant
; Atlantic Ocean
; Gulf of Mexico
; Alkanes
; Biodegradation, Environmental
; Gulf of Mexico
; Light
; Oxidation-Reduction
; Petroleum
; Petroleum Pollution
; Polycyclic Hydrocarbons, Aromatic
; Seawater
; Temperature
; Water Pollutants, Chemical
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: We determined the contributions of photooxidation and biodegradation to the weathering of Light Louisiana Sweet crude oil by incubating surface water from the Deepwater Horizon site under natural sunlight and temperature conditions. N-alkane biodegradation rate constants were ca. ten-fold higher than the photooxidation rate constants. For the 2-3 ring and 4-5 ring polycyclic aromatic hydrocarbons (PAHs), photooxidation rate constants were 0.08-0.98day-1 and 0.01-0.07day-1, respectively. The dispersant Corexit enhanced degradation of n-alkanes but not of PAHs. Compared to biodegradation, photooxidation increased transformation of 4-5 ring PAHs by 70% and 3-4 ring alkylated PAHs by 36%. For the first time we observed that sunlight inhibited biodegradation of pristane and phytane, possibly due to inhibition of the bacteria that can degrade branched-alkanes. This study provides quantitative measures of oil degradation under relevant field conditions crucial for understanding and modeling the fate of spilled oil in the northern Gulf of Mexico. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/86085
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
There are no files associated with this item.
作者单位: Marine Science Institute, The University of Texas at Austin, 750 Channel View Drive, Port Aransas, TX, United States
Recommended Citation:
Bacosa H.P.,Erdner D.L.,Liu Z.. Differentiating the roles of photooxidation and biodegradation in the weathering of Light Louisiana Sweet crude oil in surface water from the Deepwater Horizon site[J]. Marine Pollution Bulletin,2015-01-01,95(1)