DOI: 10.1016/j.marpolbul.2017.06.004
Scopus记录号: 2-s2.0-85020887897
论文题名: Calculating in situ degradation rates of hydrocarbon compounds in deep waters of the Gulf of Mexico
作者: Thessen A.E. ; North E.W.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2017
卷: 122, 期: 2018-01-02 起始页码: 77
结束页码: 84
语种: 英语
英文关键词: Deep ocean
; Deepwater Horizon
; Gulf of Mexico
; Hydrocarbon degradation
; Microbial biodegradation
; Oil spill
Scopus关键词: Biodegradation
; Degradation
; Marine pollution
; Naphthalene
; Oil spills
; Rate constants
; Deep ocean
; Deepwater horizons
; Gulf of Mexico
; Hydrocarbon degradation
; Microbial biodegradation
; Hydrocarbons
; alkane
; benzene
; benz[a]anthracene
; chrysene
; cyclohexane
; dodecane
; fluoranthene
; fluorene
; hexadecane
; hydrocarbon
; meta xylene
; methylcyclohexane
; naphthalene
; para xylene
; phenanthrene
; pristane
; pyrene
; tetradecane
; toluene
; tridecane
; hydrocarbon
; biodegradation
; deep water
; hydrocarbon
; marine pollution
; microbial activity
; oil spill
; Article
; biodegradation
; controlled study
; degradation kinetics
; Gulf of Mexico
; half life time
; microbial degradation
; oil spill
; pollution transport
; sea pollution
; bioremediation
; metabolism
; microbiology
; oil spill
; theoretical model
; Atlantic Ocean
; Gulf of Mexico
; Biodegradation, Environmental
; Gulf of Mexico
; Hydrocarbons
; Models, Theoretical
; Petroleum Pollution
; Water Microbiology
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Biodegradation is an important process for hydrocarbon weathering that influences its fate and transport, yet little is known about in situ biodegradation rates of specific hydrocarbon compounds in the deep ocean. Using data collected in the Gulf of Mexico below 700 m during and after the Deepwater Horizon oil spill, we calculated first-order degradation rate constants for 49 hydrocarbons and inferred degradation rate constants for an additional 5 data-deficient hydrocarbons. Resulting calculated (not inferred) half-lives of the hydrocarbons ranged from 0.4 to 36.5 days. The fastest degrading hydrocarbons were toluene (k = − 1.716), methylcyclohexane (k = − 1.538), benzene (k = − 1.333), and C1-naphthalene (k = − 1.305). The slowest degrading hydrocarbons were the large straight-chain alkanes, C-26 through C-33 (k = − 0.0494 through k = − 0.007). Ratios of C-18 to phytane supported the hypothesis that the primary means of degradation in the subsurface was microbial biodegradation. These degradation rate constants can be used to improve models describing the fate and transport of hydrocarbons in the event of an accidental deep ocean oil spill. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/88149
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: The Ronin Institute for Independent Scholarship, Montclair, NJ, United States; The Data Detektiv, Waltham, MA, United States; University of Maryland Center for Environmental Science, Horn Point Laboratory, United States
Recommended Citation:
Thessen A.E.,North E.W.. Calculating in situ degradation rates of hydrocarbon compounds in deep waters of the Gulf of Mexico[J]. Marine Pollution Bulletin,2017-01-01,122(2018-01-02)