Journal
MARINE POLLUTION BULLETIN
Volume 90, Issue 1-2, Pages 218-226Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2014.10.048
Keywords
PAHs; Sediment; Mass inventory; Probability risk assessment; Beibu Gulf
Funding
- National Key Basic Research Program of China [2013CB956102]
- project of Guangxi Ba-gui Fellowship
- NSFC [41473118, 41273139]
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Fifteen polycyclic aromatic hydrocarbons (PAHs) in 41 surface sediment samples and a sediment core (50 cm) from the Beibu Gulf, a significant low-latitude developing gulf, were analyzed. PAHs concentrations were 3.01-388 ng g(-1) (mean 95.5 ng g(-1)) in the surface sediments and 10.5-87.1 ng g(-1) (average 41.1 ng g(-1)) in the sediment core. Source apportionment indicated that PAHs were generated from coke production and vehicular emissions (39.4%), coal and biomass combustion (35.8%), and petrogenic sources (24.8%). PM-Is were mainly concentrated in the industrialized and urbanized regions and the harbor, and were transported by atmospheric deposition to the marine matrix. The mass inventory (1.57-2.62 t) and probability risk showed sediments here served as an important reservoir but low PAH risk. Different from oil and natural gas in developed regions, coal combustion has always been a significant energy consumption pattern in this developing region for the past 30 years (56 +/- 5%). (C) 2014 Elsevier Ltd. All rights reserved.
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