Journal
ENVIRONMENTAL POLLUTION
Volume 263, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2020.114343
Keywords
Bohai sea; Oil spill; Penglai 19-3; Environmental impacts; Habitat recovery
Categories
Funding
- China Biodiversity Conservation and Green Development Foundation
- Natural Science Foundation of China [41776126, 41876127, U1706219]
- Natural Science Foundation of Shandong Province [U1706219]
- Multi-Partner Research Initiative Program under Canada's Oceans Protection Plan
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The 2011 spill at platforms B and C of the Penglai 19-3 oil field in the Bohai Sea has been the worst oil spill accident in China. To assess long-term effects, a comprehensive monitoring program of chemical and biological variables (within a 2.2 km radius of the spill site) was conducted five years after the spill. Comparison of nutrient, Chl-a and oil concentrations in seawater, TOC, PAHs, heavy metals concentrations within the sediments, and the abundance and biomass of macrobenthic organisms to values obtained before and after the oil spill in previous studies indicate habitat recovery has occurred within the Bohai Sea following the episodic oil release. Observed elevated oil concentration in the water column and higher concentrations of two heavy metals, five PAHs, TOC, TOC/TN and lower values of delta C-13, together with a reduction in macrobenthic biomass in near-field samples, suggest the influence of contaminants from chronic releases of oil and operational waste discharges within the vicinity of the oil platforms. (C) 2020 Elsevier Ltd. All rights reserved.
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