State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200062, China.
Ecosystem Science, Fisheries and Oceans Canada, Ottawa, ON, K1A 0E6, Canada.
Environ Pollut. 2020 Aug;263(Pt B):114343. doi: 10.1016/j.envpol.2020.114343. Epub 2020 Mar 10.
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 δC, 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.
2011 年渤海蓬莱 19-3 油田平台 B 和 C 的溢油事故是中国最严重的溢油事故。为了评估长期影响，溢油事件发生五年后，对距溢油点 2.2 公里范围内的化学和生物变量（within a 2.2 km radius of the spill site）进行了全面监测。与溢油前后的研究结果相比，对海水中营养盐、Chl-a 和油浓度、TOC、PAHs、沉积物中重金属浓度以及大型底栖生物丰度和生物量的比较表明，渤海的生境已经在间歇式溢油释放后得到了恢复。在水柱状中观察到的较高油浓度和两种重金属、五种 PAHs、TOC、TOC/TN 的较高浓度以及 δC 值较低，加上近场样本中大型底栖生物生物量的减少，表明油和作业废物排放的慢性释放污染物对油田平台附近地区的影响。
