• 中文核心期刊
  • 中国科技核心期刊
  • ISSN 1007-6336
  • CN 21-1168/X

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Volume 34 Issue 1
Jan.  2015
Article Contents

Citation:

Environmental quality of petroleum hydrocarbons in the surface sediment of the oil and gas exploration zone in the central of Bohai Sea

  • Received Date: 2013-10-24
    Accepted Date: 2013-12-04
  • The concentrations of petroleum hydrocarbons (PHs) from the surface and core sediments, which collected from oil and gas exploration area in central Bohai Sea, were analyzed, and their environmental quality was evaluated. The results showed that the PHs contents in surface sediments ranged from 10.15106 to 151.72106, with an average of 55.99106 in the study area. Most stations are medium pollution, some stations appear higher and severe pollution. High PHs value areas locate in the Bohai Bay coast, indicating that PHs contamination is significantly affected by coastal human sewage and oil and gas extraction. Before the 1930s, the PHs concentrations were in a low background value, following by an increasing trend resulting from the impact of human activities. The PHs evolution in the area agrees with the development periods of oil and gas exploration in the Bohai Sea. The oil spill event of the Platform Penglai 19-3 in June 2011 has affected the adjcent sediments obviously, but the impact has significantly reduced after 1 year.
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Environmental quality of petroleum hydrocarbons in the surface sediment of the oil and gas exploration zone in the central of Bohai Sea

  • 1. Key Laboratory of Submarine Geosciences and Technology of Ministry of Education, Ocean University of China, Qingdao 266100, China;
  • 2. Key Laboratory of Marine Sedimentology & Environmental Geology, SOA, Qingdao 266061, China;
  • 3. State Oceanic Administration Key Laboratory of Sea-area Management Technology, SOA, Dalian 116083, China

Abstract: The concentrations of petroleum hydrocarbons (PHs) from the surface and core sediments, which collected from oil and gas exploration area in central Bohai Sea, were analyzed, and their environmental quality was evaluated. The results showed that the PHs contents in surface sediments ranged from 10.15106 to 151.72106, with an average of 55.99106 in the study area. Most stations are medium pollution, some stations appear higher and severe pollution. High PHs value areas locate in the Bohai Bay coast, indicating that PHs contamination is significantly affected by coastal human sewage and oil and gas extraction. Before the 1930s, the PHs concentrations were in a low background value, following by an increasing trend resulting from the impact of human activities. The PHs evolution in the area agrees with the development periods of oil and gas exploration in the Bohai Sea. The oil spill event of the Platform Penglai 19-3 in June 2011 has affected the adjcent sediments obviously, but the impact has significantly reduced after 1 year.

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