Presence of aliphatic and polycyclic aromatic hydrocarbons in near-surface sediments of an oil spill area in Bohai Sea. Issue 1 (15th November 2015)

• Record Type: Journal Article
• Authors: Li, Shuanglin; Zhang, Shengyin; Dong, Heping; Zhao, Qingfang; Cao, Chunhui
• Is Part Of: Marine pollution bulletin. Volume 100:Issue 1(2015:Nov.)
• Page Start: 169
• Page End: 175
• Publication Date: 2015-11-15
• Subjects: Aliphatic hydrocarbons -- PAHs -- Near-surface sediments -- Oil spill -- Bohai Sea; Marine pollution -- Periodicals; Marine Biology -- Periodicals; Water Pollution -- Periodicals; Mer -- Pollution -- Périodiques; Publications périodiques; Pollution des mers; Lutte antipollution; Electronic journals; 363.7394
• DOI: 10.1016/j.marpolbul.2015.09.009
• Languages: English
• ISSNs: 0025-326X

Abstract

Abstract: In order to determine the source of organic matter and the fingerprint of the oil components, 50 samples collected from the near-surface sediments of the oil spill area in Bohai Sea, China, were analyzed for grain size, total organic carbon, aliphatic hydrocarbons (AHs), and polycyclic aromatic hydrocarbons (PAHs). The concentrations of C15–35 n-alkanes and 16 United States Environmental Protection Agency (US EPA) priority pollutant PAHs were found in the ranges of 0.88–3.48 μg g − 1 and 9.97–490.13 ng/g, respectively. The terrestrial organic matters characterized by C27–C35 n-alkanes and PAHs, resulting from the combustion of higher plants, are dominantly contributed from the transportation of these plants by rivers. Marine organic matters produced from plankton and aquatic plants were represented by C17–C26 n-alkanes in AHs. Crude oil, characterized by C17–C21 n-alkanes, unresolved complex mixture (UCM) with a mean response factor of C19 n-alkanes, low levels of perylene, and a high InP/(InP + BghiP) ratio, seeped into the oceans from deep hydrocarbon reservoirs, as a result of geological faults. Highlights: The spilled oil in sediments was identified from AHs and PAHs by GC-MS. The mixed-source model was established by the AHs, PAHs and bulk parameters. The primary organic matter was partly overprinted by the molecular of spilled oil.