Citation: | Xiao-yong Duan, Yan-xia Li, Xian-guo Li, Ping Yin, 2018. Historical records and the sources of polycyclic aromatic hydrocarbons in the East China Sea, China Geology, 1, 505-511. doi: 10.31035/cg2018058 |
The coastal cities are the most advanced regions in China. In the past few decades, the environment changed very significantly due to large scale human activities in the coastal regions. Polycyclic aromatic hydrocarbons (PAHs) in three dated sediment cores from the west coast of the Yellow Sea (core A01), the Yangtze River estuary (YRE; core A02) and the Oujiang River estuary (ORE; core A03) were analyzed to reconstruct the environmental evolutionary process of the east China coastal region over the past century. In the three cores, PAHs concentrations were increased rapidly. Lower concentrations of PAHs were measured in core A02 than in cores A01 and A03. The vertical variation of PAHs in the YRE was dominated by the petrogenic sources. Historical records of PAHs in the ORE were controlled by pyrolytic sources. PAHs on the west coast of the Yellow Sea were contributed by the two sources.
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Locations of sampling sites (red dots). General circulation system (indicated by arrows) from Liu JP et al. (2007).
Down-core concentrations (upper x-axis) of the PAHs in A01 (a), A02 (b) and A03 (c).
Fossil fuel consumption. a–data are from National Bureau of Statistics of China (
Source identification using PAH ratios.
PAHs source identification by principle component analysis. Loading plot (a) and scoring plot (b). Samples in the cores were numbered continuously from top to bottom.