Polycyclic aromatic hydrocarbons in the surface seawater of the East China Sea and application in depositional fluxes calculation

Lin Tian; Hu Limin; Guo Zhigang

doi:10.3969/j.issn.0253-4193.2014.08.002

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Lin Tian, Hu Limin, Guo Zhigang. Polycyclic aromatic hydrocarbons in the surface seawater of the East China Sea and application in depositional fluxes calculation[J]. Haiyang Xuebao, 2014, 36(8): 12-18. doi: 10.3969/j.issn.0253-4193.2014.08.002

Citation:

Lin Tian, Hu Limin, Guo Zhigang. Polycyclic aromatic hydrocarbons in the surface seawater of the East China Sea and application in depositional fluxes calculation[J]. Haiyang Xuebao, 2014, 36(8): 12-18. doi: 10.3969/j.issn.0253-4193.2014.08.002

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Polycyclic aromatic hydrocarbons in the surface seawater of the East China Sea and application in depositional fluxes calculation

doi: 10.3969/j.issn.0253-4193.2014.08.002

1.
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
2.
Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
3.
Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China

Received Date: 2013-10-11
Rev Recd Date: 2013-11-26

Abstract

Abstract

Eleven surface seawater samples collected over the East China Sea (ECS) were analyzed for polycyclic aromatic hydrocarbons (PAHs) in dissolved phase. An estimation of particulate-phase PAH fluxes was performed by using the organic carbon adsorption coefficient (K_oc) from an experimental data and total organic carbon burial flux in the ECS. The measured concentrations of total 15 dissolved-phase PAHs in the water samples ranged from 412 to 1 032 ng/L,with the average value of (701±392) ng/L,which were predominated by the three ring PAHs. It is estimated that the concentrations of 15 PAHs in particulate phase were from 20 to 28 μg/g and the total deposition flux of the ECS was from 150 to 210 t/a. The estimated results are consistent with measured concentrations and fluxes of PAHs in the sediments,suggesting feasibility of Koc values-based method for rapid estimation of deposition fluxes of PAHs in this area. The design and implementation of the method is a new quantitative way attempt to estimate PAH fluxes in marine sediment.
- PAHs,
- water,
- distribution between the dissolved and the particulate phase,
- depositional flux,
- East China Sea

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References(32)

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