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Sources and mass inventory of sedimentary polycyclic aromatic hydrocarbons in the Gulf of Thailand: Implications for pathways and energy structure in SE Asia
Limin Hu;  Xuefa Shi;  Shuqing Qiao;  Tian Lin;  Yuanyuan Li;  Yazhi Bai;  Bin Wu;  Shengfa Liu;  Narumol Kornkanitnan;  Somkiat Khokiattiwong
2017
发表期刊Science of The Total Environment
卷号575页码:982-995
摘要

Surface sediments obtained from a matrix of 92 sample sites in the Gulf of Thailand (GOT) were analyzed for a comprehensive study of the distribution, sources, and mass inventory of polycyclic aromatic hydrocarbons (PAHs) to assess their input pathways and impacts of the regional land-based energy structure on the deposition of PAHs on the adjacent continental margins. The concentration of 16 PAHs in the GOT ranged from 2.6 to 78.1 ng/g (dry weight), and the mean concentration was 19.4 ± 15.1 ng/g. The spatial distribution pattern of 16 PAH was generally consistent with that of sediment grain size, suggesting the influence of regional hydrodynamic conditions. Correlation and principal component analysis of the PAHs indicated that direct land-based inputs were dominantly responsible for the occurrence of PAHs in the upper GOT and the low molecular weight (LMW) PAHs in the coastal regioncould be from petrogenic sources. A positive matrix factorization (PMF) model apportioned five contributors: petroleum residues (~ 44%), biomass burning (~ 13%), vehicular emissions (~ 11%), coal combustion (~ 6%), and air–water exchange (~ 25%). Gas absorption may be a significant external input pathway for the volatile PAHs in the open GOT, which further implies that atmospheric loading could be important for the sink of PAHs in the open sea of the Southeast Asia (SE Asia). The different PAH source patterns obtained and a significant disparity of PAH mass inventory in the sediments along the East and Southeast Asia continental margins can be ascribed mainly to different land-based PAH emission features under the varied regional energy structure in addition to the depositional environment and climatic conditions.

关键词Polycyclic Aromatic Hydrocarbons (Pahs) Mass Inventory Positive Matrix Factorization (Pmf) Receptor Model Asia Continental Margin Energy Structure
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/8366
专题环境地球化学国家重点实验室
作者单位1.Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
2.Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China
3.State Key Laboratory of Environmental Geochemistry, Guiyang Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
4.Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
5.Marine and Coastal Resource Research Center, Samut Sakhon Province 74000, Thailand
6.Phuket Marine Biological Center, Muaeng Phuket 83000, Thailand
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Limin Hu;Xuefa Shi;Shuqing Qiao;Tian Lin;Yuanyuan Li;Yazhi Bai;Bin Wu;Shengfa Liu;Narumol Kornkanitnan;Somkiat Khokiattiwong. Sources and mass inventory of sedimentary polycyclic aromatic hydrocarbons in the Gulf of Thailand: Implications for pathways and energy structure in SE Asia[J]. Science of The Total Environment,2017,575:982-995.
APA Limin Hu;Xuefa Shi;Shuqing Qiao;Tian Lin;Yuanyuan Li;Yazhi Bai;Bin Wu;Shengfa Liu;Narumol Kornkanitnan;Somkiat Khokiattiwong.(2017).Sources and mass inventory of sedimentary polycyclic aromatic hydrocarbons in the Gulf of Thailand: Implications for pathways and energy structure in SE Asia.Science of The Total Environment,575,982-995.
MLA Limin Hu;Xuefa Shi;Shuqing Qiao;Tian Lin;Yuanyuan Li;Yazhi Bai;Bin Wu;Shengfa Liu;Narumol Kornkanitnan;Somkiat Khokiattiwong."Sources and mass inventory of sedimentary polycyclic aromatic hydrocarbons in the Gulf of Thailand: Implications for pathways and energy structure in SE Asia".Science of The Total Environment 575(2017):982-995.
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