文献类型：期刊文献

英文题名：Spatial Distribution and Sources of Polycyclic Aromatic Hydrocarbons in Sediments from Dachan Bay, Shenzhen City

作者：Huang, Wenjing[1];Liu, Beibei[1];Zhao, Hui[1,2,3,4];Zhao, Lirong[1];Zhang, Jibiao[1]

机构：[1]Guangdong Ocean Univ, Coll Chem & Environm Sci, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Cooperat Res Ctr Offshore Marine Environm Change, Zhanjiang 524088, Peoples R China;[3]Southern Marine Sci & Engn Guangdong Lab, Zhuhai 519082, Peoples R China;[4]Guangdong Ocean Univ, Res Ctr Coastal Evironmental Protect & Ecol Resili, Zhanjiang 524088, Peoples R China

年份：2023

卷号：15

期号：10

外文期刊名：WATER

收录：SCI-EXPANDED(收录号：WOS:000996650500001)、、EI(收录号：20232314180252)、Scopus(收录号：2-s2.0-85160664963)、WOS

基金：This research was funded by the National Natural Science Foundation of China, grant number 42076162.

语种：英文

外文关键词：polycyclic aromatic hydrocarbons; sediments; Dachan Bay; Shenzhen city

外文摘要：The study investigated the composition and content of s(15)PAH in the surface and core sediments from Dachan Bay (DCB) in Shenzhen city and discussed the effects of urban development and regional energy structure on the marine environment through the spatial distribution, vertical profile, and sources of s(15)PAH. The results indicated that the concentrations of s(15)PAH in the sediments of DCB ranged between 299 ng/g and 2336 ng/g in the surface sediments and between 65 ng/g and 994 ng/g in the core sediments. The horizontal spatial distribution of PAHs content with decreasing concentrations from the coastal to central areas implied the land-based input of PAHs. The vertical profile of high PAHs concentration in 0 cm-60 cm suggested that the PAHs pollution is attributed to the urban development of Shenzhen since 1950, especially after the 1980s. According to features of the low molecular weight (LMW)/high molecular weight (HMW), PAHs diagnostic ratios and their relationships with total organic carbon (TOC) and oil, the pyrogenic PAHs were mainly from the combustion of petroleum and byproducts in the surface and 0 cm-60 cm sediments but from the combustion of biomass in 60 cm-190 cm sediments, which corresponded with the variation of energy structure in surrounding areas. This study suggested that urban development and regional energy structure have a great impact on PAHs distribution in DCB and further controls of land-based pollutant emissions are still needed.