中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Sedimentary records of polycyclic aromatic hydrocarbons from three enclosed lakes in China: Response to energy structure and economic development

文献类型:期刊论文

作者Hongchen Wu; Jingfu Wang; Jianyang Guo; Xinping Hu; Jingan Chenn
刊名Environmental Pollution
出版日期2023
卷号318页码:120929
关键词Polycyclic Aromatic Hydrocarbons Lake Sediment Record Anthropogenic Activities
DOI10.1016/j.envpol.2022.120929
英文摘要

Historical polycyclic aromatic hydrocarbon (PAH) pollution was explored through the sedimentary records of three lakes: Huguangyan Maar Lake (HGY) in South China, Mayinghai Lake (MYH) in North China, and Sihailongwan Lake (SHLW) in Northeast China. In these three lakes, the PAH concentrations in sediments are still rising, showing the different trend to lakes in developed countries. PAH pollution in South China occurred from 1850, much earlier than the increases since 1980 observed in North and Northeast China. The temporal trends of PAH concentrations in lake sediments are highly correlated with local economic development. Spatially, although the region where HGY is located has the highest gross domestic product, higher fluxes of PAHs were found in MYH sediments, indicating that atmospheric PAH pollution in North China might be more serious, and that PAH pollution is not fully correlated with economic development. Source analysis suggested that the PAHs in lake sediments are mainly derived from oil leaks, coal and biomass combustion, vehicle emissions, and diagenesis. Positive matrix factorization (PMF) model revealed that the contribution of vehicle emissions and coal combustion to PAHs has increased significantly in the past 40 years. Benzo(a)pyrene equivalent (BaPE) in the surface sediments of MYH and SHLW were similar and higher than in HGY. In HGY, vehicle emissions posed the highest toxic risk, followed by coal combustion. However, in MYH, the toxicity risk of vehicle emissions was close to that of coal and biomass combustion due to the highly developed coal industry in Shanxi Province. In SHLW, the contribution of fossil fuel combustion to BaPE was significantly higher than that of biomass combustion. This study provides important information for understanding PAH pollution affected by anthropogenic activities in the Anthropocene and provides a scientific basis for formulating PAH pollution control strategies.

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语种英语
源URL[http://ir.gyig.ac.cn/handle/42920512-1/13440]  
专题地球化学研究所_环境地球化学国家重点实验室
作者单位1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China
2.University of Chinese Academy of Sciences, Beijing, 100049, PR China
推荐引用方式
GB/T 7714
Hongchen Wu,Jingfu Wang,Jianyang Guo,et al. Sedimentary records of polycyclic aromatic hydrocarbons from three enclosed lakes in China: Response to energy structure and economic development[J]. Environmental Pollution,2023,318:120929.
APA Hongchen Wu,Jingfu Wang,Jianyang Guo,Xinping Hu,&Jingan Chenn.(2023).Sedimentary records of polycyclic aromatic hydrocarbons from three enclosed lakes in China: Response to energy structure and economic development.Environmental Pollution,318,120929.
MLA Hongchen Wu,et al."Sedimentary records of polycyclic aromatic hydrocarbons from three enclosed lakes in China: Response to energy structure and economic development".Environmental Pollution 318(2023):120929.

入库方式: OAI收割

来源:地球化学研究所

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