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Effect of organic carbon enrichment on halogenated organic pollutants in wetland sediments of the Yellow River Estuary and Jiaozhou Bay, China

文献类型：期刊论文

作者Zuo, Zi-Cen4,5; Liu, Shan-Shan2; Ni, Jie4,5; Cao, Ya-Li4,5; He, Zhen4,5; Yang, Gui-Peng1,3,4,5
刊名ENVIRONMENTAL RESEARCH
出版日期2025-08-15
卷号279页码:12
关键词Coastal wetland Halogenated polycyclic aromatic hydrocarbons (HPAHs) Halogenated organic pollutants (HOPs) Total organic carbon (TOC) Ecological risk assessment
ISSN号0013-9351
DOI10.1016/j.envres.2025.121771
通讯作者He, Zhen(zhenhe@ouc.edu.cn) ; Yang, Gui-Peng(gpyang@mail.ouc.edu.cn)
英文摘要Coastal wetlands, vital ecosystems, are threatened by anthropogenic activities and act as significant sinks for halogenated organic pollutants (HOPs). Despite the persistent toxicity and ecological risks associated with HOPs, their spatial distribution and environmental behavior in coastal sediments, particularly the role of total organic carbon (TOC) in modulating their fate, remain poorly understood. We investigated the contamination characteristics of 25 halogenated polycyclic aromatic hydrocarbons (HPAHs) in the surface sediments of two coastal wetlands, the Yellow River estuary and Jiaozhou Bay, with different environmental backgrounds. HPAH concentrations were higher in Jiaozhou Bay (23.81-121.78 ng g-1, mean 50.58 +/- 28.85 ng g-1) than in the Yellow River estuary (14.69-30.12 ng g-1, mean 23.48 +/- 5.42 ng g-1), influenced by hydrodynamic conditions and anthropogenic activities. While TOC showed a weak correlation with HPAHs under the low TOC levels and dynamic sedimentary conditions of the Yellow River estuary, it showed significant positive correlations with most HPAHs in Jiaozhou Bay, where limited water exchange enhanced pollutant accumulation. Risk assessment based on the risk quotient (RQ) indicated that the overall RQ was lower in Jiaozhou Bay, despite the higher mean HPAH concentration (2.2 times higher than in the Yellow River estuary), which may be due to the higher TOC content that enhances adsorption and reduces bioaccessibility. Fish and Daphnia in both wetlands were almost always at minimal risk levels, although localized elevated risks may occur in areas with higher pollution loads. These findings highlight the importance of integrating TOC and hydrodynamic factors in coastal pollution management.
WOS关键词POLYCYCLIC AROMATIC-HYDROCARBONS ; WASTE-WATER ; SOURCE IDENTIFICATION ; SURFACE SEDIMENTS ; ECOLOGICAL RISKS ; SOUTH CHINA ; BIOAVAILABILITY ; SOILS ; CONTAMINANTS ; ENVIRONMENT
资助项目National Natural Science Foundation of China[42276039] ; Natural Science Foundation of Shandong Province[ZR2021MD034] ; Special Fund

for the Taishan Scholars Project[tspd20240805]
WOS研究方向Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
语种英语
WOS记录号WOS:001503904100001
出版者ACADEMIC PRESS INC ELSEVIER SCIENCE
源URL[http://ir.qdio.ac.cn/handle/337002/202223]  
专题海洋研究所_海洋生态与环境科学重点实验室
通讯作者He, Zhen; Yang, Gui-Peng
作者单位1.Qingdao Marine Sci & Technol Ctr, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
3.Ocean Univ China, Inst Marine Chem, Qingdao 266100, Peoples R China
4.Ocean Univ China, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Qingdao 266100, Peoples R China
5.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, Peoples R China
推荐引用方式
GB/T 7714		 Zuo, Zi-Cen,Liu, Shan-Shan,Ni, Jie,et al. Effect of organic carbon enrichment on halogenated organic pollutants in wetland sediments of the Yellow River Estuary and Jiaozhou Bay, China[J]. ENVIRONMENTAL RESEARCH,2025,279:12.
APA Zuo, Zi-Cen,Liu, Shan-Shan,Ni, Jie,Cao, Ya-Li,He, Zhen,&Yang, Gui-Peng.(2025).Effect of organic carbon enrichment on halogenated organic pollutants in wetland sediments of the Yellow River Estuary and Jiaozhou Bay, China.ENVIRONMENTAL RESEARCH,279,12.
MLA Zuo, Zi-Cen,et al."Effect of organic carbon enrichment on halogenated organic pollutants in wetland sediments of the Yellow River Estuary and Jiaozhou Bay, China".ENVIRONMENTAL RESEARCH 279(2025):12.

入库方式： OAI收割

来源：海洋研究所

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