Status of POPs accumulation in the Yellow River Delta: From distribution to risk assessment

MARINE POLLUTION BULLETIN

卷:107

Article

Li, Jing^1,2  Chen, Chunli²  Li, Fadong¹ 

[1] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China

[2] Nanchang Univ, Sch Environm & Chem Engn, Key Lab Poyang Lake Environm & Resource Utilizat, MOE, Nanchang 330047, Peoples R China

关键词: POPs;    Environmental occurrence;    Risk assessment;    Origins;    Yellow River estuary;    Oil field;   

DOI  :  10.1016/j.marpolbul.2016.03.063

来源: Elsevier

【 摘 要 】

The Yellow River Delta (YRD) is a large region of China with complex pollution sources and a long history of environmental deterioration. Despite this, relatively little data exists on the status of important contaminants of concern in this region. Here, we review the literature on the status of key persistent organic pollutants (POPs) of concern including organochlorine pesticides (OCPs), polycyclic aromatic hydrocarbons (PAHs), and polychlorinated biphenyls (PCBs) in the YRD. Sources, source identification methods, and spatial distribution patterns are presented. Additionally, POPs contamination levels reported in the literature were evaluated against popular regulatory limits worldwide to form a basis for overall environmental health. Our review determined that OCPs in the YRD originated mainly from current pesticide use and past agricultural pesticide application. Sources of PAHs included petrochemical inputs, coal fired plants, and wood combustion. PCB levels were impacted by the petrochemical industry as well as waste disposal of PCB containing equipment. OCPs exhibited a spatial distribution pattern that increased along the urban-rural gradient, while the opposite was seen for PAHs and PCBs. Comparisons of POPs contamination levels in the YRD with popular regulatory limits suggest that the extent of PCB contamination all mediums (sediment, soil, water, and biota) exceeded that of PAHs and OCPs. Overall pollution levels in the YRD seem to be in control; however, levels from heavily polluted point sources raise numerous concerns about the ecological health of the region and require more attention from regulatory authorities. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

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