期刊
ENVIRONMENTAL POLLUTION
卷 258, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2019.113232
关键词
Microplastics; Wetland; Human activities; Polyethylene terephthalate; Polycarbonate
资金
- National Natural Science Foundation of China [41807487, 41722304]
- Natural Science Foundation of Tianjin, China [4030180236, 18JCZDJC33900, 19JCYBJC24000]
- 111 Program of the Ministry of Education of China [T2017002]
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education of China)
Microplastics (MPs) are widespread in the environment including coastal wetlands. The influence of different types and intensities of human activities on the occurrence of MPs in coastal wetlands is still unknown. The aim of this study was to investigate the distribution of MPs and the contribution of human activities in different areas of Yellow River Delta wetland. MPs were widely detected in different areas of the wetland even in the protection area with little human activities. Direct human activities resulted in more severe MPs contamination in the protection area than the tourism area. In the soil of different areas, the MPs abundances ranged from 136 to 2060 items/kg. The concentrations of polyethylene terephthalate (PET) ranged from 536 to 660 mu g/kg, and the concentrations of polycarbonate (PC) ranged from 83.9 to 196 mu g/kg. The MP abundances of the three areas had significant correlations with PET concentrations. These results indicate that the direct influence of human activities has much greater contribution than indirect influence. These results also suggest that PET concentration can be used as a potential marker of MPs contamination in wetland soils. (C) 2019 Elsevier Ltd. All rights reserved.
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