期刊
MARINE POLLUTION BULLETIN
卷 158, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2020.111383
关键词
Microplastics; Floatable plastic debris; Spatial variation; Surface waters; Estuary; South China
资金
- Hong Kong SAR Government, Research Grant Council (General Research Fund) [18300618]
- Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering, Guangdong Laboratory (Guangzhou) [GML2019ZD0404]
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences [ISEE2019ZR03, ISEE2018PY03, ISEE2018ZD02]
The estuaries of populated catchments have been documented as hotspots of plastic pollution. In this study, microplastics (0.355-5.0 mm) and large plastic debris ( > 5.0 mm) of surface water collected from the Inner Lingding Bay of the Pearl River Estuary (PRE) were quantified and categorized according to their size, shape, colour and composition. Both microplastics and large plastic debris were detected at all sampling sites with mean abundances of 2.376 +/- 0.700 n/m(3) and 0.110 +/- 0.039 n/m(3), respectively. Microplastics constitute 95.4% of the total abundance by number. The average microplastic concentration in the inner PRE was almost 3.5 times higher than that in the central PRE, indicating a positive correlation between plastic concentration and proximity to the river mouth. This result reveals the important role of rivers in transporting plastic debris from land to the oceans.
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