Journal
MARINE POLLUTION BULLETIN
Volume 99, Issue 1-2, Pages 112-118Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2015.07.050
Keywords
Marine debris; Microplastics; Abundance; Beach survey; Hong Kong; Pearl River Estuary
Funding
- Hong Kong SAR Government, Research Grant Council Early Career Scheme [859413]
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Large plastic (>5 mm) and microplastic (0.315-5 mm) debris were collected from 25 beaches along the Hong Kong coastline. More than 90% consisted of microplastics. Among the three groups of microplastic debris, expanded polystyrene (EPS) represented 92%, fragments represented 5%, and pellets represented 3%. The mean microplastic abundance for Hong Kong was 5595 items/m(2). This number is higher than international averages, indicating that Hong Kong is a hotspot of marine plastic pollution. Microplastic abundance was significantly higher on the west coast than on the east coast, indicating that the Pearl River, which is west of Hong Kong, may be a potential source of plastic debris. The amounts of large plastic and microplastic debris of the same types (EPS and fragments) were positively correlated, suggesting that the fragmentation of large plastic material may increase the quantity of beach microplastic debris. (C) 2015 Elsevier Ltd. Al rights reserved.
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