期刊
MARINE POLLUTION BULLETIN
卷 86, 期 1-2, 页码 562-568出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2014.06.032
关键词
Suspended microplastic; Yangtze Estuary; East China Sea; Marine debris
资金
- Ministry of Science and Technology of China [2010CB951203]
- Natural Science Foundation of Shanghai Municipality [11ZR1438800]
- State Key Laboratory of Estuarine and Coastal Research of China [200KYYW03]
Levels of microplastics (MPs) in China are completely unknown. This study characterizes suspended MPs quantitatively and qualitatively for the Yangtze Estuary and East China Sea. MPs were extracted via a floatation method. MPs were counted and categorized according to shape and size under a stereomicroscope. The MP densities were 4137.3 +/- 2461.5 and 0.167 +/- 0.138 n/m(3), respectively, in the estuarine and the sea samples. Plastic abundances varied significantly in the estuary. Higher densities in three sea trawls confirmed that rivers were the important sources of MP to the marine environment. Plastic particles (>5 mm) were observed with a maximum size of 12.46 mm, but MPs (0.5-5 mm) constituted more than 90% by number of items. The most frequent geometries were fibres, followed by granules and films. Plastic spherules occurred sparsely. Transparent and coloured plastics comprised the majority of the particles. This study provides clues in understanding the fate and potential sources of MPs. (C) 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.
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