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Issue 7, 2019
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Occurrence and distribution of microplastics in the surface water and sediment of two typical estuaries in Bohai Bay, China

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Abstract

Estuaries are considered to be seriously polluted by microplastics. As the most important water body in North China, the pollution level of microplastics in two typical estuaries (Haihe Estuary (HHE) and Yondingxinhe Estuary (YDXE)) of Bohai Bay is not well understood. The occurrence and distribution of microplastics in the surface water and sediment of HHE and YDXE were investigated. The mean concentration of microplastics in surface-water samples was 1485.7 ± 819.9 items per m3 for HHE and 788.0 ± 464.2 items per m3 for YDXE, respectively, whereas the concentration of microplastics in sediment was 216.1 ± 92.1 items per kg dw for HHE and 85.0 ± 40.1 items per kg dw for YDXE, respectively. The concentration of microplastics in surface-water and sediment-samples of HHE was higher than that of YDXE, though YDXE is a typical sewage-received river. Anthropogenic activities and the river input were the main sources of microplastic pollution in estuarine areas. Sewage rivers could be point sources of microplastic pollution on a small scale. The small size (particle diameter < 1 mm) of microplastics was a dominant feature, the most abundant shape was fiber and colored microplastics were found widely in YDXE and HHE. We provided detailed information on microplastic pollution to support their control and management in HHE and YDXE.

Graphical abstract: Occurrence and distribution of microplastics in the surface water and sediment of two typical estuaries in Bohai Bay, China

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Article information


Submitted
01 Apr 2019
Accepted
16 May 2019
First published
17 May 2019

Environ. Sci.: Processes Impacts, 2019,21, 1143-1152
Article type
Paper

Occurrence and distribution of microplastics in the surface water and sediment of two typical estuaries in Bohai Bay, China

N. Wu, Y. Zhang, X. Zhang, Z. Zhao, J. He, W. Li, Y. Ma and Z. Niu, Environ. Sci.: Processes Impacts, 2019, 21, 1143
DOI: 10.1039/C9EM00148D

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