Factors influencing the occurrence and distribution of microplastics in coastal sediments: From source to sink
文献类型： 外文期刊
作者： Sun, Xuemei 1 ; Wang, Teng 3 ; Chen, Bijuan 1 ; Booth, Andy M. 4 ; Liu, Shufang 1 ; Wang, Rongyuan 5 ; Zhu, Lin 1 ; Zhao, 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China
3.Ocean Univ China, Coll Environm Sci & Engn, Qingdao 266100, Peoples R China
4.SINTEF Ocean, Dept Environm & New Resources, N-7465 Trondheim, Norway
5.State Ocean Adm, North China Sea Environm Monitoring Ctr, Qingdao 266033, Peoples R China
关键词： Microplastics; Diversity index; Grain size; Semi-enclosed bay; Coastal zone
期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：9.038； 五年影响因子：8.512 ）
ISSN： 0304-3894
年卷期： 2021 年 410 卷
页码：
收录情况： SCI
摘要： Microplastic (MP) pollution is attracting growing global attention, but little is known about the factors influencing MP occurrence and distributions in marine sediments. Here, MPs were sampled from the sediments of two semi-enclosed bays (Jinghai Bay and Laizhou Bay) and two coastal open zones (Lancelet Reserve and Solen grandis Reserve) in China. The order of MP abundance was Jinghai Bay > Laizhou Bay > Lancelet Reserve > Solen grandis Reserve. Average MP diversity indices for Laizhou Bay (1.84 ? 0.18), Lancelet Reserve (1.59 ? 0.43), S. grandis Reserve (1.58 ? 0.89), and Jinghai Bay (1.43 ? 0.14) revealed Laizhou Bay had the most complicated MP sources. A significant negative correlation between MP abundance and sediment grain size occurred in the semi-enclosed coastal zones (p = 0.004, r = -0.618) rather than in the open coastal zones (p = 0.051, r = -0.480), indicating small sediment particles can strongly enhance MP accumulation in semi-enclosed costal sediments. Although anthropogenic activities influence the MP distribution at source, the composition of regional and local sediments might impact MP occurrence in semi-enclosed coastal zones from the sink. These results help to improve our understanding of the fate and inventory of MPs in coastal sediments.
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