Transport mechanism of microplastics from a still water system to a dynamic estuarine system: A case study in Macao SAR
文献类型： 外文期刊
作者： Li, Qingqing 1 ; Zhu, Lixin 1 ; Wei, Nian 4 ; Bai, Mengyu 1 ; Liu, Kai 7 ; Wang, Xiaohui 1 ; Jiang, Chunhua 1 ; Zong, Changxing 1 ; Zhang, Feng 1 ; Li, Changjun 5 ; Dong, Xuri 6 ; He, Yinan 1 ; Wu, Ruiming 1 ; Li, Daoji 1 ;
作者机构： 1.East China Normal Univ, State Key Lab Estuarine & Coastal Res, 500 Dongchuan Rd, Shanghai 200062, Peoples R China
2.IOC UNESCO, Reg Training & Res Ctr Plast Marine Debris & Micro, Beijing 200241, Peoples R China
3.East China Normal Univ, Hainan Res Inst, Sanya 572025, Peoples R China
4.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, 300 JunGong Rd, Shanghai 200090, Peoples R China
5.Yantai Univ, Ocean Sch, Yantai 264005, Peoples R China
6.Jiangsu Ocean Univ, Jiangsu Key Lab Marine Bioresources & Environm, Lianyungang 222005, Peoples R China
7.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, England
关键词： Microplastic; Lotic ecosystem; Lentic ecosystem; Transport mechanism; Pearl River Estuary
期刊名称：MARINE POLLUTION BULLETIN （ 影响因子：4.9； 五年影响因子：5.6 ）
ISSN： 0025-326X
年卷期： 2025 年 218 卷
页码：
收录情况： SCI
摘要： Significant amount of microplastics (< 5 mm) were transported into the South China Sea via Pearl River Estuary. However, comprehensive studies on the occurrence and retention of microplastics in this estuarine system were still limited. To fill this gap, we investigated the distribution of microplastics in still-water ecosystems and running water ecosystems in the west bank of the Pearl River Estuary. Microplastics were found in both waterways and lakes. The results of the Manta trawl (330 mu m mesh) yielded an average abundance of 0.66 +/- 0.61 n/m(3) in waterways and 5.66 +/- 3.47 n/m(3) in lakes. Polyethylene (PE) and polypropylene (PP) were the most abundant polymers in water bodies. The main source of microplastics in waterways was riverine inputs, and microplastics in lakes mainly originated from the surrounding terrestrial environment. Lakes, which were less mobile than rivers, tended to act as reservoirs for microplastic transport. This study highlights the diversity of riverine microplastics during transport and improves our knowledge of the sources and transport mechanisms of microplastics in estuarine waters.
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