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

第一作者： Li, Qingqing

作者： Li, Qingqing;Zhu, Lixin;Bai, Mengyu;Wang, Xiaohui;Jiang, Chunhua;Zong, Changxing;Zhang, Feng;He, Yinan;Wu, Ruiming;Li, Daoji;Li, Qingqing;Zhu, Lixin;Bai, Mengyu;Wang, Xiaohui;Jiang, Chunhua;Zong, Changxing;Zhang, Feng;He, Yinan;Wu, Ruiming;Li, Daoji;Li, Qingqing;Zhu, Lixin;Bai, Mengyu;Wang, Xiaohui;Jiang, Chunhua;Zong, Changxing;Zhang, Feng;He, Yinan;Wu, Ruiming;Li, Daoji;Wei, Nian;Li, Changjun;Dong, Xuri;Liu, Kai

作者机构：

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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