Occurrence and distribution of microplastics in an urban river: A case study in the Pearl River along Guangzhou City, China
Occurrence and distribution of microplastics in an urban river: A case study in the Pearl River along Guangzhou City, China
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DOI：
10.1016/j.scitotenv.2018.06.327
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发表时间：
2018-12-10
影响因子：
9.8
通讯作者：
Xu, Xiang-Rong
中科院分区：
文献类型：
--
作者：
Lin, Lang;Zuo, Lin-Zi;Xu, Xiang-Rong
微塑料作为全球环境中的新兴污染物，已成为学术界和公众关注的问题。目前对微塑料污染的认识主要集中在海洋环境，对淡水环境，特别是城市河流的关注较少。在这项研究中，微塑料采样的地表水和沉积物在14个地点位于珠江下游。这些采样点位于中国南方广州市的沿着，主要的土地用途是建筑区。地表水和沉积物中微塑料的丰度分别为379至7924个项目.m（-3）和80至9597 items.kg（-1）。聚乙烯和聚丙烯是常见的微塑料类型，分别占地表水和沉积物样品的64.3%和73.8%。纤维是水和沉积物样品中占主导地位的微塑性形状。不同地点地表水和沉积物中微塑料的丰度存在差异，可能受到多种因素的影响。研究结果表明，污水处理厂（WWTP）可以减少城市污水中的微塑料，这些污水最终沿沿着广州排入珠江。(C)2018 Elsevier B. V.版权所有。
Microplastics, as emerging contaminants in the global environment, have become a cause for concern for both academics and the public. The present understanding of microplastic pollution is primarily focused on marine environments, and less attention has been given to freshwater environments, in particular, to urban rivers. In this study, microplastics were sampled from surface water and sediments in 14 sites located in the lower course of the Pearl River. These sampling sites are located along Guangzhou of South China, with built-up areas being the dominant land use. The abundances of microplastics in surface water and sediments ranged from 379 to 7924 items.m(-3) and 80 to 9597 items.kg(-1), respectively. Polyethylene and polypropylene were the common types of microplastics, together accounting for 64.3% and 73.8% of surface water and sediment samples, respectively. Fibers were the dominant microplastic shapes in both water and sediment samples. The abundances of microplastics varied in surface water and sediments with each site, which might be affected by multiple factors. Our results indicated that wastewater treatment plants (WWTP) could reduce microplastics from municipal sewage which was finally discharged into the Pearl River along Guangzhou. (C) 2018 Elsevier B.V. All rights reserved.