江南地区缓流水体中微塑料的表现规律  

Microplastic Pollution Characteristic in Slow-flowing Water in the South Region of the Yangtze River

作　　者：吴香香 李大鹏[1] 贾海峰[2] 唐利 WU Xiang-xiang;LI Da-peng;JIA Hai-feng;TANG Li(School of Environmental Science and Engineering.Suzhou University of Science and Technology,Suzhou 215009,China;School of Environment Tsinghua University Beijing 100084,China;Shanghai Engineering Research Center of Landscape Water Environment,Shanghai 200031,China;Shanghai Landscape Architecture Design,Institute,Shanghai 200031,China)

机构地区：[1]苏州科技大学环境科学与工程学院,江苏苏州215009 [2]清华大学环境学院,北京100084 [3]上海生态景观水环境工程技术研究中心,上海200031 [4]上海市园林设计研究总院有限公司,上海200031

出　　处：《中国给水排水》2022年第3期62-66,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07205);江苏省研究生实践创新计划项目(SJKY19_2348)。

摘　　要：全球水环境中的微塑料污染日益引起人们的关注。针对江南水乡22条小型淡水河流,研究了微塑料(粒径<5 mm)的丰度、粒径、颜色和形状分布,调查了微塑料污染水平。研究发现,微塑料丰度为3.50~12.00个/L;就颜色而言,黑色微塑料占比最高,达到30.79%,高于蓝色(28.57%)、无色(21.59%)和红色(19.05%);就形状来说,纤维占比最高,达到85.40%,高于颗粒(5.40%)、薄膜(3.80%)和碎片(5.40%)。微塑料粒径主要集中在30~40μm,占比为26.25%。可见,苏州古城区22条河流均不同程度地受到微塑料污染。这为进一步了解内陆淡水生态系统中的微塑料变化规律,以及制定相应的污染防控措施提供了有力支撑。The microplastic pollution in the global water environment has attracted increasing attention. Microplastics in the surface water samples collected from 22 slow-flowing water in Suzhou, a typical southern water town, were investigated. It was found that the abundance of microplastics reached3.50-12.00 items/L. All of the plastics collected were categorized according to shape, color and size.Black(30.79%) was the dominant polymer;blue, transparent and red microplastics accounted for 28.57%,21.59% and 19.05%, respectively. Fiber(85.40%) was the most abundant type;particles, films and fragments accounted for 5.40%, 3.80% and 5.40%, respectively. The particle size of microplastics was mainly concentrated in 30-40 μm, accounting for 26.25%. The results suggest that different levels of microplastic pollution occurres in slow-flowing surface water which can provide valuable references for further understanding of microplastic pollution in inland freshwater ecosystems.

关 键 词：微塑料 丰度 纤维 江南水乡 

分 类 号：TU992[建筑科学—市政工程]