摘要
城市是人类活动的缩影,因此城市河流是微塑料污染的一个关键输送者。了解城市河流中的微塑料赋存特征,对于减少河流微塑料的排放具有潜在的重要意义。对宁波市的干流和支流水体中微塑料的丰度进行了定量研究,水体微塑料丰度为0.81~69.92个/L,干流微塑料平均丰度为(38.08±18.75)个/L,支流微塑料平均丰度为(3.25±2.62)个/L。微塑料的类型以聚对苯二甲酸乙二醇酯(PET,数量占比62.04%)为主;形状以线状(数量占比91.99%)为主,且粒径越小占比越大,其中≤500、500~1000μm的数量占比分别为40.81%、32.95%;颜色以无色透明为主,数量占比为60.39%,其次为黑色,数量占比为32.93%。宁波市城市水体中微塑料的分布主要受到人类活动及垃圾管理策略的影响。
The urban is a microcosm of human activity,so urban rivers are key transporter of microplastics pollution.Understanding the occurrence characteristics of microplastics in urban rivers is potentially important for reducing the discharge of microplastics in rivers.The abundance of microplastics in the main stream and tributaries of Ningbo was quantitatively studied.The abundance of microplastics in Ningbo water ranged from 0.81 to 69.92 pieces/L,the average abundance of microplastics in main stream was(38.08±18.75)pieces/L,and the average abundance of microplastics in tributary was(3.25±2.62)pieces/L.The type of microplastics was polyethylene terephthalate(62.04%).The shape was mainly linear,accounting for 91.99%.The proportion of microplastics with small particle size was higher,≤500μm accounting for 40.81%,500~1000μm accounting for 32.95%.Colorless and transparent accounted for the largest proportion 60.39%,followed by black(32.93%).The distribution of microplastics in urban water is affected by human activities and waste management strategies.
作者
商卫纯
郑吉
卢玺丹
陈胤再
SHANG Weichun;ZHENG Ji;LU Xidan;CHEN Yinzai(Ningbo Research Institute of Ecological and Environmental Sciences,Ningbo Zhejiang 315012)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2022年第9期1157-1163,共7页
Environmental Pollution & Control
基金
宁波市科研院所专项资金项目(No.2019A80001)。
关键词
微塑料
城市水体
赋存特征
影响因素
microplastics
urban waterbody
occurrence characteristics
affecting factors
