环境工程学报2023，Vol.17Issue(12)：3978-3987,10.DOI:10.12030/j.cjee.202308069
沁河(焦作段)入河排污水体微塑料污染特征及风险评价
Pollution characteristic and risk assessment of microplastics from sewage outlets in the Qin River(Jiaozuo section)
摘要
Abstract
Wastewater discharge is the major source of microplastic pollution in river.Identification of the characteristics of microplastics and their environmental risks in the discharged waters along sides of river is a prerequisite for microplastic pollution control.The Qin River(Jiaozuo section),a tributary of the Yellow River,was selected as the research object and a total of 7 water samples were collected from sewage outlets.The abundance and morphological features of microplastics,including size,shape and color,were classified by using a stereomicroscope.Microplastics were found in all sample sites,and the sizes varied mainly between 500 and 2 000 μm.In addition,the colors were mainly transparent and blue,and fibrous was the main shape of microplastics at each sample point.Further,the types of polymers at all points were identified using microinfrared spectrometry.The results showed that the main type of microplastics in the sewage outlets was polyethylene,which mainly came from agricultural production and residential emissions in the surrounding areas.The results of the environmental risk assessment showed that the study area was at a low risk level overall.The environmental risk posed by microplastics at the outfalls was not only related to its abundance,but also depended on the type of microplastics.Sample sites 1 and 6 both presented higher environmental risks as polyvinyl chloride was detected.Research results could provide theoretical basis and data support for the prevention and control of microplastic risks in the Yellow River and its tributaries.关键词
微塑料/排污口/污染特征/风险评价/丰度Key words
microplastics/sewage outlets/pollution characteristic/risk assessment/abundance分类
资源环境引用本文复制引用
张发文,李银月,邓正云,赵长民,刘曦,桂新,马丽..沁河(焦作段)入河排污水体微塑料污染特征及风险评价[J].环境工程学报,2023,17(12):3978-3987,10.基金项目
河南省重点研发与推广专项(232102320251) （232102320251）
