We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Distribution characteristics of microplastics in storm-drain inlet sediments affected by the types of urban functional areas, economic and demographic conditions in southern Beijing
Summary
This study analyzed microplastics in storm-drain inlet sediments across agricultural, commercial, and residential districts in Beijing, finding distinct distribution patterns linked to land use type. Storm-drain inlets were identified as a critical link in transporting microplastic pollutants from urban runoff into receiving waters.
A storm-drain inlet is an important link in the transport of microplastic pollutants in urban rainwater runoff. In three functional districts (agricultural, commercial, and residential) from Beijing South 2nd Ring Road to South 6th Ring Road, microplastics in storm-drain inlet sediments were analyzed for abundance and characteristics. The abundance of microplastics in the collected samples ranged from 1121 ± 247 items kg to 7393 ± 491 items kg. Among the sample areas, the commercial area had the greatest abundance (11094 items kg), while the agricultural area had the lowest (833 items kg). The microplastics in the samples were mainly fragments, accounting for 50.4%. Microplastics of less than 1 mm accounted for 74.8%. The color of microplastics was diverse, with colored MPs accounting for 26% and transparent ones for 47.8%. Most of the polymers detected were PET, PS, and PP, which are the most commonly used polymers. Overall, the results provide baseline data on microplastic pollution and its associated risks, in addition to guidelines for controlling runoff pollution.
Sign in to start a discussion.
More Papers Like This
Microplastic pollution in urban stormwater inlet sediments influenced by land use type of runoff drainage area
Researchers analyzed microplastic contamination in urban stormwater inlet sediments across different land use types in Ma'anshan City, China. They found microplastics present in all locations, with sediments near main roads showing the highest contamination at over 1,100 items per kilogram, roughly double that of other land use types. The study reveals that polypropylene was the dominant polymer across all areas, and that the characteristics of microplastic pollution vary systematically with surrounding land use patterns.
Urban pipeline rainwater runoff is an important pathway for land-based microplastics transport to inland surface water: A case study in Beijing
This study characterized microplastics in urban rainwater pipeline runoff draining from different land-use types, finding that pipelines are an important but understudied pathway for transporting land-based microplastics to surface water. Abundance and polymer composition varied by land use, with commercial and road-adjacent catchments showing the highest loads.
Microplastic pollution in sophisticated urban river systems: Combined influence of land-use types and physicochemical characteristics
This study assessed microplastic pollution across an urban river network in China, finding that land-use type and water physicochemical properties jointly influence microplastic distribution, with industrial and residential areas contributing highest loads.
Microplastics discharged from urban drainage system: Prominent contribution of sewer overflow pollution
Researchers evaluated the abundance and distribution of microplastics in urban drainage systems in coastal Chinese cities, with a focus on sewer overflow events during storms. The study found that overflow pollution during wet weather is a prominent contributor to microplastic discharge into urban water bodies, with meteorological conditions and land use patterns significantly influencing microplastic transport and release.
Qualitative and quantitative analysis of microplastics in runoff sediments and their correlation with land use and occupation in an urban area in the city of Bauru-SP
Researchers analysed the qualitative and quantitative distribution of microplastics in urban runoff sediments across different land use categories in Bauru, Sao Paulo, Brazil, including social housing, traditional residential, high-income residential, commercial, and industrial zones. Results indicated that microplastic abundance in transported sediments correlated with land use intensity, with more densely populated and active areas generating higher microplastic loads entering urban drainage networks.