We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Environmental behavior of microplastic - heavy metal synergistic contamination in a typical urban-rural river network
AI summary Read the abstract
Researchers investigated the seasonal co-occurrence of microplastics and heavy metals in urban and rural rivers in a Chinese inland city. They found that both pollutant types were present in all water samples and that microplastics can adsorb heavy metals, potentially increasing the combined environmental risk. The study reveals that river networks connecting urban and rural areas serve as pathways for spreading this dual contamination.
Microplastics (MPs) and heavy metals (HMs) in rivers pose a global threat to human health and the ecological environment. Given the differences in pollutant classes, the co-occurrence and interactions between MPs and HMs are still poorly understood. In this study, the co-occurrence of MPs and HMs across different seasons were investigated in the urban-rural rivers of a typical inland city, China. MPs and HMs were detected in all water samples at the wet and dry seasons, and the differences in the abundance of MPs and HMs between the two water periods were not significant. The abundance of MPs was higher in urban and industrial zones than that in agricultural zones. The predominant form and composition of MPs was granules (44.49 %) and polyethylene terephthalate (PET, 85.40 %), with the most common color being transparent (48.99 %). HMs (Mn, Cu, Cr, Zn, Cd, Pb) were detected in MPs, with the strongest adsorption capacity observed for Mn (K pw = 4.90). Based on the correlation analysis and structural equation model, the polymer type of MPs (path coefficient = 0.3798) and the content of HMs in water (path coefficient = 0.3391) were the significant influence drivers on the adsorption of HMs by MPs. The Hazard Index revealed a medium risk of MPs in the urban-rural rivers, while the Pollution Load Index indicated a low risk of the river water body. These findings suggest that synergistic pollution from MPs and HMs may increase the ecological risk in river water, and the results provide important data for understanding the characteristics of the urban-rural rivers. • Microplastics (MPs) and heavy metals (HMs) were found in the typical urban-rural river network. • Various HMs were absorbed on MPs, and the strongest adsorption capacity observed for Mn. • The polymer types and the HMs content in water were the main drivers for the adsorption of HMs by MPs. • MPs and MHs may cause ecological risk to the urban-rural rivers.
More Papers Like This
Occurrence, environmental behavior, and co-pollution of microplastics with HMs in urban channelized rivers
AI summary Read the abstract
Researchers investigated the occurrence, environmental behavior, and co-pollution dynamics of microplastics and heavy metals in urban channelized rivers, examining how frequent anthropogenic activities introduce these contaminants into aquatic ecosystems. The study characterized spatial distribution patterns and interactions between microplastics and heavy metals, contributing to understanding combined pollution risks in urban waterways.
Microplastic acts as a carrier for pollutants and its potential risks in inland rivers focusing on China
AI summary Read the abstract
This review examines the occurrence of microplastics in inland rivers across China and their role as carriers of co-pollutants such as heavy metals, persistent organic compounds, and pathogens. Rivers transport microplastics from urban and agricultural sources toward the ocean, and the particle-bound contaminants they carry may amplify ecological and human health risks.
The Interaction of Microplastics and Heavy Metals Under Different Hydrological Regulation in the Typical Urban–Rural River Sediment
AI summary Read the abstract
Scientists studying rivers that flow through both cities and farmland found that tiny plastic particles (microplastics) can act like magnets for toxic heavy metals like chromium and cadmium, with the amount of metal buildup changing depending on the season and weather patterns. This matters because these plastic-metal combos can travel through waterways into the food chain and drinking water, potentially delivering a "double dose" of contamination that's more harmful than either plastic or metal pollution alone.
Microplastic pollution in sophisticated urban river systems: Combined influence of land-use types and physicochemical characteristics
AI summary Read the abstract
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.
Interaction and bacterial effects of microplastics pollution on heavy metals in hyporheic sediments of different land-use types in the Beiluo River Basin
AI summary Read the abstract
Researchers studied how microplastics and heavy metals interact in river sediments across different land-use types in a Chinese river basin. They found that microplastics concentrated more heavily in shallow sediments and that the metals detected on microplastic surfaces were present at much higher levels than in surrounding sediment. The study suggests that microplastics may serve as concentrators and carriers of heavy metal contamination, potentially amplifying pollution risks.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.