We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
20 resultsShowing papers similar to Impact Imposed by Urbanization on Soil Heavy Metal Content of Lake Wetland and Evaluation of Ecological Risks in East Dongting Lake in China
ClearCharacteristics of Soil Heavy Metal Pollution and Health Risks in Chenzhou City
Researchers analyzed 600 soil samples in Chenzhou City, China, and found that while most areas had low to moderate heavy metal contamination, about 3% of samples showed high ecological risk from metals like mercury and cadmium near industrial zones. While focused on heavy metals rather than microplastics, the study is relevant because microplastics in soil can absorb and transport these same toxic metals, potentially increasing human exposure through crops grown in contaminated areas.
Occurrence and Speciation of Pollutants in Guilin Huixian Wetland: Nutrients, Microplastics, Heavy Metals, and Emerging Contaminants
This review synthesizes the pollution status of the Huixian Wetland in Guilin, China, covering nutrients, heavy metals, emerging contaminants, and microplastics together, finding that growing industrial, agricultural, and aquaculture activities are degrading this ecologically valuable karst wetland. The combined pollutant lens provides a more complete picture of cumulative environmental pressure than any single contaminant study could offer.
Non–Negligible Ecological Risks of Urban Wetlands Caused by Cd and Hg on the Qinghai–Tibet Plateau, China
Researchers assessed heavy metal contamination in the Huangshui National Wetland Park on the Qinghai-Tibet Plateau, finding that cadmium and mercury pose non-negligible ecological risks across the urban wetland's three zones.
[Occurrence Relationship Between Microplastics and Heavy Metals Pollutants in the Estuarine Sediments of Poyang Lake and the Yangtze River].
This study analyzed microplastic and heavy metal concentrations in sediments at the junction of Poyang Lake and the Yangtze River in China, finding substantial microplastic abundance (averaging ~982 particles/kg) that correlated with levels of copper, cadmium, lead, zinc, and chromium. The co-occurrence of these pollutants raises concern that microplastics and heavy metals may compound each other's environmental risks in this region.
Microplastics in Sediment and Surface Water of West Dongting Lake and South Dongting Lake: Abundance, Source and Composition
Microplastics were found in both surface water and sediments of West Dongting Lake and South Dongting Lake in China, with fibers and fragments as the dominant types and concentrations influenced by proximity to urban and agricultural land use. The study provides the first data on microplastic contamination in China's second-largest freshwater lake system.
Interaction and bacterial effects of microplastics pollution on heavy metals in hyporheic sediments of different land-use types in the Beiluo River Basin
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.
Characterizing surface soil heavy metal contamination and source attribution in the Qinghai Lake Basin
Researchers analyzed 227 soil samples across China's Qinghai Lake Basin to map heavy metal contamination, finding generally low pollution levels with transportation as a key source; they recommend future research examine the combined threat of heavy metals and microplastics in alpine ecosystems.
[Characteristics, Risk Assessment of Microplastics, and Heavy Metal Pollution in Farmland Soils in the Upper Hanjiang River].
Researchers characterized microplastic and heavy metal pollution in farmland soils of the upper Hanjiang River, finding microplastic abundances of 360-6,300 particles/kg dominated by film-shaped PP and PE fragments under 0.5 mm, with Cu, Zn, Cd, and Pb exceeding background values and moderate overall compound pollution risk.
Integrative Evaluation of the Ecological Hazards by Microplastics and Heavy Metals in Wetland Ecosystem
Researchers conducted an integrative ecological hazard assessment of microplastics combined with heavy metals, evaluating their combined toxicity to aquatic organisms. The study found that co-contamination with heavy metals and microplastics poses greater ecological risk than either pollutant alone.
Multidecadal heavy metals and microplastic deposition records in an urban lake: the ecological risk assessments and influencing factors
Researchers collected sediment cores from Xinghu Lake, a Chinese urban lake, and used cesium-137 and lead-210 isotopic chronology to reconstruct multidecadal deposition records of heavy metals and microplastics. The study found average comprehensive ecological risk indexes of 46.59 for heavy metals and 105.78 for microplastics, with projections indicating risks reaching high and very high levels by 2030 and 2050 respectively.
Impacts of rainfall and lakeshore soil properties on microplastics in inland freshwater: A case study in Donghu Lake, China
Microplastic pollution in Donghu Lake, the largest urban freshwater lake in China, was investigated to examine how rainfall and lakeshore soil properties influence microplastic occurrence independent of direct human activities. Baseline microplastic abundance was 5.84 items per liter, with rainfall events significantly increasing concentrations by washing particles from surrounding soils.
Environmental behavior of microplastic - heavy metal synergistic contamination in a typical urban-rural river network
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.
Urban Microplastic Pollution Revealed by a Large-Scale Wetland Soil Survey
Researchers conducted a large-scale survey of wetland soils across an urban area and found an average of 379 microplastic particles per kilogram, with abundance closely linked to proximity to the city's economic center. Polypropylene was the most common polymer type, and fiber and fragment shapes dominated the samples. The study found that atmospheric particle pollution and heavy metal concentrations in soil were strongly correlated with microplastic levels, suggesting shared urban pollution sources.
Microplastics in surface waters of Dongting Lake and Hong Lake, China
Researchers sampled surface waters of Dongting Lake and Hong Lake in China and found microplastic contamination at both sites, with fibers as the dominant type and concentrations reflecting nearby human population density and land use.
Spatial Distributions and Intrinsic Influence Analysis of Cr, Ni, Cu, Zn, As, Cd and Pb in Sediments from the Wuliangsuhai Wetland, China
Researchers mapped heavy metal concentrations in sediments of the Wuliangsuhai wetland in China, finding arsenic and cadmium levels six- and seven-fold above background values respectively, largely from irrigation water inputs. High bioavailable fractions of cadmium, lead, and zinc raised concerns about ecological and human health risks in this agriculturally managed wetland.
Characterization of microplastics and the association of heavy metals with microplastics in suburban soil of central China
Microplastics in suburban soils of central China were characterized across three land-use types, with woodland containing the highest concentrations (4.1×10³ particles/kg) and 81.7% of particles under 100 μm, while XRF analysis confirmed heavy metals were enriched on plastic surfaces compared to surrounding soil. The study confirms that smaller microplastics are the dominant form and can act as carriers for heavy metal contamination in urban-adjacent soils.
Ecological risk assessment of microplastics and heavy metals in Northern Vietnam's estuarine sediments: A case study of Ba Lat and Bach Dang
Researchers assessed microplastic abundance and ecological risk alongside ten heavy metals in estuarine sediments from the Ba Lat and Bach Dang estuaries of northern Vietnam's Red-Thai Binh River system, finding co-contamination patterns that pose compounded ecological risks to these biodiverse coastal ecosystems.
Distribution and co-occurrence of microplastics and co-existing pollutants in bottom water and sediment of the East China Sea
This study characterized the co-occurrence of microplastics and co-existing pollutants (heavy metals and plastic additives) in bottom water and sediment of the East China Sea. Microplastics were widely distributed and carried adsorbed chemical contaminants at concentrations posing potential ecological risks, with plastic-associated pollutants correlated with specific polymer types and particle aging states.
Current status of microplastic pollution in China’s aquatic environment and its interactions with metal pollutants on aquatic organisms
Researchers reviewed the current state of microplastic pollution in China's rivers, lakes, and coastal waters and how microplastics interact with metal pollutants to affect aquatic organisms. They found that microplastics can absorb metals from the water and that the combined exposure is often more harmful to aquatic life than either pollutant alone. The study highlights that tire wear microplastics are a particularly concerning source because they release high levels of metals, creating compounding risks for freshwater and marine ecosystems.
[Effects of Land Use Patterns on Soil Microplastic Pollution in the Luoshijiang Sub-watershed of Erhai Lake Basin].
A study in the Luoshijiang sub-watershed of Erhai Lake found that land use type significantly influenced soil microplastic concentrations, with farmland and riparian zones showing higher contamination than grassland and woodland areas.