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20 resultsShowing papers similar to Changes in the spectroscopic response of soil organic matters by PBAT microplastics regulated the Cd adsorption behaviors in different soils
ClearAdsorption Behaviors of Cadmium Regulated by Microplastics Properties in a Forest Soil
Microplastics and cadmium (a toxic heavy metal) frequently pollute forest soils together, and this study examined how different types, sizes, and concentrations of microplastics affect cadmium's behavior in soil. Biodegradable plastics like PBS and PBA adsorbed and released more cadmium than conventional polyethylene, and microplastics altered the soil's organic matter in ways that influenced how cadmium moved and became available to organisms. These findings matter because co-contamination by microplastics and heavy metals in soils may compound environmental and food-chain risks beyond what either pollutant causes alone.
Microplastics in soils with contrasting texture, organic carbon and mineralogy: changes in cadmium adsorption forms and their mobility in soil columns
This study investigated how high-density polyethylene microplastics alter the behavior of cadmium — a toxic heavy metal — in soils with different textures, organic carbon contents, and mineral compositions. Using soil column experiments, researchers found that microplastics changed how cadmium binds to soil particles and how easily it leaches downward, with effects varying depending on the soil type and microplastic particle size. Since cadmium is a known carcinogen and agricultural soils commonly contain both microplastics and heavy metals, understanding their interactions is critical for food safety.
Microplastics influence the adsorption and desorption characteristics of Cd in an agricultural soil
Batch experiments showed that polyethylene microplastics reduced cadmium adsorption but increased desorption in farmland soil, with effects varying by MP dose, particle size, and pH. The findings indicate microplastics could increase cadmium mobility in agricultural soils, potentially raising risks of crop uptake.
Effect of Microplastics on the Adsorption and Desorption Properties of Cadmium in Soil
Polyethylene and polypropylene microplastics were found to reduce soil's capacity to adsorb cadmium, a toxic heavy metal, raising concerns that microplastic contamination in farmland soils could increase the mobility and risk of heavy metal pollutants.
Microplastics alter cadmium accumulation in different soil-plant systems: Revealing the crucial roles of soil bacteria and metabolism
A study found that microplastics in soil can change how much cadmium, a toxic heavy metal, is absorbed by food crops, with the effects varying depending on soil type and the amount of plastic present. By altering soil chemistry and bacterial communities, microplastics reshape how pollutants move through farmland and into the food we eat.
Polyethylene and poly (butyleneadipate-co-terephthalate)-based biodegradable microplastics modulate the bioavailability and speciation of Cd and As in soil: Insights into transformation mechanisms
Biodegradable PBAT and conventional polyethylene microplastics added to soil were both found to alter soil physicochemical properties and change the speciation and bioavailability of heavy metals including lead and cadmium. The study highlights that both conventional and so-called biodegradable microplastics can exacerbate heavy metal risks in contaminated agricultural soils.
Polypropylene microplastics affect the distribution and bioavailability of cadmium by changing soil components during soil aging
A 180-day soil aging experiment with polypropylene microplastics at 2-10% concentration showed that microplastics altered the distribution of cadmium between soil particle-associated organic matter, organo-mineral complexes, and mineral fractions. Higher microplastic concentrations shifted cadmium toward more stable organo-mineral associations, reducing its bioavailability over time.
Microplastics can affect soil properties and chemical speciation of metals in yellow-brown soil
Researchers added five polymer types (LLDPE, PA, PU, PS, LDPE) at various concentrations to yellow-brown soil and measured their effects on soil physicochemical properties and the speciation of cadmium, copper, lead, and zinc. MPs shifted heavy metal distribution toward more bioavailable fractions, suggesting that microplastic contamination can increase the extractability and potential toxicity of co-occurring metals in soil.
How do controlled-release fertilizer coated microplastics dynamically affect Cd availability by regulating Fe species and DOC content in soil?
Researchers tracked how polyurethane microplastics from controlled-release fertilizer coatings dynamically changed cadmium availability in soil over time by altering iron species and dissolved organic carbon content. Smaller MP particles at higher concentrations most strongly increased bioavailable cadmium, suggesting fertilizer-derived MPs could amplify heavy metal exposure risks in agricultural soils.
Response of occurrence in microplastics and its adsorped cadmium capacity to simulated agricultural environmental scenarios in sludge-amended soil
Researchers found that UV irradiation of microplastics in sludge-amended soil most significantly increased their capacity to adsorb cadmium, due to surface changes including increased surface area, new crystal formation, and altered functional groups, raising concerns about heavy metal mobilization in agricultural soils.
Polyvinyl chloride microplastics reduce Cd(II) adsorption and enhance desorption with soil-dependent mechanisms
The study investigated how polyvinyl chloride (PVC) microplastics affect cadmium adsorption and desorption in two different soil types. Researchers found that PVC reduced cadmium adsorption and promoted its release back into the soil, potentially increasing its bioavailability and environmental risk.
Insight into the interactions between microplastics and heavy metals in agricultural soil solution: adsorption performance influenced by microplastic types
Environmental-simulating microplastics (aged under environmental conditions) showed higher cadmium and chromium adsorption capacity than commercial microplastics in agricultural soil solutions, with surface oxidation increasing adsorption—suggesting that aged microplastics are more effective co-transporters of heavy metals in contaminated agricultural soils.
Influences of microplastics types and size on soil properties and cadmium adsorption in paddy soil after one rice season
Researchers grew rice in paddy soil amended with polyethylene, polyacrylonitrile, and PET microplastics of varying sizes and found that microplastic type and particle size significantly altered soil properties and cadmium adsorption capacity, with smaller particles generally having greater effects.
[Characteristics and Mechanism of Cd Release and Transport in Soil Contaminated with PE-Cd].
Researchers investigated how polyethylene (PE) microplastics affect the sorption and transport of cadmium (Cd) in soil, examining the characteristics and mechanisms of Cd release under PE contamination. Their findings reveal that microplastics alter soil physicochemical properties and sorption capacity, influencing heavy metal mobility and distribution in terrestrial ecosystems.
Typical microplastics in field and facility agriculture dynamically affect available cadmium in different soil types through physicochemical dynamics of carbon, iron and microbes
Researchers found that polyurethane and polypropylene microplastics dynamically affect cadmium availability in different soil types through changes in soil carbon chemistry, iron mineral forms, and microbial community composition, with effects varying between field and greenhouse agricultural conditions.
New insights into the decrease in Cd2+ bioavailability in sediments by microplastics: Role of geochemical properties
Researchers investigated how polyethylene terephthalate microplastics alter the geochemical properties of sediments in ways that reduce the bioavailability of cadmium. PET microplastics shifted cadmium from the readily exchangeable fraction to the organically bound fraction, and the associated changes in microbial activity and organic carbon explained much of the reduction in cadmium bioavailability.
Effects of microplastics in soil on the regulation of cadmium bioavailability by biochar
Researchers investigated how biochar amendments affect cadmium bioavailability in soils co-contaminated with microplastics, finding that the presence of microplastics altered cadmium mobility and complicated biochar's remediation effectiveness in ways that depend on the specific MP type present.
Influence of polyethylene-microplastic on environmental behaviors of metals in soil
Researchers investigated how polyethylene microplastics affect the adsorption, desorption, and bioavailability of heavy metals in soil. They found that adding microplastics altered how metals bind to soil particles and increased the mobility of certain metals like cadmium and lead. The study suggests that microplastic contamination in soils may change the environmental behavior of heavy metals, potentially increasing their availability to plants and soil organisms.
UV aging and soil organic matter co-regulate the adsorption of organophosphate flame retardants on PVC and PS: Kinetics and mechanisms
This study examined how UV aging and soil dissolved organic matter affect the adsorption of six organophosphate flame retardants onto PVC and polystyrene microplastics, finding that hydrophobic interactions dominate uptake and that UV aging increases adsorption capacity while organic matter can either suppress or enhance it depending on concentration.
Response of soil heavy metal forms and bioavailability to the application of microplastics across five years in different soil types
Researchers conducted a five-year experiment examining how microplastics affect the chemical forms and bioavailability of heavy metals across five different soil types. They found that microplastics generally reduced the readily available forms of heavy metals while increasing the mineral- and organic-bound forms, and that the bioconcentration of chromium and lead decreased substantially. The study suggests that soil type and exposure duration both play important roles in how microplastics influence heavy metal behavior in soils.