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61,005 resultsShowing papers similar to Influence of polyethylene-microplastic on environmental behaviors of metals in soil
ClearEffect 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.
Exploring the interaction between microplastics and heavy metals: unveiling the impact of microplastics on lead sorption and desorption in soil
Researchers conducted batch experiments to examine how high-density polyethylene microplastics affect the adsorption and desorption of lead in agricultural soil under different conditions, finding that equilibrium was reached within 120 minutes and that microplastics altered lead sorption kinetics. The presence of HDPE microplastics changed soil's capacity to retain or release lead, which has implications for heavy metal mobility and crop uptake in contaminated farmland.
Impacts of polyethylene microplastics on bioavailability and toxicity of metals in soil
Researchers studied how polyethylene microplastics affect the bioavailability and toxicity of copper and nickel in soil using earthworms as test organisms. They found that adding microplastics to contaminated soil increased the bioavailability of the metals and enhanced their toxic effects on the earthworms. The study suggests that microplastics in soil can worsen heavy metal pollution by making metals more accessible and harmful to soil-dwelling organisms.
[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.
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.
Use of EDTA and CaCl2 Extraction Methods to Predict the Bioavailability of Heavy Metals in Soils Polluted with Microplastics
This study tested how seven common types of microplastics affect the availability of heavy metals like lead, cadmium, and copper in soil. Some microplastics, like high-density polyethylene, reduced lead movement but increased cadmium and cobalt availability by 10-20%. The findings show that microplastics in agricultural soil can change how toxic metals behave, potentially affecting which contaminants get absorbed by food crops.
Impacts of polypropylene microplastics on the distribution of cadmium, enzyme activities, and bacterial community in black soil at the aggregate level
Researchers found that adding polypropylene microplastics to soil contaminated with cadmium (a toxic heavy metal) changed how the metal distributed across different soil particle sizes and shifted bacterial communities. The microplastics increased cadmium availability in some soil fractions, potentially making it easier for plants to absorb this toxic metal. This suggests that microplastic-contaminated farmland may pose greater heavy metal exposure risks for crops and, ultimately, for people who eat them.
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.
Interaction of Heavy Metals with Plastic Contaminated Soil
This study reviews and investigates how microplastic contamination in soil interacts with heavy metals, finding that plastic particles alter soil behavior and can change how toxic metals move through and bind to soil. Because microplastics increase soil permeability and adsorb metals, their presence in landfills and near industrial sites raises concern about groundwater contamination from combined plastic and metal pollution.
Microplastics change soil properties, heavy metal availability and bacterial community in a Pb-Zn-contaminated soil
This study found that adding six different types of microplastics to soil contaminated with lead and zinc changed the soil's chemistry, increased the availability of those toxic metals, and shifted the bacterial communities living in the soil. Higher doses of microplastics caused greater disruption, reducing microbial diversity and altering nutrient cycling. The findings suggest that microplastics in contaminated soil could make heavy metals more likely to enter plants and the food chain.
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.
Polyethylene and polypropylene microplastics reduce chemisorption of cadmium in paddy soil and increase its bioaccessibility and bioavailability
Researchers found that polyethylene and polypropylene microplastics reduce cadmium chemisorption in paddy soil while increasing its bioaccessibility and bioavailability, suggesting that microplastic contamination in rice paddies could enhance heavy metal uptake by crops and human dietary exposure.
Effects of microplastics and cadmium co-contamination on soil properties, maize (Zea mays L.) growth characteristics, and cadmium accumulation in maize in loessial soil-maize systems
Researchers studied the combined effects of polyethylene microplastics and cadmium on soil properties and maize growth through pot experiments. They found that microplastics altered soil nutrient availability and, depending on size and concentration, either increased or decreased cadmium uptake by the plants. The study suggests that microplastic contamination in agricultural soils can change how crops absorb toxic heavy metals, with potential implications for food safety.
Influence of Different Microplastic Forms on pH and Mobility of Cu2+ and Pb2+ in Soil
Researchers investigated how different microplastic forms influence soil pH and the mobility of copper and lead ions, finding that microplastics' surface properties and electrostatic interactions can modify heavy metal sorption and alter the soil microenvironment.
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.
Traditional microplastics alter microbial community, metabolites and nutrition in heavy metal-contaminated coastal saline soil
Researchers added three types of microplastics to coastal soil already contaminated with heavy metals (cadmium, copper, and zinc), finding that the plastics altered soil chemistry, shifted microbial communities, disrupted metabolic pathways, and changed how available the toxic metals were to organisms. These findings suggest microplastics can worsen existing heavy metal pollution by changing how metals move through soil ecosystems.
Polyethylene microplastics increase cadmium uptake in lettuce (Lactuca sativa L.) by altering the soil microenvironment
This study found that polyethylene microplastics in soil increased the amount of cadmium, a toxic heavy metal, that lettuce plants absorbed. The microplastics changed soil chemistry by lowering pH and increasing dissolved organic carbon, which made cadmium more available for plant uptake. This is concerning because it suggests that microplastics in agricultural soil could make crops more contaminated with heavy metals, increasing the health risks for people who eat them.
Ecotoxicological effects of polyethylene microplastics and lead (Pb) on the biomass, activity, and community diversity of soil microbes
A soil experiment found that polyethylene microplastics made lead (a toxic heavy metal) more available in soil and worsened its harmful effects on soil microorganisms. The combination reduced beneficial enzyme activity, lowered microbial efficiency, and shifted the soil microbial community, suggesting that microplastic pollution in contaminated soils could amplify heavy metal toxicity in ways that ultimately affect food crops and human health.
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.
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.
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.
Influence of aged and pristine polyethylene microplastics on bioavailability of three heavy metals in soil: Toxic effects to earthworms (Eisenia fetida)
Researchers studied how aging affects the ability of polyethylene microplastics to influence the bioavailability of zinc, lead, and cadmium in soil, and the resulting toxicity to earthworms. The study found that aged microplastics had different adsorption properties for heavy metals compared to pristine particles, which altered the bioavailability of these metals and affected earthworm health differently depending on microplastic concentration and aging status.
Metal type and aggregate microenvironment govern the response sequence of speciation transformation of different heavy metals to microplastics in soil
A five-month soil incubation experiment showed that polyethylene microplastics shifted heavy metals like zinc and cadmium from bioavailable forms toward organic-bound forms in soil aggregates, reducing their immediate availability to plants and organisms. The effect varied by metal type and aggregate size, suggesting microplastics can alter the environmental behavior of multiple co-contaminants simultaneously.
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.