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61,005 resultsShowing papers similar to Do microplastics affect sulfamethoxazole sorption in soil? Experiments on polymers, ionic strength and fulvic acid
ClearImpact of Microplastics on Ciprofloxacin Adsorption Dynamics and Mechanisms in Soil
Researchers investigated how microplastics affect the adsorption dynamics and mechanisms of ciprofloxacin (an antibiotic) in soil, finding that microplastics competed with soil particles for antibiotic binding and altered the overall fate and mobility of ciprofloxacin in the soil environment.
A contrasting alteration of sulfamethoxazole bioaccessibility in two different soils amended with polyethylene microplastic: In-situ measurement using diffusive gradients in thin films
Researchers found that polyethylene microplastics altered the bioaccessibility of the antibiotic sulfamethoxazole differently in two soil types, increasing it in sandy soil but decreasing it in clay soil, demonstrating that soil composition critically mediates microplastic-antibiotic interactions.
Do Microplastics in Soil Influence the Bioavailability of Sulfamethoxazole to Plants?
Researchers investigated how three types of microplastics affect the availability and toxicity of the antibiotic sulfamethoxazole in soil using sorghum plants. They found that low concentrations of the antibiotic actually stimulated plant growth, while higher concentrations inhibited it, and the presence of microplastics generally reduced the antibiotic's toxicity. The study highlights that microplastics in agricultural soils can alter how pharmaceutical contaminants behave, with polystyrene having the strongest effect on drug availability.
The fate and risk of microplastic and antibiotic sulfamethoxazole coexisting in the environment
Researchers investigated sulfamethoxazole antibiotic adsorption onto polyamide microplastics and found that pH significantly influenced uptake, with adsorbed antibiotics more readily released in natural water than ultrapure water, posing environmental risks.
Influence of microplastics on the availability of antibiotics in soils
Researchers tested how three common types of microplastics affect the availability of antibiotics in different soil types. They found that microplastics significantly reduced the amount of antibiotics accessible in soil by providing extra binding sites and altering soil chemistry. The findings suggest that microplastic contamination in agricultural soils could change how antibiotics move through the environment.
Sorption of sulfamethoxazole onto six types of microplastics
This study investigated the sorption of the antibiotic sulfamethoxazole onto six types of microplastics, finding that sorption capacity depended on polymer type and that polyamide showed the highest uptake.
Enhance in mobility of oxytetracycline in a sandy loamy soil caused by the presence of microplastics
Researchers used batch and column experiments to study how the presence of polyamide (PA) microplastics affects the sorption and transport of the antibiotic oxytetracycline (OTC) in sandy loamy soil. They found that PA microplastics increased soil pH and reduced overall OTC sorption, leading to enhanced mobility of the antibiotic through the soil column, raising concerns about accelerated antibiotic transport to groundwater in microplastic-contaminated agricultural soils.
Comparison of adsorption and desorption of triclosan between microplastics and soil particles
Researchers compared adsorption and desorption of triclosan on polyethylene and polystyrene microplastics versus soil particles, finding that PE had the highest adsorption rate and equilibrium capacity while PS and soil showed similar profiles. The results suggest that microplastics in soil environments can compete with soil particles for triclosan binding, potentially altering the contaminant's mobility and bioavailability.
Aged polyamide microplastics enhance the adsorption of trimethoprim in soil environments
This study found that aged polyamide microplastics in soil significantly enhanced the adsorption of the antibiotic trimethoprim — more than 20 times greater than soil alone — through both surface sorption and pH alteration effects. This "enrichment effect" means that microplastics in agricultural soil can concentrate antibiotics, potentially increasing the risk of antibiotic resistance development and reducing the effectiveness of soil as a natural buffer against pharmaceutical contamination.
Adsorption of antibiotics on microplastics
This study examined the adsorption of antibiotics onto different microplastic types, finding that sorption capacity depended on both the antibiotic's chemical properties and the plastic's surface characteristics, with implications for antibiotic transport in aquatic environments.
Insights into behavior and mechanism of tetracycline adsorption on virgin and soil-exposed microplastics
Researchers studied how common microplastics absorb the antibiotic tetracycline, finding that soil-exposed plastics absorbed significantly more than fresh ones, with polylactic acid showing the greatest increase at 88%. The study revealed that environmental weathering changes how microplastics interact with antibiotics through different physical and chemical mechanisms. These findings are important for understanding how microplastics may carry and spread antibiotic contamination in soil environments.
Adsorption properties and influencing factors of antibiotics on microplastics under simulated gastric fluid environment
Researchers investigated how microplastics adsorb antibiotics under simulated human stomach conditions and found that aged microplastics had significantly greater adsorption capacity than pristine ones. Among the antibiotics tested, amoxicillin was most readily adsorbed by all three microplastic types studied, and adsorption capacity increased with smaller particle sizes and lower ionic strength.
Adsorption of antibiotics on different microplastics (MPs): Behavior and mechanism
Researchers investigated how four common microplastic types adsorb three antibiotics, finding that adsorption follows pseudo-second-order kinetics and Freundlich isotherms, with polymer type and antibiotic structure influencing sorption capacity and mechanism.
Microplastics inhibit oxytetracycline degradation in soils: Insights into biofilm-enhanced adsorption and microbial community shifts
Researchers examined how polyethylene and polylactic acid microplastics affect oxytetracycline degradation in organic fertilizer-amended paddy soil, finding that both plastic types significantly inhibited antibiotic degradation by lowering degradation rates 11.1-20.2%. Biofilm formation on microplastic surfaces enhanced oxytetracycline adsorption and shifted microbial community composition, reducing the abundance of antibiotic-degrading microorganisms.
Implications of polystyrene and polyamide microplastics in the adsorption of sulfonamide antibiotics and their metabolites in water matrices
Researchers found that polystyrene and polyamide microplastics can absorb sulfonamide antibiotics from water, with smaller particles and acidic conditions increasing absorption significantly. This means microplastics in the environment can act as carriers for antibiotics, potentially spreading antimicrobial resistance. The finding raises concerns because people may be exposed to both microplastics and the drugs they carry through contaminated water and food.
Sorption behavior of oxytetracycline on microplastics and the influence of environmental factors in groundwater: Experimental investigation and molecular dynamics simulation
This study examined how oxytetracycline antibiotic adsorbs onto different types of microplastics and how environmental factors such as pH, salinity, and UV exposure influence sorption behavior. The findings indicate microplastics can act as vectors transporting antibiotics through aquatic environments.
The effects of environmental conditions on the enrichment of antibiotics on microplastics in simulated natural water column
Researchers investigated how environmental ageing conditions affect the ability of microplastics to adsorb the antibiotic tetracycline, finding that pH, ionic strength, and temperature had little effect, but humic acid significantly reduced adsorption capacity. The reduction was attributed to humic acid covering plastic surfaces, altering hydrophobicity, and competing for adsorption sites via electrostatic repulsion.
Effects of co-loading of polyethylene microplastics and ciprofloxacin on the antibiotic degradation efficiency and microbial community structure in soil
Researchers studied how polyethylene microplastics and the antibiotic ciprofloxacin together affect soil microbial communities and antibiotic degradation. The study found that co-loading of microplastics with antibiotics altered microbial community structure and affected the rate of antibiotic degradation in soil, suggesting microplastic contamination may influence how soils process pharmaceutical pollutants.
Removal of sulfamethoxazole using Fe-Mn biochar filtration columns: Influence of co-existing polystyrene microplastics
Researchers investigated how polystyrene microplastics affect the removal of the antibiotic sulfamethoxazole using iron-manganese modified biochar filtration columns. They found that the presence of microplastics significantly reduced antibiotic retention due to competitive sorption, with the effect varying depending on water pH. The study highlights that co-occurring microplastics in wastewater can interfere with contaminant removal systems, potentially allowing more antibiotics to pass through treatment processes.
Behavior and mechanisms of ciprofloxacin adsorption on aged polylactic acid and polyethlene microplastics
Researchers investigated how aging affects the adsorption of the antibiotic ciprofloxacin on polylactic acid and polyethylene microplastics, finding that aged plastics showed significantly enhanced adsorption capacity due to physicochemical surface changes.
Impact on sulfadiazine bio-accessibility in soils through organic diffusive gradients in thin films (o-DGT): Differentiation based on microplastic polymers, aging, and soil properties
Microplastics of different polymer types and aging states were shown to alter the bio-accessibility of the antibiotic sulfadiazine in agricultural soils, measured using organic diffusive gradient thin-film devices that mimic biological uptake.
Sorption of tetracycline antibiotics by microplastics, associated mechanisms, and risk assessments
Researchers systematically investigated how three common microplastic types adsorb tetracycline antibiotics. The study found that polystyrene had the highest adsorption capacity at 178.57 micrograms per gram, followed by PVC and polyethylene, and that PVC and polystyrene strongly retained the antibiotics with minimal desorption, raising concerns about compound pollution from microplastic-antibiotic combinations in the environment.
[Research Progress on Adsorption, Migration, and Compound Toxicity of Microplastics and Antibiotics in Soil].
This review examined how microplastics adsorb antibiotics in soil, drive their co-migration, and produce combined toxic effects on soil fauna, plants, and microorganisms. Hydrophobic partitioning, electrostatic interactions, and hydrogen bonding are the primary adsorption mechanisms, and co-exposure often amplifies toxicity to soil ecosystems.
Adsorption characteristics of antibiotics on microplastics: The effect of surface contamination with an anionic surfactant
Researchers found that the common anionic surfactant SDBS coating polystyrene and polyethylene microplastics significantly altered their adsorption of the antibiotics oxytetracycline and norfloxacin. SDBS changed the surface charge and hydrophobicity of MPs in ways that increased antibiotic binding, suggesting surfactant-contaminated MPs pose a greater risk as antibiotic vectors in aquatic environments.