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20 resultsShowing papers similar to Adsorption characteristics of cadmium onto microplastics from aqueous solutions
ClearSorption properties of cadmium on microplastics: The common practice experiment and A two-dimensional correlation spectroscopic study
Laboratory experiments examined how cadmium adsorbs onto microplastics of different polymer types and aging states, finding that surface chemistry and weathering significantly affect how much heavy metal the plastics can carry. This matters because microplastics contaminated with heavy metals represent a dual pollution risk when ingested by aquatic organisms.
Study on the Adsorption Behavior of Cadmiumby the MPs and Its Environmental Factors
This study investigated how microplastics adsorb the toxic heavy metal cadmium under different environmental conditions including pH, temperature, and salinity. Microplastics were found to act as carriers for cadmium, potentially transporting this harmful metal into aquatic ecosystems and the food chain.
Adsorption of Cadmium, Copper and Lead on Polypropylene and Polyethylene Microplastics
This laboratory study measured how cadmium, copper, and lead adsorb onto polypropylene and polyethylene microplastic particles in seawater, finding that microplastics concentrate these toxic metals at levels well above surrounding water concentrations. The results reinforce concerns that microplastics act as carriers of heavy metal contamination in marine ecosystems.
Microplastics as a vehicle of heavy metals in aquatic environments: A review of adsorption factors, mechanisms, and biological effects
This review summarizes how microplastics in water can absorb and carry toxic heavy metals like lead and cadmium, making them more dangerous to aquatic life than either pollutant alone. Environmental factors such as water acidity, salinity, and organic matter influence how much metal sticks to microplastic surfaces. Since contaminated seafood is a major source of human exposure, understanding these interactions is important for assessing health risks.
Study on the Adsorption Behavior and Mechanism of Heavy Metals in Aquatic Environment before and after the Aging of Typical Microplastics
Researchers investigated the adsorption behavior and mechanisms of heavy metals by typical microplastics before and after environmental aging, finding that aging significantly alters microplastics' surface properties and capacity to bind metals such as cadmium and lead in aquatic systems.
Metal adsorption by microplastics in aquatic environments under controlled conditions: exposure time, pH and salinity
Scientists systematically varied pH, salinity, and exposure time during metal adsorption experiments on different microplastic types, finding that pH had the greatest influence on metal uptake, with higher pH favoring adsorption of copper, lead, and cadmium onto most tested polymers.
[Effects of Aging on the Cd Adsorption by Microplastics and the Relevant Mechanisms].
This study examined how aging affects the ability of microplastics — including polyethylene and polystyrene — to adsorb the heavy metal cadmium. Weathered microplastics showed different adsorption behavior than virgin particles, which has implications for how microplastics transport toxic metals through aquatic environments.
Adsorption mechanism of cadmium on microplastics and their desorption behavior in sediment and gut environments: The roles of water pH, lead ions, natural organic matter and phenanthrene
Researchers compared how cadmium adsorbs onto five different microplastic types and then desorbs in simulated sediment and gut environments, finding that pH, competing ions, natural organic matter, and co-pollutants like phenanthrene all significantly alter how much cadmium is released.
Adsorption of three bivalent metals by four chemical distinct microplastics
Researchers measured the sorption of copper, cadmium, and lead onto four types of microplastic particles — including chlorinated PE, PVC, and two PE variants — finding that higher crystallinity and surface area drove greater metal adsorption, and that all four plastics had different capacities for each metal.
Reframing microplastics as a ligand for metals reveals that water quality characteristics govern the association of cadmium to polyethylene
Researchers reframed microplastics as a chemical ligand for metals and studied how water quality characteristics govern cadmium binding to polyethylene particles. They found that factors like pH, dissolved organic carbon, and water hardness significantly influenced how much cadmium adhered to the plastic surface. The study suggests that the environmental risk of microplastics as metal carriers depends heavily on local water chemistry conditions.
Microplastics as adsorbent for Pb2+ and Cd2+: A comparative study of polypropylene, polyvinyl chloride, high-density polyethylene, and low-density polyethylene
Researchers compared how four common types of microplastics adsorb lead and cadmium heavy metals in aquatic environments. The study found that polypropylene had the highest adsorption capacity for both metals, with oxygen-containing functional groups playing a key role in the adsorption process, suggesting that different microplastic types pose varying levels of environmental risk as heavy metal carriers.
Effects of virgin microplastics on the transport of Cd (II) in Xiangjiang River sediment
Six types of microplastics were found to change how cadmium (a toxic heavy metal) binds to and moves through river sediments. The presence of microplastics altered cadmium adsorption behavior, suggesting that plastics in river sediments can affect the mobility and bioavailability of co-occurring heavy metal pollutants.
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.
The potential of microplastics as carriers of metals
Five types of microplastics were tested for their ability to adsorb heavy metals (Cd, Co, Cr, Cu, Ni, Pb, Zn) in different water matrices, finding significant adsorption of lead, chromium, and zinc—especially on polyethylene and PVC—with surface area and porosity as key drivers. The study identifies microplastics as potential vectors for heavy metal transport and transfer through aquatic food chains.
Facilitated transport of Cd(II) by plasma-modified microplastics: Influence of surface functional groups and interaction mechanisms
Discharge plasma treatment of water was found to modify microplastic surface chemistry by adding functional groups that significantly enhanced their adsorption capacity for cadmium, suggesting that plasma-treated microplastics remaining in water could become more effective metal carriers.
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.
Transformation characteristics of microplastics derived from sludge and their Cd(II) adsorption behavior during bioleaching
Researchers found that bioleaching treatment significantly reduced microplastic abundance in wastewater treatment plant sludge while altering the physicochemical properties of remaining microplastics in ways that changed their cadmium adsorption capacity, with implications for heavy metal mobility during sludge management.
Comparative analysis of kinetics and mechanisms for Pb(II) sorption onto three kinds of microplastics
The sorption kinetics and mechanisms of lead (Pb(II)) onto three types of microplastics were compared to understand how plastic debris concentrates heavy metals in aquatic environments. The study found polymer-specific differences in sorption capacity and mechanism, with implications for how microplastics alter the distribution and bioavailability of lead in contaminated water.
Adsorption mechanism of cadmium on polystyrene microplastics containing hexabromocyclododecane
Researchers found that polystyrene microplastics containing hexabromocyclododecane (PS-HBCD) adsorb cadmium via electrostatic attraction and surface complexation, with pH, salinity, and particle size all influencing adsorption capacity.
Competitive adsorption of lead and cadmium onto nanoplastics with different charges: Two-dimensional correlation spectroscopy study
Researchers investigated how nanoplastics with different surface charges compete to adsorb the heavy metals lead and cadmium, finding that negatively charged nanoplastics bound more of both metals and that lead consistently outcompeted cadmium for binding sites. These results reveal that the surface chemistry of nanoplastics shapes their capacity to carry toxic metals through the environment, with implications for combined heavy-metal and nanoplastic risk in aquatic ecosystems.