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61,005 resultsShowing papers similar to Adsorption of Cadmium, Copper and Lead on Polypropylene and Polyethylene Microplastics
ClearAdsorption characteristics of cadmium onto microplastics from aqueous solutions
Laboratory adsorption experiments characterized how cadmium is taken up by microplastics of different polymer types from aqueous solutions, finding adsorption capacity varied significantly with polymer chemistry, particle size, and solution conditions. The results help predict how microplastics in contaminated waterways accumulate and transport cadmium, a highly toxic heavy metal.
Laboratoty Experiment on Copper and Lead Adsorption Ability of Microplastics
Researchers conducted a 7-day laboratory experiment examining the adsorption of copper and lead onto microplastic fragments derived from plastic straws and grocery bags in spiked seawater, finding both plastics adsorbed both metals with increasing concentrations over time. Plastic bag fragments adsorbed more of both metals than straw fragments, likely due to higher surface area, confirming the vector role of microplastics for heavy metal transport in marine systems.
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.
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.
Sorption 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.
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.
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.
Adsorption properties and influencing factors of Cu(II) on polystyrene and polyethylene terephthalate microplastics in seawater
Researchers investigated how polystyrene and polyethylene terephthalate microplastics adsorb copper ions in seawater, characterizing adsorption kinetics and influencing factors to understand microplastics' role as vectors for heavy metal pollutants in marine environments.
Kinetics and Size Effects on Adsorption of Cu(II), Cr(III), and Pb(II) Onto Polyethylene, Polypropylene, and Polyethylene Terephthalate Microplastic Particles
Researchers investigated how copper, chromium, and lead ions adsorb onto polyethylene, polypropylene, and PET microplastic particles of different sizes. The study found that smaller microplastic particles had greater adsorption capacity for heavy metals, with lead showing the highest adsorption levels, particularly on PET particles, suggesting increased environmental risk when tiny microplastics and heavy metals coexist.
Preferential adsorption of Cd, Cs and Zn onto virgin polyethylene microplastic versus sediment particles
Polyethylene microplastics preferentially adsorb the heavy metals cadmium, cesium, and zinc compared to natural sediment particles. This means microplastics may act as concentrated vectors for toxic metals in marine environments, increasing exposure risks for organisms that ingest them.
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.
Adsorption behavior of heavy metals onto microplastics derived from conventional and biodegradable commercial plastic products
Researchers tested how well different types of microplastics, including both conventional and biodegradable plastics, absorb heavy metals like lead, nickel, copper, zinc, and cadmium from water. They found that all microplastic types could pick up significant amounts of heavy metals, with biodegradable plastics sometimes absorbing even more than conventional ones. This is concerning because microplastics carrying heavy metals could deliver a double dose of contamination to organisms that ingest them.
Coexistence and Adsorption Properties of Heavy Metals by Polypropylene Microplastics
Researchers analysed the adsorption of lead, copper, cadmium, and zinc onto polypropylene microplastics using scanning electron microscopy, FTIR, and X-ray photoelectron spectroscopy, elucidating the coexistence and adsorption mechanisms by which microplastics act as carriers of heavy metal pollutants.
Study on the capability and characteristics of heavy metals enriched on microplastics in marine environment
Laboratory and field experiments examined heavy metal adsorption on five plastic types (PVC, PP, PE, PA, POM), finding that PVC and PP had the highest adsorption capacity for lead and manganese, with field results showing that PP adsorbed metals at concentrations orders of magnitude higher than co-adsorbed PAHs. The study provides direct comparative data on microplastic-metal interactions across polymer types in marine environments.
Characterization of polyethylene and polyurethane microplastics and their adsorption behavior on Cu2+ and Fe3+ in environmental matrices
Researchers characterized polyethylene and polyurethane microplastics and measured their ability to adsorb heavy metals, finding that both types can bind copper and iron ions from water — raising concern that microplastics may act as carriers that transport toxic metals deeper into aquatic ecosystems and food chains.
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.
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.
Investigation of Heavy Metal Adsorption on Microplastics
Researchers investigated the adsorption of lead (Pb) and aluminium (Al) onto polyethylene terephthalate, polyamide, and ethylene vinyl acetate microplastics, finding that pH, contact time, initial metal concentration, and temperature all significantly affect adsorption capacity. Experimental data were best described by Langmuir and Freundlich isotherm models, confirming that microplastics act as vectors for heavy metal contaminants in aquatic environments.
Adsorption Characteristics of Heavy Metals onto Functionalized Microplastics
This study tested how three types of functionalized microplastics—polyacrylate, biobased polyurethane, and petroleum-based polyurethane—absorb toxic heavy metals including lead, copper, and cadmium. Smaller particles and UV-weathered plastic showed higher adsorption, meaning aged microplastics in the environment can act as concentrated carriers of heavy metal contamination, amplifying ecological risk.
Metals' Adsorption Onto Environmental Microplastics at Shoreline Sediments
Metal adsorption onto microplastics collected from shoreline environments was measured, revealing that weathered plastic particles accumulate heavy metals like lead, copper, and zinc. The results confirm that shoreline microplastics act as metal-enriched vectors that could pose risks to organisms ingesting them.
Evaluation of microplastic contamination by metals in a controlled environment: A risk to be considered
Researchers found that polyethylene terephthalate microplastics readily adsorb nickel, copper, and zinc metals in aquatic environments, demonstrating that degraded plastics can act as carriers for metal contaminants and pose compounded environmental risks.
Exploring adsorption dynamics of heavy metals onto varied commercial microplastic substrates: Isothermal models and kinetics analysis
This study investigated how polystyrene and polypropylene microplastics absorb the heavy metals cadmium, nickel, and lead from water. Both plastic types absorbed significant amounts of these metals, with the process following predictable chemical patterns. The findings are relevant to human health because microplastics contaminated with heavy metals in the environment could deliver concentrated doses of toxic metals to organisms that ingest them, including through the food chain.
Adsorption of heavy metals by biofilm-coated microplastics in aquatic environments: Mechanisms, isotherm and kinetic processes, and influencing factors
This review synthesizes research on how biofilms—microbial coatings that naturally form on microplastics in water—alter the particles' ability to absorb heavy metals like lead, copper, and cadmium, finding that biofilmed microplastics generally adsorb more metal than bare plastic and that electrostatic forces and surface complexation are the dominant mechanisms. This matters because microplastics coated in both biofilm and toxic metals may deliver a double dose of contamination to organisms that ingest them. The review identifies key gaps, including how competitive metal mixtures and shifting biofilm composition over time affect this combined pollution risk.
Sorptive behaviour of chromium on polyethylene microbeads in artificial seawater
This laboratory study examined how chromium — a toxic heavy metal — adsorbs onto polyethylene microbeads in artificial seawater, finding that microplastics can accumulate chromium at concentrations far above those in surrounding water. The results support the concern that microplastics act as vectors concentrating heavy metal pollutants in marine environments.