We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Adsorption of Cadmium, Copper and Lead on Polypropylene and Polyethylene Microplastics
Summary
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.
Microplastic is drawing attention of researchers and public as it is ubiquitous, and becoming a severe threat to the marine ecosystem and human being. Heavy metals and microplastics pollution seems to be having interaction even though both are considered different classes of pollutants. This experimental study for a period of seven days was done with polypropylene (PP) and polyethylene (PE) to study the relation between microplastics and heavy metals (Cd, Cu and Pb). Microwave Plasma Atomic Emission Spectroscopy (MP-AES) was use to analyze the heavy metals concentration in the water. The main aim of this experiment is to study the relation between microplastics and heavy metals. The effects of types of microplastics and adsorption kinetic will also be studied. The study has shown that both type of microplastics adsorbed the three heavy metals. The adsorption of heavy metals happened up until second day of experiment and followed by the release of heavy metals after that. ANOVA analysis was done and it showed that the heavy metals adsorbed are not affected by the types of microplastics used. The adsorption kinetic was calculated using partition coefficient. This showed that Pb was adsorbed the most in both microplastics with a higher value of partition coefficient. The surface analysis of microplastics also showed that there is no difference after seven days of experiment. As a result, this study shows that there is an interaction between microplastics and heavy metals. The interaction could probably harm the aquatic organisms and will be transferred through food chain and harm human being as well. Finally, it is learned that microplastics is the vector of heavy metals through this study.
Sign in to start a discussion.
More Papers Like This
Adsorption 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.