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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Marine & Wildlife Sign in to save

Competitive sorption of persistent organic pollutants onto microplastics in the marine environment

Marine Pollution Bulletin 2012 538 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Adil Bakir, Adil Bakir, Adil Bakir, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Adil Bakir, Adil Bakir, Adil Bakir, Adil Bakir, Adil Bakir, Richard C. Thompson Adil Bakir, Richard C. Thompson Adil Bakir, Adil Bakir, Adil Bakir, Adil Bakir, Adil Bakir, Adil Bakir, Adil Bakir, Richard C. Thompson Adil Bakir, Adil Bakir, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Steven J. Rowland, Steven J. Rowland, Steven J. Rowland, Steven J. Rowland, Steven J. Rowland, Richard C. Thompson Steven J. Rowland, Richard C. Thompson Steven J. Rowland, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Adil Bakir, Richard C. Thompson Richard C. Thompson Adil Bakir, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Adil Bakir, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Adil Bakir, Richard C. Thompson Richard C. Thompson Adil Bakir, Richard C. Thompson Richard C. Thompson Adil Bakir, Adil Bakir, Richard C. Thompson Richard C. Thompson Richard C. Thompson Adil Bakir, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Adil Bakir, Richard C. Thompson Adil Bakir, Adil Bakir, Richard C. Thompson Adil Bakir, Adil Bakir, Adil Bakir, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Adil Bakir, Richard C. Thompson Richard C. Thompson Adil Bakir, Richard C. Thompson Richard C. Thompson Adil Bakir, Adil Bakir, Richard C. Thompson Adil Bakir, Richard C. Thompson Adil Bakir, Richard C. Thompson Richard C. Thompson Richard C. Thompson Adil Bakir, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson

Summary

This study tested whether phenanthrene and DDT compete with each other for sorption sites on PVC microplastics when present as a mixture in seawater, and found that competition reduced sorption of each compound compared to when tested alone. The finding has implications for predicting how microplastics transport chemical mixtures in the ocean, which is more realistic than single-compound tests.

Polymers
PE PVC
Study Type Environmental

Plastics are known to sorb persistent organic pollutants from seawater. However, studies to quantify sorption rates have only considered the affinity of chemicals in isolation, unlike the conditions in the environment where contaminants are present as complex mixtures. Here we examine whether phenanthrene and 4,4'-DDT, in a mixture, compete for sorption sites onto PVC with no added additives (unplasticised PVC or uPVC) and Ultra-High Molecular Weight polyethylene. Interactions were investigated by exposing particles of uPVC and UHMW PE to mixtures of 3H and 14C radiolabelled Phe and DDT. Changes in sorption capacity were modelled by applying a Freundlich binding sorption isotherms. An Extended Langmuir Model and an Interaction Factor Model were also applied to predict equilibrium concentrations of pollutants onto plastic. This study showed that in a bi-solute system, DDT exhibited no significantly different sorption behaviour than in single solute systems. However, DDT did appear to interfere with the sorption of Phe onto plastic, indicating an antagonistic effect.

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