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Adsorption of fluoranthene and phenanthrene by virgin and weathered polyethylene microplastics in freshwaters

Chemosphere 2022 37 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Husein Almuhtaram, Florence A.O. Udenby, Florence A.O. Udenby, Husein Almuhtaram, Husein Almuhtaram, Husein Almuhtaram, Husein Almuhtaram, Husein Almuhtaram, Husein Almuhtaram, Husein Almuhtaram, Robert C. Andrews Husein Almuhtaram, Husein Almuhtaram, Husein Almuhtaram, Michael J. McKie, Husein Almuhtaram, Husein Almuhtaram, Husein Almuhtaram, Robert C. Andrews Robert C. Andrews Robert C. Andrews Robert C. Andrews Robert C. Andrews Robert C. Andrews Robert C. Andrews Michael J. McKie, Michael J. McKie, Michael J. McKie, Michael J. McKie, Michael J. McKie, Robert C. Andrews Robert C. Andrews Robert C. Andrews Husein Almuhtaram, Robert C. Andrews Husein Almuhtaram, Robert C. Andrews Robert C. Andrews Robert C. Andrews Husein Almuhtaram, Husein Almuhtaram, Robert C. Andrews Husein Almuhtaram, Robert C. Andrews Robert C. Andrews Robert C. Andrews Robert C. Andrews

Summary

Researchers examined how virgin and weathered polyethylene microplastics adsorb fluoranthene and phenanthrene in freshwater, finding that weathering significantly increased adsorption capacity and that water chemistry influenced contaminant uptake.

Polymers

Study Type Environmental

Concern exists regarding potential health impacts associated with contaminants of emerging concern (CECs) that adsorb to microplastics (MPs). Previous studies have examined MPs as potential contaminant vectors in marine environments as opposed to freshwaters that represent drinking water sources. This study examined adsorption of two polycyclic aromatic hydrocarbons (PAHs), phenanthrene and fluoranthene, by virgin and weathered polyethylene (PE) in both artificial and natural freshwater matrices. Adsorption kinetics and isotherms conducted in artificial freshwater (AFW) consistently showed higher adsorption onto smaller (200 μm) PE when compared to 1090 μm PE. Adsorption mechanisms were primarily associated with hydrophobic interactions and monolayer chemisorption. As well, environmental factors including dissolved organic matter (DOC), pH, and polymer weathering also impacted adsorption. This work provides new insights regarding the adsorption of organic pollutants to better understand the risk of MPs in drinking water sources.

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