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Pollutants Sorbed Onto Microplastics
Summary
This review summarizes research on the sorption of organic pollutants and metal ions onto microplastics, examining how polymer type, weathering degree, pH, and ionic strength influence sorption capacity and kinetics. It highlights increasing concern around antibiotic sorption onto microplastics due to enhanced bioavailability for ingesting organisms, and reviews Langmuir, Freundlich, and linear isotherm models used to characterize these interactions.
Microplastics (MPs) are ubiquitous and pose a potential threat to the marine environment and human health. This chapter summarizes the reported research on sorption of organic pollutants and metals ions onto MPs. It reviews the sorption capacity of different types of pollutants onto MPs. The chapter then reviews the factors that influence the interactions between pollutants and MPs, such as the type of polymer, the degree of weathering, pH, and ionic strength. It also summarizes the sorption kinetics and isotherms of pollutants onto MPs and discusses the sorption mechanisms. The interaction between antibiotics and MPs is receiving increasing attention because of their concentration by MPs that increases their potential bioavailability to ingesting organisms. The linear, Langmuir, and Freundlich isotherm models are three of the most frequently used models in the adsorption of organic pollutant and metals ions by MPs.