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Effects of polymer aging on sorption of 2,2′,4,4′-tetrabromodiphenyl ether by polystyrene microplastics

Chemosphere 2020 107 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Chao Chai Chao Chai, Chao Chai Juan Wu, Pengcheng Xu, Pengcheng Xu, Chao Chai, Wei Ge, Pengcheng Xu, Dong Ma, Qinghua Chen, Chao Chai, Chao Chai Wei Ge, Wei Ge, Dong Ma, Tao Jiang, Tao Jiang, Wei Ge, Wei Ge, Tao Jiang, Tao Jiang, Tao Jiang, Chao Chai, Chao Chai Chao Chai Chao Chai, Chao Chai, Chao Chai, Chao Chai, Chao Chai, Chao Chai, Wei Ge, Chao Chai Chao Chai Chao Chai Chao Chai Chao Chai Chao Chai Chao Chai Chao Chai, Chao Chai, Chao Chai, Chao Chai Dong Ma, Chao Chai, Chao Chai

Summary

Researchers investigated how different aging processes — seawater soaking, UV irradiation, and their combination — affect the sorption of the brominated flame retardant BDE-47 onto polystyrene microplastics, finding that aging altered sorption capacity and that environmental factors including salinity, pH, and dissolved organic matter further modulated contaminant uptake.

Polymers

Study Type Environmental

The sorption behavior of 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) on aged polystyrene (PS) microplastics via seawater soaking, ultraviolet (UV) irradiation, seawater soaking and UV irradiation together was investigated. The effects of environmental factors including salinity, pH, and dissolved organic matter (DOM) on sorption of BDE-47 by the aged PS microplastics were analyzed. The equilibrium sorption capacity of BDE-47 by virgin PS, aged PS with seawater soaking, aged PS with UV irradiation and aged PS with seawater soaking and UV irradiation was 6.16, 4.96, 3.53, and 3.75 ng/g, respectively. The decrease in sorption capacity was related to the increase of surface crystallinity and the appearance of surface oxygen-containing functional groups. The kinetic and isotherm models suggested that aging did not change the sorption mechanism of BDE-47 on PS microplastics. pH had negligible impacts on BDE-47 sorption by virgin and aged PS. Sorption capacity of BDE-47 on aged PS in water with high salinity was lower than that on virgin PS, and DOM has less effect on the sorption of BDE-47 on aged PS.

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