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. 2023 May 17;57(21):8139–8148. doi: 10.1021/acs.est.3c01877

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© 2023 The Authors. Published by American Chemical Society

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Effects of eco-corona and water extracted soil metabolites (WESMs) co-solubility on the sorption reduction of dibutyl phthalate (DBP) on microplastic. (a) Box and whisker plot of the inhibition ratio due solely to the eco-corona on the sorption of DBP, vs the inhibition ratio of eco-corona and WESM’s co-solubility on the sorption of DBP, both are compared to the sorption of DBP to pure microplastics in water. (b) Relative contributions of eco-corona and WESMs co-solubility to inhibit the sorption of DBP on microplastics. The inhibition is quantified as the ratio of reduction of two system partition ratio (K_P = C_sorbed/C_water), e.g., for eco-corona, inhibition = (K_P-ck – K_P-eco-corona)/K_P-ck; for WESMs, inhibition = (K_P-ck – K_P-WESMs)/K_P-ck. K_P-ck denotes the partition coefficient of DBP sorption on microplastics in pure water. PE_black-film: black polyethylene film microplastics; PE_white-film: white polyethylene film microplastics; PE_pure-granule: pure polyethylene microplastic granules (***p ≤ 0.001, **p ≤ 0.01, and *p ≤ 0.05).