Deciphering the role of nonylphenol adsorption in soil by microplastics with different polarities and ageing processes

Xinyou Zhang, Wei Guo, Linzhu Du, Junhui Yue, Binyu Wang, Jun Li, Shuhang Wang, Jiang Xia, Zhihao Wu, Xu Zhao, Yue Gao

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In the soil environment, microplastics (MPs) commonly coexist with organic pollutants such as nonylphenol (NP), affecting the migration of NP through adsorption/desorption. However, few studies have focused on the interaction between NP and MPs in soil, especially for MPs of different types and ageing characteristics. In this study, non-polar polypropylene (PP) and polar polyamide (PA) MPs were aged either photochemically (144 h) or within soil (60 days), then used to determine the effect of 5% MPs on the adsorption behaviour of NP (0.1-4.0 mg/L) in soil. Results showed that both ageing processes significantly promoted the conversion of -CH3 groups to C-O and C=O on the surface of PPMPs, while PAMPs exhibited amide groups changes and a reduction in average particle size due to ageing. Additionally, both ageing processes promoted the adsorption of NP by soil containing PPMPs, due to an increase in oxygen-containing functional groups and specific surface area. In contrast, the NP adsorption capacity of soil con
Originele taal-2English
Artikelnummer117254
Pagina's (van-tot)1-17
Aantal pagina's17
TijdschriftEcotoxicology and Environmental Safety
Volume287
DOI's
StatusPublished - 15 nov. 2024

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