Assessing the potential risk and relationship between microplastics and phthalates in surface seawater of a heavily human-impacted metropolitan bay in northern China
Résumé
The impacts of microplastics (MPs) and phthalates (PAEs), a class of MP-associated contaminants, on the marine environment are not thoroughly understood despite concern over their adverse effects on humans and ecosystems. Field studies linking MPs and PAEs in seawater have not yet been reported. We investigate for the first time the correlation between MPs contamination and the presence of PAEs in the surface seawater of Jiaozhou Bay (JZB), a semi-enclosed metropolitan bay in northern China heavily impacted by human activity. The abundance of MPs, dominated by polyethylene and polyethylene terephthalate mostly smaller than 2 mm, ranged between 24.44 items/m3 and 180.23 items/m3, with the majority being black and transparent fibers and fragments. Concentrations of PAEs varied from 129.96 ng/L to 921.22 ng/L. Relatively higher abundances of MPs and higher concentrations of PAEs were generally found in areas near riverine inputs and sewage treatment plants. There was a strong correlation between PAEs concentration and MPs abundance, suggesting that they are closely linked. In a risk assessment combining PAEs and MPs, the risk quotients (RQs) indicated that the ecological risk of di-n-butyl phthalate in JZB was relatively high (0.046
Domaines
Sciences de l'environnementOrigine | Fichiers produits par l'(les) auteur(s) |
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https://hal.science/hal-03442135
Soumis le : jeudi 25 novembre 2021-10:23:38
Dernière modification le : vendredi 19 avril 2024-16:18:54
Archivage à long terme le : samedi 26 février 2022-18:29:54
Citer
Yandong Liu, Zhaozhao Li, Isabel Jalón-Rojas, Xiao Hua Wang, Erick Fredj, et al.. Assessing the potential risk and relationship between microplastics and phthalates in surface seawater of a heavily human-impacted metropolitan bay in northern China. Ecotoxicology and Environmental Safety, 2020, 204, pp.111067. ⟨10.1016/j.ecoenv.2020.111067⟩. ⟨hal-03442135⟩
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