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Article Dans Une Revue Ecotoxicology and Environmental Safety Année : 2020

Assessing the potential risk and relationship between microplastics and phthalates in surface seawater of a heavily human-impacted metropolitan bay in northern China

Yandong Liu
  • Fonction : Auteur
Zhaozhao Li
  • Fonction : Auteur
Xiao Hua Wang
  • Fonction : Auteur
Erick Fredj
  • Fonction : Auteur
Dahai Zhang
  • Fonction : Auteur
Lijuan Feng
  • Fonction : Auteur
Xianguo Li
  • Fonction : Auteur

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
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hal-03442135 , version 1 (25-11-2021)

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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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