Investigating the sorption of Zinc-Oxide nanoparticles on Tire-wear particles and their toxic effects on Chlorella vulgaris: Insights from toxicological models and physiological analysis.

Autor: Ganie ZA; Environmental Nanoscience Laboratory, Department of Earth Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur, West Bengal 741246, India., Guchhait S; Environmental Nanoscience Laboratory, Department of Earth Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur, West Bengal 741246, India., Talib M; Environmental Nanoscience Laboratory, Department of Earth Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur, West Bengal 741246, India., Choudhary A; Environmental Nanoscience Laboratory, Department of Earth Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur, West Bengal 741246, India., Darbha GK; Environmental Nanoscience Laboratory, Department of Earth Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur, West Bengal 741246, India; Centre for Climate and Environmental Studies, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India. Electronic address: gkdarbha@gmail.com.
Jazyk: angličtina
Zdroj: Journal of hazardous materials [J Hazard Mater] 2024 Nov 26; Vol. 483, pp. 136648. Date of Electronic Publication: 2024 Nov 26.
DOI: 10.1016/j.jhazmat.2024.136648
Abstrakt: This study investigated the interaction of Tire-wear particles (TWPs) with Zinc-Oxide nanoparticles (ZNPs) and studied their individual and combined toxic effects on Chlorella vulgaris in the co-presence of Humics. Physiological parameters, including growth, photosynthetic pigments, oxidative stress, and membrane damage, were analysed using Flow cytometry. Adsorption experiments exhibited that ZNPs were significantly absorbed by TWPs (q max = 312.49 mg/g). A positive dose-response relation concerning inhibition in growth was observed in all treatment groups, and it was associated with reduced chlorophyll levels and damaged cell membranes. A negative impact of increased concentrations of TWPs and ZNPs was observed on anti-oxidant enzymes CAT and SOD; however, the impact was more severe when combined with exposure to both contaminants. Elevated concentrations of ZNPs and TWPs led to increased ROS production, lipid peroxidation and membrane damage, which could be contributing to the observed inhibition in growth. In the combined exposure groups, the Independent Action and the Abbott toxicity models revealed a synergistic effect on growth rates, which agreed with the Integrated Biomarker model results. The current study could enhance our understanding of the interaction between TWPs and metal nanoparticles in aquatic systems and offer novel understandings of the mechanisms underlying their combined toxic effects on microalgae.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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