Effect of temperature and sunlight on the leachability potential of BPA and phthalates from plastic litter under marine conditions.

Autor: Dimassi SN; Environmental Science Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, P.O. Box: 2713, Doha, Qatar; Food-Water-Waste (FWWS) Sustainability Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, P.O. Box: 2713, Doha, Qatar., Hahladakis JN; Food-Water-Waste (FWWS) Sustainability Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, P.O. Box: 2713, Doha, Qatar; Chemistry and Earth Sciences Department, Qatar University, College of Arts and Sciences, P.O. Box: 2713, Doha, Qatar. Electronic address: ichachladakis@qu.edu.qa., Yahia MND; Environmental Science Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, P.O. Box: 2713, Doha, Qatar., Ahmad MI; Central Laboratories Unit, Qatar University, P.O. Box: 2713, Doha, Qatar., Sayadi S; Biotechnology program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, P.O. Box: 2713, Doha, Qatar., Al-Ghouti MA; Environmental Science Program, Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, P.O. Box: 2713, Doha, Qatar. Electronic address: mohammad.alghouti@qu.edu.qa.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2023 Oct 10; Vol. 894, pp. 164954. Date of Electronic Publication: 2023 Jun 17.
DOI: 10.1016/j.scitotenv.2023.164954
Abstrakt: This study investigates the leaching potential of several additives embedded in six different plastic types when exposed to extreme simulated marine conditions for 140 days. The findings achieved herein contribute to a better understanding of the impact of macro- and microplastics leaching harmful compounds (bisphenol A (BPA) and phthalates) in the marine environment when exposed to harsh climatic conditions. Leachability experiments showed that bis(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), and BPA were detected in seawater (SW) samples. Furthermore, while analysing 100 mL of SW per each sample, the total leachate concentrations of the identified compounds ranged from 5 μg/L to 123 μg/L, after 140 days of exposing a total of 120 plastic samples (96 samples micro- and 24 macro-plastics) to SW conditions It was observed that the leaching of DEHP was promoted by wave abrasion, high temperature and sunlight, while the leaching of DBP was favoured by wave abrasion. Findings showed that polypropylene (PP) was the most attributable plastic type in the leaching of DBP with an average concentration of 5.3 μg/L, whereas high-density polyethylene (HDPE) was the most responsible plastic-type for the leaching of DEHP, with an average concentration of 123 μg/L. Our results suggest that most of the phthalates and BPA will, ultimately, leach out to the SW environment after a longer period.
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 © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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