Plastics in biogenic matrices intended for reuse in agriculture and the potential contribution to soil accumulation.

Autor: Magni S; Dipartimento di Bioscienze, Università degli Studi di Milano, Italy., Fossati M; Istituto di Ricerche Farmacologiche Mario Negri IRCSS, Italy., Pedrazzani R; Dipartimento di Ingegneria Meccanica e Industriale, Università degli Studi di Brescia, Italy., Abbà A; Dipartimento di Ingegneria Civile, Architettura, Territorio, Ambiente e di Matematica, Università degli Studi di Brescia, Italy., Domini M; Dipartimento di Ingegneria Civile, Architettura, Territorio, Ambiente e di Matematica, Università degli Studi di Brescia, Italy., Menghini M; Dipartimento di Ingegneria Meccanica e Industriale, Università degli Studi di Brescia, Italy., Castiglioni S; Istituto di Ricerche Farmacologiche Mario Negri IRCSS, Italy., Bertanza G; Dipartimento di Ingegneria Civile, Architettura, Territorio, Ambiente e di Matematica, Università degli Studi di Brescia, Italy., Binelli A; Dipartimento di Bioscienze, Università degli Studi di Milano, Italy., Della Torre C; Dipartimento di Bioscienze, Università degli Studi di Milano, Italy. Electronic address: camilla.dellatorre@unimi.it.
Jazyk: angličtina
Zdroj: Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2024 May 15; Vol. 349, pp. 123986. Date of Electronic Publication: 2024 Apr 16.
DOI: 10.1016/j.envpol.2024.123986
Abstrakt: The spread of biogenic matrices for agricultural purposes can lead to plastic input into soils, raising a question on possible consequences for the environment. Nonetheless, the current knowledge concerning the presence of plastics in biogenic matrices is very poor. Therefore, the objective of the present study was a quali-quantitative characterization of plastics in different matrices reused in agriculture as manures, digestate, compost and sewage sludges. Plastics were quantified and characterized using a Fourier Transform Infrared Spectroscopy coupled with an optical microscope (μFT-IR) in Attenuated Total Reflectance mode. Our study showed the presence of plastics in all the investigated samples, albeit with differences in the content among the matrices. We measured a lower presence in animal matrices (0.06-0.08 plastics/g wet weight w.w.), while 3.14-5.07 plastics/g w.w. were measured in sewage sludges. Fibres were the prevalent shape and plastic debris were mostly in the micrometric size. The most abundant polymers were polyester (PEST), polypropylene (PP) and polyethylene (PE). The worst case was observed in the compost sample, where 986 plastics/g w.w. were detected. The majority of these plastics were compostable and biodegradable, with only 8% consisting of fragments of PEST and PE. Our results highlighted the need to thoroughly evaluate the contribution of reused matrices in agriculture to the plastic accumulation in the soil system.
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 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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