Titanium-doped PET nanoplastics of environmental origin as a true-to-life model of nanoplastic

The increased presence of secondary micro/nanoplastics (MNPLs) in the environment requires urgent studies on their potentially hazardous effects on exposed organisms, including humans. In this context, it is essential to obtain representative MNPL samples for such purposes. In our study, we have obt...

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Detalles Bibliográficos
Autores: Villacorta, Aliro|||0000-0003-2737-4232, Vela, Lourdes|||0000-0002-5785-8441, Morataya Reyes, Michelle|||0000-0001-9620-2069, Llorens-Chiralt, Rquel, Rubio Lorente, Laura|||0000-0002-2088-3803, Alaraby, Mohamed|||0000-0001-7488-3318, Marcos Dauder, Ricardo|||0000-0001-7891-357X, Hernández Bonilla, Alba|||0000-0001-6938-1233
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:275144
Acceso en línea:https://ddd.uab.cat/record/275144
https://dx.doi.org/urn:doi:10.1016/j.scitotenv.2023.163151
Access Level:acceso abierto
Palabra clave:PET(Ti) nanoplastics
Obtention
Characterization
Cell internalization
Descripción
Sumario:The increased presence of secondary micro/nanoplastics (MNPLs) in the environment requires urgent studies on their potentially hazardous effects on exposed organisms, including humans. In this context, it is essential to obtain representative MNPL samples for such purposes. In our study, we have obtained true-to-life NPLs resulting from the degradation, via sanding, of opaque PET bottles. Since these bottles contain titanium (TiONPs), the resulting MNPLs also contain embedded metal. The obtained PET(Ti)NPLs were extensively characterized from a physicochemical point of view, confirming their nanosized range and their hybrid composition. This is the first time these types of NPLs are obtained and characterized. The preliminary hazard studies show their easy internalization in different cell lines, without apparent general toxicity. The demonstration by confocal microscopy that the obtained NPLs contain Ti samples offers this material multiple advantages. Thus, they can be used in in vivo approaches to determine the fate of NPLs after exposure, escaping from the existing difficulties to follow up MNPLs in biological samples.

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