Influence of the geographic location and house characteristics on the concentration of microplastics in indoor dust

Lorgio Valdiviezo-Gonzales, Paola Ortiz Ojeda, Dante Espinoza Morriberón, Carolina V. Colombo, Guido Noé Rimondino, Ana D. Forero López, Melisa D. Fernández Severini, Fabio Ernesto Malanca, Gabriel Enrique De-la-Torre

Producción científica: Contribución a una revistaArtículorevisión exhaustiva


Microplastics (MPs) are known for their ubiquity, having been detected in virtually any environmental compartment. However, indoor MPs concentrations are poorly studied despite being closely related to human exposure. The present study aims to evaluate the presence of MPs in settled atmospheric dust in 60 houses distributed in 12 districts of the metropolitan city of Lima, Peru, and investigate the influence of their geographical location and house characteristics. MPs concentration ranged from 0.01 to 33.9 MPs per mg of dust. Fibers and blue were the most frequent shape and color (98 % and 69 %, respectively). Also, 82 % of the particles were between 500 μm – 5 mm in size. A higher concentration of MPs was identified in the center-south of the city. The houses located on the highest floors (levels 4 to 13 to ground) displayed higher concentrations. MPs were primarily composed of polyester (PET), polypropylene (PP), and ethylene-vinyl acetate (EVA), among others. The polymers identified suggest that MPs derived from the fragmentation of components frequently found in houses, such as synthetic clothing, food storage containers, toys, carpets, floors, and curtains. The incorporation of MPs from the outside into dwellings is not ruled out. Future studies should evaluate the influence of consumption habits and housing characteristics on the abundance of MPs.

Idioma originalInglés
Número de artículo170353
PublicaciónScience of the Total Environment
EstadoPublicada - 20 mar. 2024
Publicado de forma externa


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