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Título : Occurrence and transport of microplastics sampled within and above the planetary boundary layer
Autor : González Pleiter, M.
Edo, C.
Aguilera, Á.
Viúdez Moreiras, Daniel
Pulido Reyes, G.
González Toril, E.
Osuna, Susana
De Diego Castilla, Graciela
Leganés, F.
Fernández Piñas, F.
Rosal, R.
Palabras clave : Airborne Microplastics;Aircraft Sampling;Atmospheric Transport;Microplastics Deposition;Planetary Boundary Layer
Fecha de publicación : 20-mar-2021
Editorial : Elsevier BV
DOI: 10.1016/j.scitotenv.2020.143213
Versión del Editor: https://www.sciencedirect.com/science/article/abs/pii/S0048969720367449
Citación : Science of the Total Environment 761: 143213
Resumen : Nowadays, there is no direct evidence about the presence of microplastics (MPs) in the atmosphere above ground level. Here, we investigated the occurrence, chemical composition, shape, and size of MPs in aircraft sampling campaigns flying within and above the planetary boundary layer (PBL). The results showed that MPs were present with concentrations ranging from 1.5 MPs m−3 above rural areas to 13.9 MPs m−3 above urban areas. MPs represented up to almost one third of the total amount of microparticles collected. Fourier Transform Infrared Spectroscopy allowed identifying seven types of MPs with the highest diversity corresponding to urban areas. Atmospheric transport and deposition simulations were performed using the HYbrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model. Air mass trajectory analyses showed that MPs could be transported more than 1000 km before being deposited. This pioneer study is the first evidence of the microplastic presence above PBL and their potential long-range transport from their point of release even crossing distant borders.
Descripción : First direct evidence of microplastics in the atmosphere at high altitude. Air mass trajectory analyses showed long-distance transport. Urban areas could be sources of microplastics ending up in distant areas. Atmospheric long-range transport of microplastics is a global pollution issue.
URI : http://hdl.handle.net/20.500.12666/499
E-ISSN : 1879-1026
ISSN : 0048-9697
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