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Microplastic Aerosol Contamination in Porto (Portugal)
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Researchers conducted the first long-term 18-month monitoring of airborne microplastics in Porto, Portugal, collecting bi-weekly samples using a standardized NILU collector from September 2022 to March 2024. The study characterized the types, sizes, and seasonal patterns of microplastic aerosol deposition in an urban environment.
Microplastic pollution, particularly particles smaller than 5 mm, poses significant environmental and health risks due to their potential for long-range transport and inhalation. This study provides the first long-term assessment of airborne microplastics in Porto, Portugal, over 18 months (September 2022 to March 2024). Bi-weekly samples were collected using a Microplastic Collector NILU, which were size-fractionated into five categories (>125 μm, 125-63 μm, 63-25 μm, 25-12 μm, and 12-1.2 μm), and quantified via optical microscopy. Microplastics (26 to 1,484 MPs/day/m²) and fibers (14 to 646 fibers/day/m²) showed increasing pollution trends. With a focus on the 12-1.2 μm size-range due to its classification as PM10 and PM2.5, the highest microplastic concentrations were 164 MPs/day/m² (12-1.2 μm) and 534 MPs/day/m² (25-12 μm). Recovery rates of methodology varied among polymers, with PP, PE-HD, and ABS showing high accuracy (75.9%) and PES significantly lower (26.5%). The study highlights significant temporal variability in airborne microplastic pollution, increasing trends, and the need for ongoing monitoring and targeted mitigation strategies to address associated health risks.
More Papers Like This
Microplastic Aerosol Contamination in Porto (Portugal)
AI summary Read the abstract
Researchers conducted the first long-term assessment of airborne microplastics in Porto, Portugal, collecting samples over 18 months. Microplastic concentrations ranged from 26 to 1,484 particles per day per square meter, with significant temporal variability and correlations with weather conditions. Particles in the smallest size range (1.2 to 12 micrometers) are classified as PM10 and PM2.5, highlighting potential respiratory health concerns from inhaling airborne microplastics.
Identificação e quantificação de microplásticos na atmosfera do Porto e riscos para a saúde humana
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Researchers investigated the presence of airborne microplastics in Porto, Portugal, examining how atmospheric particles can adsorb polycyclic aromatic hydrocarbons (PAHs) and other pollutants, raising concern about daily human exposure to microplastics carrying potentially carcinogenic compounds that may accumulate in blood, lungs, and brain tissue.
Characterization of Atmospheric Microplastics in a Sub-urban area of northwest of Spain
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Atmospheric microplastics were characterized in a sub-urban area of northwestern Spain using bulk deposition collectors over an extended period. The study found microplastics in all samples, with fibers being the dominant type and polyester being the most common polymer. The findings contribute to the growing evidence that atmospheric microplastic deposition is widespread and highlight the need for standardized sampling protocols to compare results across studies.
Quantification and characterization of microplastics in the atmosphere of São Carlos – SP
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This Brazilian study quantified and characterized microplastics collected from the atmosphere of São Carlos, São Paulo state, contributing to the growing evidence that airborne microplastics are a significant but underappreciated exposure pathway for humans and ecosystems. The study provides baseline data on airborne plastic particle concentrations in a mid-sized Brazilian city.
Microplastics and particulate matter: assessment of atmospheric pollution in the Region of Hortênsias, Brazil
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Researchers measured microplastic concentrations alongside particulate matter in the atmosphere of an urban area, characterizing the size, morphology, and polymer composition of airborne plastic particles and assessing the contribution of different anthropogenic sources to atmospheric MP pollution.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.