Characterization of atmospheric particles: A study of particulate matter and microplastic in the Region of Hortênsias

Characterization of atmospheric particles: A study of particulate matter and microplastic in the Region of Hortênsias – Brazil

Published:2023-11-14 Issue: Volume: Page:
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Author:

Pletsch Patriane Noschang¹,Costa Gustavo Marques²,Morisso Fernando Dal Pont¹,Berlese Daiane Bolzan¹,de Quevedo Daniela Muller¹,Osório Daniela Migliavacca³

Affiliation:

1. Universidade Feevale

2. Federal Institute of Rio Grande do Sul

3. UNICAMP - Faculty of Technology

Abstract

Abstract Atmospheric pollution is one of the main consequences of anthropogenic activities in the environment. The insertion of particles suspended in the air, which are composed of dust, fumes, microplastics, and aerosols emitted by industries, vehicles, and constructions, alters the quality of the environment they are inserted into, impacting both human health and the environment. Therefore, this study aims to identify the atmospheric particles that may be influencing the air quality in the Region of Hortênsias/RS (municipalities of Canela and Gramado). The concentrations of PM2.5 and PM2.5−10 were evaluated at two sites from April 2021 to April 2022. The Fine and Coarse Particulate Matter Sampler (FCS) was used to collect samples at the site located in Canela (S1). In Gramado (S2), in addition to the FCS, a dichotomous sampler was also used for sampling. The filters were observed under a microscope to evaluate the presence of polymeric material. The selected particles were then analyzed by Scanning Electron Microscopy (SEM) coupled with Energy Dispersive X-Ray Spectroscopy (EDS). Six samples of PM2.5 did not meet the air quality standards recommended by the WHO Guideline. Alterations in the concentrations of PM2.5 were also observed in October and December 2021 at S1 and S2 and in April 2022 at S2. The results demonstrated low air quality, and the microscopic analysis detected the presence of particles with characteristics of polymeric material. These particles suggest traces of microplastics, in addition to the presence of vehicular soot and fly ash when analyzed by SEM/EDS.

Publisher

Research Square Platform LLC

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