1. Chemical and morpho-structural characterization of atmospheric aerosol (PM10 and PM2.5) in a city of São Paulo state, Brazil
- Author
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Hugo Silva, Bruno Trevizan Franzin, Mary Rosa Rodrigues de Marchi, Ossamu Hojo, Cristina M. R. R. Oliveira, Filipe Corrêa Guizellini, Iêda Aparecida Pastre, Fernando Luis Fertonani, Universidade Estadual Paulista (Unesp), Universidade de Lisboa, and ISEL-ADEQ
- Subjects
Pollutant ,Urban aerosol ,Urban aerossol ,Health, Toxicology and Mutagenesis ,IC ,PM2.5 ,General Medicine ,010501 environmental sciences ,Particulates ,Combustion ,Atmospheric sciences ,01 natural sciences ,Pollution ,Aerosol ,SEM-EDS ,PM10 ,HYSPLIT ,Environmental Chemistry ,Mass concentration (chemistry) ,Environmental science ,Air quality index ,Air mass ,0105 earth and related environmental sciences - Abstract
Made available in DSpace on 2021-06-25T11:14:48Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 To access the sources of air pollutants is crucial to control atmospheric pollution in urban areas, minimizing human exposure. Particulate matter is a pollutant of great concern making its chemical and morpho-structural characterization of enormous importance. The present work aims at the characterization of atmospheric PM10 and PM2.5. Data of the aerosol mass concentration was correlated by multivariate analysis with water-soluble ion fraction composition accessed by ion chromatography (IC), as well as with meteorological information and air mass backward trajectories. The gravimetric analysis presented average values 3 to 4 times higher than the guide values recommended by the World Health Organization (WHO). A morpho-structural analysis by SEM/FEG coupled to EDS was also carried out identifying the coarse fraction elements from minerals and from soil resuspension organic spherical particles that originated from combustion processes as well as Ti, associated with long-distance transportation. In the fine fraction, Zn with origin probably in tires and vehicle brakes was found. These origins were confirmed by the air masses’ backward trajectories obtained by the HYSPLIT model (NOAA). This study contributes to a better understanding of the complex composition of the particulate material in the atmosphere of Araraquara City, resulting from the combination of local and long-distance sources, and serves as a basis for the comparison with future studies related to the air quality at this and other regions in Brazil and in the world. Graphical abstract: [Figure not available: see fulltext.] São Paulo State University (Unesp) Institute of Chemistry Centro de Química Estrutural Faculdade de Ciências Universidade de Lisboa, Edif. C8, Campo Grande São Paulo State University (Unesp) Biosciences Languages and Exact Sciences Institute, Ibilce Área Departamental de Engenharia Química do Instituto Superior de Engenharia de Lisboa ISEL-ADEQ, Rua Conselheiro Emídio Navarro, 1 São Paulo State University (Unesp) Institute of Chemistry São Paulo State University (Unesp) Biosciences Languages and Exact Sciences Institute, Ibilce
- Published
- 2021