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Chemosphere

Title:		Assessment of atmospheric levels of carbonyls in an urban environment of Argentina
Author(s):		Baptista A; Villanueva F; Filippi I; Cabanas B; Teruel MA;
Address:		"Laboratorio Universitario de Quimica y Contaminacion del Aire (L.U.Q.C.A), Instituto de Investigaciones en Fisicoquimica de Cordoba (I.N.F.I.Q.C.), Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba. Ciudad Universitaria, 5000, Cordoba, Argentina. Universidad de Castilla-La Mancha, Instituto de Investigacion en Combustion y Contaminacion Atmosferica, Camino de Moledores S/n, Ciudad Real, 13071, Spain; Parque Cientifico y Tecnologico de Castilla-La Mancha, Paseo de La Innovacion 1, Albacete, 02006, Spain. Electronic address: Florentina.VGarcia@uclm.es. Centro de Investigaciones en Bioquimica Clinica e Inmunologia (CIBICI), Departamento de Bioquimica Clinica, Facultad de Ciencias Quimicas, CONICET, Universidad Nacional de Cordoba, 5000, Cordoba, Argentina. Universidad de Castilla-La Mancha, Instituto de Investigacion en Combustion y Contaminacion Atmosferica, Camino de Moledores S/n, Ciudad Real, 13071, Spain; Universidad de Castilla-La Mancha, Departamento de Quimica Fisica, Facultad de Ciencias y Tecnologias Quimicas, Avenida Camilo Jose Cela S/n, Ciudad Real, 13071, Spain. Laboratorio Universitario de Quimica y Contaminacion del Aire (L.U.Q.C.A), Instituto de Investigaciones en Fisicoquimica de Cordoba (I.N.F.I.Q.C.), Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba. Ciudad Universitaria, 5000, Cordoba, Argentina. Electronic address: mariano.teruel@unc.edu.ar"
Journal Title:		Chemosphere
Year:		2023
Volume:		20230913
Issue:
Page Number:		140168 -
DOI:		10.1016/j.chemosphere.2023.140168
ISSN/ISBN:		1879-1298 (Electronic) 0045-6535 (Linking)
Abstract:		"It is well-documented that carbonyl compounds have adverse effects on human health. On the other hand, these oxygenated volatile organic compounds (OVOCs) are precursors of secondary pollutants such as tropospheric ozone or peroxy acetyl nitrate (PAN). In particular, formaldehyde, the simplest carbonyl, is the most abundant carbonyl in the air generated from the degradation of most volatile organic compounds (VOCs). This work presents for the first time the characterization and determination of levels of carbonyl compounds by passive monitoring performed from April-December 2021 in the city of Cordoba, Argentina, the second most populated Mediterranean city located in the center of the country. Annual concentrations, considering the 11 carbonyls measured, were in the range of 0.13-8.75 mugm(-3). Formaldehyde and acetaldehyde were the carbonyls detected in the highest annual average concentrations of 4.44 +/- 1.75 mugm(-3) and 3.85 +/- 1.44 mugm(-3), respectively. These carbonyls represent a contribution of around 40-57% on total carbonyls measured. Statistical analysis to determine significant differences and Pearson correlations with the meteorological parameters were performed. Spring and summer were found to be the seasons with the highest carbonyl concentration linked to forest fire episodes, especially in springtime. The values for the C(1)/C(2) and C(2)/C(3) ratios showed that sources of carbonyl formation are anthropogenic. In addition, the prop-Equiv concentration was determined, where formaldehyde and acetaldehyde were the main producers of tropospheric ozone. The ozone formation potential (OFP) showed that spring and summer are the seasons where carbonyls contribute to the formation of tropospheric ozone.This study represents a first approach of the carbonyl concentration in the city and of the influence of meteorological parameters on the behavior of carbonyls"
Keywords:		Humans *Air Pollutants/analysis *Volatile Organic Compounds/analysis Argentina Environmental Monitoring Formaldehyde/analysis Acetaldehyde/analysis *Ozone/analysis China Carbonyl concentration Outdoor air Passive monitoring Seasonal variation;
Notes:		"MedlineBaptista, Andrea Villanueva, Florentina Filippi, Iohanna Cabanas, Beatriz Teruel, Mariano A eng England 2023/09/16 Chemosphere. 2023 Nov; 342:140168. doi: 10.1016/j.chemosphere.2023.140168. Epub 2023 Sep 13"