Atmospheric Levels of Benzene and C1-C2 Carbonyls in San Nicolas de los Garza, Nuevo Leon, Mexico: Source Implications and Health Risk

Cerón Bretón, Julia Griselda y Cerón Bretón, Rosa María y Kahl, Jonathan D.W. y Lara Severino, Reyna del Carmen y Ramírez Lara, Evangelina y Espinosa Fuentes, María de la Luz y Rangel Marrón, Marcela y Uc Chi, Martha Patricia (2017) Atmospheric Levels of Benzene and C1-C2 Carbonyls in San Nicolas de los Garza, Nuevo Leon, Mexico: Source Implications and Health Risk. Atmosphere, 8 (12). pp. 1-26. ISSN 2073-4433

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Resumen

Abstract: AtmosphericbenzeneandcarbonylswerestudiedinSanNicolasdelosGarza,NuevoLeon, during 2011 and 2012. The relative abundance for measured VOCs was the following: formaldehyde (9.06 µgm−3)>acetaldehyde(8.06 µgm−3)>benzene(0.65 µgm−3). AllmeasuredVOCshadaclear seasonal trend with higher values of concentration during summer. Benzene and formaldehyde had a marked diurnal trend with the highest levels during morning, whereas acetaldehyde did not show a clear diurnal pattern. Meteorological analysis showed that the dominant winds came from NNE and ENE, suggesting that sources located in these directions contribute to the VOC levels. Principal component analysis (PCA) analysis revealed that photochemical activity influenced benzene and carbonyl levels during summer and that benzene was associated with vehicular traffic emissions during autumn and winter, showing good correlation with CO. Meteorological data showed that measured VOCs were influenced by regional sources. A health risk assessment showed that local exposure to carbonyls and benzene exceeded 1×10−6 for integrated lifetime cancer risk. People living in San Nicolas de los Garza, thus, have a probable risk of suffering cancer in their lifetime. It is, therefore, necessary to improve environmental policies for controlling VOC levels in this area. Keywords: VOCs; benzene; carbonyls; atmospheric pollution; health risk; Mexico

Tipo de elemento:	Article
Divisiones:	Ciencias Químicas
Usuario depositante:	Lic. Josimar Pulido
Creadores:	Creador Email ORCID Cerón Bretón, Julia Griselda NO ESPECIFICADO NO ESPECIFICADO Cerón Bretón, Rosa María NO ESPECIFICADO NO ESPECIFICADO Kahl, Jonathan D.W. NO ESPECIFICADO NO ESPECIFICADO Lara Severino, Reyna del Carmen NO ESPECIFICADO NO ESPECIFICADO Ramírez Lara, Evangelina NO ESPECIFICADO NO ESPECIFICADO Espinosa Fuentes, María de la Luz NO ESPECIFICADO NO ESPECIFICADO Rangel Marrón, Marcela NO ESPECIFICADO NO ESPECIFICADO Uc Chi, Martha Patricia NO ESPECIFICADO NO ESPECIFICADO
Fecha del depósito:	30 Abr 2020 01:45
Última modificación:	09 Sep 2022 18:59
URI:	http://eprints.uanl.mx/id/eprint/17489

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