We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Atmospheric Levels of Benzene and C<sub>1</sub>-C<sub>2</sub> Carbonyls in San Nicolas de los Garza, Nuevo Leon, Mexico: Source Implications and Health Risk.
- Authors
Bretón, Julia Griselda Cerón; Bretón, Rosa María Cerón; Kahl, Jonathan D. W.; del Carmen Lara-Severino, Reyna; Lara, Evangelina Ramírez; de la Luz Espinosa Fuentes, María; Marrón, Marcela Rangel; Chi, Martha Patricia Uc
- Abstract
Atmospheric benzene and carbonyls were studied in San Nicolas de los Garza, Nuevo Leon, during 2011 and 2012. The relative abundance for measured VOCs was the following: formaldehyde (9.06 μg m.-3) > acetaldehyde (8.06 μg m.-3) > benzene (0.65 μg m.-3). All measured VOCs had a clear 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.
- Subjects
ATMOSPHERIC sciences; CARBONYL compounds; ATMOSPHERIC chemistry; AIR pollution; METEOROLOGY
- Publication
Atmosphere, 2017, Vol 8, Issue 10, p196
- ISSN
2073-4433
- Publication type
Article
- DOI
10.3390/atmos8100196