AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
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Comparison of Concentration of Carbonyl Compounds in Two Periods (2012-2013 vs 2014-2015) in Tijuana Airshed B.C.
DEISY SUGEY TOLEDO ARANGURE, Guillermo Rodríguez-Ventura, Ernesto Velez-Lopez, Alejandro Gomez, Jesus Guerrero-García, Mariela Ruiz, Bernabe Adolfo Ochoa Morimoto, Yazmin Adilenne Montoya Camacho, Alejandra Jaramillo Bernal, Melvis Vega Garcia, Fernando Ruiz Patiño, Universidad Autonoma de Baja California,Tijuana,Mexico
Abstract Number: 158 Working Group: Carbonaceous Aerosols in the Atmosphere
Abstract Considering environmental aspects, Tijuana is one of the most affected by air pollution, this is due to the industrial and commercial area of the region, records Showing Ministry of Environmental Protection (SPA) of Baja California, specifically in the municipalities of Tijuana, Rosarito and Mexicali are in red dot Pollution (SPA, 2012-2020).
In Tijuana, Baja California, there is a monitoring program for air quality criteria pollutants (SPA, 2012-2020), with five monitoring stations for air basin -Rosarito Tijuana, reports of PM10 concentrations are published, PM2.5, ozone (O3), nitrogen oxides (NOx), sulfur oxide (SOx).
The method used is US EPA.- TO -11 Ambient air is sucked through Cartridges Sep- Pak silica chromatographic grade. These are coated with 2,4 dinitrophenylhydrazine (DNPH) acidified as derivatizing agent. (The sampling rate was 0.7L/m for a period of 24 hours.) (SOP MLD 022,2001).
For this, a comparative study of the levels of concentration of carbonyl compounds found in the period (1) 2012-2013 vs period (2) 2014-2015 (Method TO- 11A) was performed. The results obtained during the first period show that formaldehyde is the most abundant compound [ 6.14 mg/m3], followed by acetaldehyde [2.7μg/m3] and acetone [1,63μg/m3], for the second period was the most abundant compound formaldehyde [8.52 mg/m3], followed by acetaldehyde [6.64 mg/m3] and acetone [1,92μg/m3]. It can be concluded that the concentration levels followed the same pattern, only for the second period levels increased significantly.