WSEAS Transactions on Environment and Development
Print ISSN: 1790-5079, E-ISSN: 2224-3496
Volume 10, 2014
Seasonal and Diurnal Variations of Carbonyl Compounds and Air Criteria Pollutants in Monterrey, Mexico
Authors: ,
Abstract: Carbonyl compounds levels (formaldehyde and acetaldehyde) were measured in an urban site located in Monterrey Mexico using an active sampling during winter and spring, 2013. A total of 39 samples were collected using DNPH-cartridges at 09:00 h, 12:00 h and 15:00 h, and then analyzed using high performance liquid chromatography with ultraviolet detector (HPLC-UV). CO, O3, NO, NO2, NOx, and SO2 were measured by automatic analyzers during the sampling period. Formaldehyde was found to be the most abundant carbonyl. Both carbonyls showed clear diurnal and seasonal patterns. Formaldehyde mean concentrations were 35.74 + 4.37, and 33.67 + 3.92 for spring and winter, respectively. Whereas, acetaldehyde mean concentrations were 25.68 + 2.18, and 28.31 +7.91 for spring and autumn, respectively. Levels of carbonyls were higher when wind blew from WSW, where heavy traffic avenues, a railway and electric power companies are located. These sources could influence the levels of carbonyls measured in this study.
Search Articles
Pages: 347-357
WSEAS Transactions on Environment and Development, ISSN / E-ISSN: 1790-5079 / 2224-3496, Volume 10, 2014, Art. #37