dc.creatorRUBIO,MARIA A
dc.creatorSÁNCHEZ,KAREN
dc.creatorLISSI,E
dc.date2011-01-01
dc.date.accessioned2017-03-07T16:38:20Z
dc.date.available2017-03-07T16:38:20Z
dc.identifierhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072011000200019
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/405037
dc.descriptionSantiago of Chile presents, in autumn and summer, high levels of oxidants and, in particular of ozone. Peculiar features of this phenomenon are a strong dependence of the contamination with the daily maxima temperature and a weekend effect, comprising relatively high ozone levels in spite of reduced emissions of its precursors. A common explanation of these effects could be an increase in the VOCs/NOx ratio. In order to test this possibility we perform la multiparametric analysis of Santiago's historical data. This data treatment corroborates a robust dependence of maxima ozone levels with temperature and a moderate weekend effect. In fact, ozone levels in weekend days are similar to those of working days, in spite of significantly reduced primary emissions (29 % of NOx and 20 % of CO). However, no increase in VOCs/NOx ratios, measured at the early morning rush out hours, is observed in high temperature days. On the other hand, the data suggest a moderate increase of the VOCs/NOx ratio in week ends. This would indicate that other factors beyond a simple increase in VOCs levels contribute to the above mentioned peculiarities of oxidant levels in the urban atmosphere of Santiago.
dc.formattext/html
dc.languageen
dc.publisherSociedad Chilena de Química
dc.sourceJournal of the Chilean Chemical Society v.56 n.2 2011
dc.subjectOzone
dc.subjectSantiago of Chile
dc.subjectVOCs/NOx ratio
dc.subjectweekend effect
dc.titleOZONE LEVELS ASSOCIATED TO THE PHOTOCHEMICAL SMOG IN SANTIAGO OF CHILE: THE ELUSIVE ROL OF HYDROCARBONS
dc.typeArtículos de revistas


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