Relationship between Total Oxidants and Nitrogen Oxides in the air of Rosario City

Abstract

Simultaneous measurements of the levels of total oxidants and nitrogen oxides in the downtown area of the Rosario City were analyzed. For these determinations, two internationally recognized monitoring methodologies (ASTM and EPA) have been used, finding that the values ​​measured with the first method were not reliable, while those obtained in the second instance were consistent with measured levels in communities of similar characteristics. The quantities measured at the sampling site for both pollutants were, mostly, higher than the guide air quality values ​​set by the standards. At the same time, it was determined that 30% of the total oxidants are composed of nitrogen dioxide. With this relationship, the concentration value of one contaminant could be approximated as a function of the other one.