Abstract

This article presents results of the particulate measurement P.M. 2.5 and its presence in some metal elements. The monitoring took place once a week from April to December 2008. The material was collected taking as a rule the value of 65 μg /m 3, delivered by E.P.A. to capture M.P. 2.5, by means of a system that quantifies metal presence, measuring its concentration with atomic absorption equipment including a graphite oven. The results show the PM 2.5 annual average is 38.5 μg/m3, surpassing the standard only in three occasions. Regarding metallic element values, Fe presents the largest concentration with an average of 2.5 m g/m; the lowest concentration was PB with 0.01 m g/m 3. Most measurements are according to World Health Organization recommendations. It is concluded that PM 2.5 concentrations are under this rule, as well as the studied metals.