Resumen

GARCIA, Neyma et al. Concentraciones atmosféricas de pts y su contenido de metales en una zona adyacente a una planta de cemento. INCI [online]. 2002, vol.27, n.9, pp.476-481. ISSN 0378-1844.

The atmospheric levels of total suspended particulate (TSP) and their content of Pb, Ca, Ni, Fe and Mn were measured in an area adjacent to a cement industry, and the possible origin of these species explored. Air samples were collected from two sites belonging to the ICLAM Network (Red-MECA), one located in Municipio San Francisco, an area under anthropic influences and the other one in Sinamaica, used as control site. Monitoring was performed during the dry and wet seasons using a Hi-Vol sampler, and the samples were analyzed gravimetrically and by atomic absorption spectrophotometry. In order to predict the origin of the different species the enrichment factors of the local ground, the frequency distribution of the concentrations and binary correlation analysis were used. The results show that 91% of the samples in San Francisco exceeded the Venezuelan standard (75µg/m3), while 100% of Sinamaica’s samples were below this limit. The enriched concentrations of Pb, V and Ni, their frequency distribution and the good correlations among them, indicate an important contribution of anthropic particle sources. Lead represents the contribution of mobile sources. The non-enriched concentrations of Mn, Fe and Ca can be considered of natural origin.

Palabras clave : Concentraciones Atmosféricas de PTS; Metales en Atmósfera Urbana ; Metales en Partículas.