Estudio toxicológico de la contaminación por cadmio y arsénico en las fuentes de abastecimiento de agua expuestas a la ceniza del volcán Tungurahua en las parroquias Guanando y la Providencia del cantón Guano provincia de Chimborazo

Abstract

In the parishes of Guanando and La Providencia Canton Guano of the province of Chimborazo, this research was designed a toxicological study of the sources of water supply of the parishes above, because it is near the Tungurahua volcano and can present the presence of heavy metals such as arsenic and cadmium.

He was the identification of these sources and obtained water samples for analysis that allowed identifying the analytes such as arsenic and cadmium that are present in these areas, all analyses were performed in the laboratory CESTTA of the Polytechnic School of Chimborazo. You apply a descriptive statistic was obtained where the average and variance, in turn obtained data were compared with permissible levels given current Ecuadorian regulations TULSMA Book VI, annex I, the Norma NTE - INEN 2011, and with international standards, coming to the conclusion that the arsenic and cadmium are within permissible levels given by these standards.

Was calculated daily dose average lifetime (DDVP), to which the inhabitants of these areas, as well as also the coefficient of danger (CP), are exposed allowing you to determine the population of these parishes Guanando and La Providencia, not found in toxicological risk since the results of the risk coefficient (CP), do not exceed the reference value recommended by the EPA (<1).