Evaluación de la concentración de arsénico en matrices acuosas del río piloto, Cantón Santa Rosa, El Oro, Ecuador, período 2019-2020

Abstract

At present, the displacement of water by to pollution is one of the main problems that encompasses human health and that puts developing countries worldwide at the critical level. Currently, the Santa Rosa Canton province of El Oro suffers the greatest ravages caused by indiscriminate mining since the waste produced in several mining plants is thrown into the Rivers of the different sites of this Canton and despite the fact that water passes through a treatment prior to the Potable water plant, none of these can counteract or eliminate contaminating metals, this pollution grows excessively since the miners ignore this problem and only seek its economic benefit thus causing damage to the health of the residents. Therefore, this research work was carried out to meet the objective of assessing arsenic levels in aqueous matrices of the Piloto River of the Santa Rosa Canton through atomic absorption spectrophotometry in the months of December, January, February for the quantification of the level of contamination by this analyte. For the respective investigation, 63 samples of aqueous matrices were taken from the Piloto River canton Santa Rosa province of El Oro whose study lasted three months, three samples were taken per month at the different points and it was carried out in the early hours of the morning. Sampling points were as follows: La Chonta (6H00 am), Guayabo Alto (6H20 am), El Guayabo (6H45 am), La Aurelia (7H30 am), El Vado (8H00 am) Limón Playa (8H30 am), Las Colinas (9:00 am) in which the following results could be verified: In all the samples analyzed at the different points, the Arsenic concentrations exceeded the permissible limit (0.05 mg / L) by the Ecuadorian Standard of Environmental Quality and discharge of Effluents: Water Resource Book VI Annex I.