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Evaluación de la concentración de cromo en sedimento del sector norte del Estero Salado de Guayaquil

Abstract:

An evaluation is presented on the concentration of heavy metals such as hexavalent chromium and total chromium in the northern sector of the Estero Salado de Guayaquil whose area is populated, with the presence of homes, schools, markets and industries, lack of sewerage and height of the inhabitants of the sector, affecting the estuary and causing pollution. The concentrations of total and hexavalent (toxic) chromium in sediment were evaluated during the rainy season (March and April 2019) of the Estero Salado de Guayaquil. The results were contrasted with the environmental regulations in force for soil in Ecuador and for sediments in Canada, evidencing that hexavalent chromium concentrations were within the Maximum Permissible Limits (LMP) corresponding to 0.4mg / Kg established in the Ecuadorian environmental standard. With respect to total Chromium, its concentrations were minimal both in March with an average of 29,180mg / Kg and April 17,501mg / kg in the monitored stations, without exceeding the MPL in both the national and international standards used. This study can provide baseline values on which the environmental impact of such activities in the region can be assessed.