Evaluación de la calidad de agua del estero salado para fines recreativos mediante contacto secundario, entre los puentes Zigzag y 5 de Junio
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2017
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Facultad de Ciencias Naturales. Universidad de Guayaquil
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El trabajo consistió en realizar una evaluación de la calidad de agua del Estero Salado para fines recreativos mediante contacto secundario, entre los Puentes Zigzag y 5 de Junio. Los parámetros que se determinaron fueron: Parásitos Nemátodos Intestinales, Coliformes totales, Oxígeno disuelto, Potencial de Hidrógeno, Tensoactivos, Grasas y aceites, Materia flotante y la Relación Nitrógeno-Fósforo total en los dos monitoreos efectuados; el Monitoreo 1 se realizó en el mes de noviembre (estación seca) iniciando en pleamar y durante corriente de reflujo; y el Monitoreo 2 se realizó en el mes de marzo (estación lluviosa), iniciando en bajamar y durante corriente de flujo. Definiéndose tres estaciones de muestreo, un punto de muestreo por cada estación, y en cada punto se tomaron muestras por triplicado; determinándose dos parámetros in situ (pH y Oxígeno disuelto) los restantes se enviaron a analizar a laboratorios acreditados. Se encontró que el 50% de los parámetros analizados si cumplen con la normativa vigente (Potencial de Hidrógeno, Grasas y aceites, Materia flotante y Tensoactivos), el 37,5% no cumplen (Oxígeno disuelto, Coliformes totales y Relación Nitrógeno-Fósforo) y un 12,5% que su cumplimiento es parcial como es el caso de los Parásitos Nemátodos Intestinales. Por lo que se concluye que el área de estudio delimitada entre los dos puentes, no está apta para desarrollar actividades recreativas mediante contacto secundario (deportes náuticos) lo que amerita la aplicación de la propuesta de plan de acción planteado.
The work consisted of an evaluation of the water quality of the Estero Salado for recreational purposes through secondary contact, between the Zigzag and June 5 Bridges. The parameters that were determined were: Parasites Intestinal Nematodes, Total Coliforms, Dissolved Oxygen, Hydrogen Potential, Surfactants, Fats and oils, Floating matter and the Total Nitrogen-Phosphorus Ratio in the two monitoring performed; Monitoring 1 was carried out in November (dry season) starting at high tide and during reflux current; and Monitoring 2 was performed in the month of March (rainy season), starting at low tide and during stream flow. Three sampling stations were defined, one sampling point for each station, and at each point samples were taken in triplicate; two parameters were determined in situ (pH and Dissolved Oxygen) and the remaining samples were sent to an accredited laboratory. It was found that 50% of the analyzed parameters comply with current regulations (Potential of Hydrogen, Fats and oils, Floating matter and Surfactants), 37.5% do not comply (Dissolved Oxygen, Total Coliforms and Nitrogen-Phosphorus Ratio) and 12.5% that its compliance is partial as is the case of the intestinal nematode parasites. Therefore, it is concluded that the area of study delimited between the two bridges, is not suitable to develop recreational activities through secondary contact (water sports) which merits the application of the proposed action plan.
The work consisted of an evaluation of the water quality of the Estero Salado for recreational purposes through secondary contact, between the Zigzag and June 5 Bridges. The parameters that were determined were: Parasites Intestinal Nematodes, Total Coliforms, Dissolved Oxygen, Hydrogen Potential, Surfactants, Fats and oils, Floating matter and the Total Nitrogen-Phosphorus Ratio in the two monitoring performed; Monitoring 1 was carried out in November (dry season) starting at high tide and during reflux current; and Monitoring 2 was performed in the month of March (rainy season), starting at low tide and during stream flow. Three sampling stations were defined, one sampling point for each station, and at each point samples were taken in triplicate; two parameters were determined in situ (pH and Dissolved Oxygen) and the remaining samples were sent to an accredited laboratory. It was found that 50% of the analyzed parameters comply with current regulations (Potential of Hydrogen, Fats and oils, Floating matter and Surfactants), 37.5% do not comply (Dissolved Oxygen, Total Coliforms and Nitrogen-Phosphorus Ratio) and 12.5% that its compliance is partial as is the case of the intestinal nematode parasites. Therefore, it is concluded that the area of study delimited between the two bridges, is not suitable to develop recreational activities through secondary contact (water sports) which merits the application of the proposed action plan.
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COLIFORMES, CONTACTO SECUNDARIO, NEMÁTODOS