Determinación de plomo, mercurio, arsénico y cadmio en sedimentos de la laguna "El Canclón" de La Reserva Ecológica Manglares Churute, Guayas.
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2023
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Facultad de Ciencias Naturales. Universidad de Guayaquil
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Los humedales ofrecen funciones fundamentales para preservar el equilibrio de los ecosistemas, al mismo tiempo tienen la capacidad potencial de acumular altas concentraciones de contaminantes. Por lo cual, se evaluaron las concentraciones de plomo, mercurio, arsénico y cadmio en sedimentos en la Laguna "El Canclón," ubicada en la Reserva Ecológica Manglares Churute, durante el mes de junio de 2023, en 3 estaciones: La Garganta, Centro y La Prístina, utilizando un diseño no experimental observacional. Entre los resultados más relevantes en relación con el cadmio (Cd), arsénico (As), plomo (Pb) y mercurio (Hg) en sedimento, se adquirieron las mayores concentraciones en la estación Pristina (0.34 ± 0.02; 3.81 ± 0.53; 9.12 ± 1,96; 0,11 ± 0,01 mg/kg). Al comparar los límites máximos permisibles del marco legal aplicable (AM097A), se determinó que el Hg en la estación La Prístina no cumple con la normativa ecuatoriana. Asimismo, se analizaron diversas variables fisicoquímicas en la Laguna "El Canclón": la temperatura ambiente promedio fue de 29.40°C a 29.90°C, mientras que la temperatura del agua osciló entre 27.93°C y 29.40°C, y la temperatura del sedimento roto 27°C a 27,63°C. La humedad ambiente se situó entre 0,67% y 0,71%, mientras que el pH en agua fue de 6,57 a 8,03 y el pH en sedimento de 5,51 a 7,15.
Wetlands offer fundamental functions to preserve the balance of ecosystems, at the same time they have the potential to accumulate high concentrations of contaminants. Therefore, the concentrations of lead, mercury, arsenic, and cadmium in sediments were evaluated in the Laguna "El Canclón," located in the Manglares Churute Ecological Reserve, during the month of June 2023, in 3 stations: La Garganta, Centro and La Pristina, using a non-experimental observational design. Among the most relevant results in relation to cadmium (Cd), arsenic (As), lead (Pb) and mercury (Hg) in sediment, the highest concentrations were acquired at the Pristina station (0.34 ± 0.02; 3.81 ± 0.53; 9.12 ± 1.96; 0.11 ± 0.01 mg/kg). When comparing the maximum permissible limits of the applicable legal framework (AM097A), it was determined that Hg at the La Pristina station does not comply with Ecuadorian regulations. The average ambient temperature ranged from 29.40°C to 29.90°C, while the water temperature ranged from 27.93°C to 29.40°C, and the sediment temperature ranged from 27°C to 27.63°C. The ambient humidity ranged from 0.5°C to 0.5°C, and the sediment temperature ranged from 0.5°C to 0.5°C. Ambient humidity ranged from 0.67% to 0.71%, while pH in water ranged from 6.57 to 8.03 and pH in sediment from 5.51 to 7.15.
Wetlands offer fundamental functions to preserve the balance of ecosystems, at the same time they have the potential to accumulate high concentrations of contaminants. Therefore, the concentrations of lead, mercury, arsenic, and cadmium in sediments were evaluated in the Laguna "El Canclón," located in the Manglares Churute Ecological Reserve, during the month of June 2023, in 3 stations: La Garganta, Centro and La Pristina, using a non-experimental observational design. Among the most relevant results in relation to cadmium (Cd), arsenic (As), lead (Pb) and mercury (Hg) in sediment, the highest concentrations were acquired at the Pristina station (0.34 ± 0.02; 3.81 ± 0.53; 9.12 ± 1.96; 0.11 ± 0.01 mg/kg). When comparing the maximum permissible limits of the applicable legal framework (AM097A), it was determined that Hg at the La Pristina station does not comply with Ecuadorian regulations. The average ambient temperature ranged from 29.40°C to 29.90°C, while the water temperature ranged from 27.93°C to 29.40°C, and the sediment temperature ranged from 27°C to 27.63°C. The ambient humidity ranged from 0.5°C to 0.5°C, and the sediment temperature ranged from 0.5°C to 0.5°C. Ambient humidity ranged from 0.67% to 0.71%, while pH in water ranged from 6.57 to 8.03 and pH in sediment from 5.51 to 7.15.
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CADMIO, ARSÉNICO, PLOMO, MERCURIO, TEMPERATURA AMBIENTE, OXÍGENO DISUELTO, HUMEDAD RELATIVA, SEDIMENTOS, LAGUNA “EL CANCLÓN”.