Evaluación de trazas de mercurio en el tramo Caña Brava- Buenos Aires del Río Cotuhé, asociados a la actividad minera artesanal de oro en el Amazonas colombiano
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2016
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Universidad de La Salle. Facultad de Ingeniería. Ingeniería Ambiental y Sanitaria
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La presente investigación se realizó en el Río Cotuhé y el corregimiento de Tarapacá, en el Departamento del Amazonas durante el periodo comprendido entre diciembre de 2014 y julio de 2016; el propósito de la investigación consistió en el análisis de los niveles de mercurio determinados en el tramo Caña Brava- Buenos Aires del Río Cotuhé asociados a la actividad minera artesanal de oro aluvión que se presenta en el Río entre la comunidad Caña Brava y Buenos Aires. El presente estudio se justificó debido a que la actividad minera de oro de aluvión se lleva a cabo de forma artesanal hace aproximadamente 15 años, lo cual ha ocasionado impactos negativos tanto a la población como al ambiente, con la contaminación del recurso hídrico, disminución de peces, aparición de enfermedades y cambios en la dinámica social, entre otros, sin tener hasta el momento un control por parte de las autoridades ambientales y militares. Para ello se identificó el proceso minero artesanal de oro en la zona mediante evaluaciones diagnosticas e inmersión social, que permitió establecer criterios para el muestreo de agua. Esta evaluación se desarrolló mediante un muestreo puntual de agua teniendo en cuenta los parámetros de calidad para la obtención, preservación y transporte de las muestras hasta el laboratorio encargado de realizar el análisis de mercurio mediante la técnica de adsorción atómica por generador de hidruros. El análisis de datos permitió determinar que en la zona se encuentran valores de mercurio total entre
This research was conducted in the Cotuhé River and the village of Tarapaca in the Colombian Amazon during the period between December 2014 and July 2016; the purpose of the research was to analyze levels of mercury in a transept River Cotuhé associated with artisanal alluvial gold mining activity occurring in the river between Caña Brava and Buenos Aires community. This study was justified because mining gold alluvium is carried out by hand out by hand about 15 years ago, which has caused negative impacts both the population and the environment, pollution of water resources, decreased fish, onset of disease and changes in social dynamics, among others, so far without supervision by environmental and military authorities. For this, the artisanal gold mining process in the area is identified by diagnostic assessments and social immersion, which allowed to establish criteria for sampling water. This assessment was developed through a water sampling point that takes into account the quality parameters for procurement, preservation and transport of samples to the laboratory responsible for the analysis of mercury by atomic adsorption technique Hydride generation. Data analysis allowed us to determine that the concentration levels of mercury in the area is between
This research was conducted in the Cotuhé River and the village of Tarapaca in the Colombian Amazon during the period between December 2014 and July 2016; the purpose of the research was to analyze levels of mercury in a transept River Cotuhé associated with artisanal alluvial gold mining activity occurring in the river between Caña Brava and Buenos Aires community. This study was justified because mining gold alluvium is carried out by hand out by hand about 15 years ago, which has caused negative impacts both the population and the environment, pollution of water resources, decreased fish, onset of disease and changes in social dynamics, among others, so far without supervision by environmental and military authorities. For this, the artisanal gold mining process in the area is identified by diagnostic assessments and social immersion, which allowed to establish criteria for sampling water. This assessment was developed through a water sampling point that takes into account the quality parameters for procurement, preservation and transport of samples to the laboratory responsible for the analysis of mercury by atomic adsorption technique Hydride generation. Data analysis allowed us to determine that the concentration levels of mercury in the area is between
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Industria minera, Minería a tajo abierto - Aspectos ambientales, Protección del medio ambiente, Disposición de aguas residuales en ríos, lagos, etc, Mineral industries, Strip mining - Environment aspects, Environmental protection, Sewage disposal in rivers, lakes, etc