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ESTUDIO SOBRE LA CONTAMINACIÓN MERCURIAL EN LAS LOCALIDADES BOCHINCHE (ESTADO BOLÍVAR) Y LA PLANADA (ESTADO DELTA AMACURO) VENEZUELA

Published in 2013 by Luis A. Álvarez F., Luis A. Rojas
This paper was not found in any repository; the policy of its publisher is unknown or unclear.
This paper was not found in any repository; the policy of its publisher is unknown or unclear.

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Abstract

El uso de mercurio en la minería de oro de aluvión, en la Guayana venezolana, se ha incrementado en los últimos años al punto de representar un grave peligro para la salud, no sólo de las personas involucradas en el proceso de extracción y procesamiento del metal aurífero, sino en general, para todos aquellos que habitan en los pueblos mineros y áreas cercanas, debido a la forma como es manipulado el mercurio, elemento altamente tóxico. En el presente trabajo, realizado en zonas de la Reserva Forestal Imataca: La Planada y Bochinche, con demostrado uso de mercurio en las actividades mineras. Se tomáron muestras de suelo, sedimentos de quebradas y del agua. Éstas fueron sometidas a análisis mediante espectrometría de absorción atómica, arrojando como resultado altas concentraciones de mercurio en ambas localidades, que se acentúa en el caso de La Planada. Aunque dentro del rango informado por otros investigadores en áreas de Guayana y Brasi~ los resultados superan ampliamente los niveles base establecidos en las normas internacionales. PALABRAS CLAVES: mercurio, contaminación, Imataca ABSTRACT The use of mercury in mining of alluvium gold, in the Venezuelan Guayana, it has been increased in the last years to the point of representing a serious danger, not only for the health of people involved in the extraction process and prosecution ofthe auriferous metal, but in general, for all those that inhabit the mining towns and nearby areas, due to the way the mercury, a highly toxic element, is manipulated. This work was carried out in areas ofthe lmataca Forestal Reserve (La Planada and Bochinche) with demonstrated use of mercury in mining activities. Water, soil and sediment samples from creeks were analyzed by spectrometry of atomic absorption. High mercury concentrations were observed in both areas, although particularly accentuated in the case of La Planada. Even though the results were inside the range reported by other investigators in areas of Guayana and Brazil, they are remarkably higher than the basic levels established by the intemational norms. KEY WORDS: Mercury, Pollution, Imataca