Determinación de metales pesados Cd, Hg, Pb, en concha negra (anadara tuberculosa) del Manglar el Salto-Esmeraldas y comparación para exportación al mercado europeo
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2017
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Universidad de Guayaquil. Facultad de Ciencias Químicas
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El presente proyecto se encuentra enfocado en la determinación de metales pesados Cd, Hg y Pb, en concha negra (Anadara tuberculosa) del Manglar el Salto, en la parroquia San Antonio de la Provincia de Esmeraldas y comprobación para la exportación al mercado europeo, donde se pudo verificar el nivel de contaminación existente de las mismas. En este sector, se ha notado el alto nivel de contaminación debido a la presencia de metales pesados, que han causado un grave impacto en el entorno, pues no son biodegradables, y mantiene una gran bioacumulación en los organismos vivos. En el trabajo, se analizó específicamente la presencia de metales pesados como cadmio, mercurio y plomo, a través de la técnica de espectrofotometría de absorción atómica, en el molusco concha negra (Anadara tuberculosa) de la localidad del Manglar el Salto. Los resultados promedio obtenidos respecto a Hg fueron (12.5 ug/Kg), los resultados de Pb en todos los casos no fueron detectables (<20.0 ug/Kg), en el caso de Cd los resultados promedio fueron (32.30 ug/Kg). En base a estos resultados, se pudo detectar presencia de mercurio y cadmio, aunque en concentraciones bajas con respecto a los límites permitidos internacionales lo que permitiría la exportación del molusco al mercado europeo.
The present project is focused on the determination of heavy metals Cd, Hg and Pb, in the black shell (Anadara tuberculosa) of Manglar el Salto, in the San Antonio parish of the Province of Esmeraldas and verification for export to the European market, where it was possible to verify the level of contamination existing therein. In this sector, the high level of pollution due to the presence of heavy metals has been noted, which has caused a serious impact on the environment, since they are not biodegradable, and maintain a high bioaccumulation in living organisms. In the work, the presence of heavy metals such as cadmium, mercury and lead, through the atomic absorption spectrophotometry technique, was analyzed in black mollusc (Anadara tuberculosa) from the locality of Manglar el Salto. The average results obtained for Hg were (12.5 ug / kg), the results of Pb in all cases were not detectable (<20.0 ug / kg), in the case of Cd the average results were (32.30 ug / kg). Based on these results, it was possible to detect the presence of mercury and cadmium, although in low concentrations with respect to the international allowed limits that would allow the export of the mollusk to the European market.
The present project is focused on the determination of heavy metals Cd, Hg and Pb, in the black shell (Anadara tuberculosa) of Manglar el Salto, in the San Antonio parish of the Province of Esmeraldas and verification for export to the European market, where it was possible to verify the level of contamination existing therein. In this sector, the high level of pollution due to the presence of heavy metals has been noted, which has caused a serious impact on the environment, since they are not biodegradable, and maintain a high bioaccumulation in living organisms. In the work, the presence of heavy metals such as cadmium, mercury and lead, through the atomic absorption spectrophotometry technique, was analyzed in black mollusc (Anadara tuberculosa) from the locality of Manglar el Salto. The average results obtained for Hg were (12.5 ug / kg), the results of Pb in all cases were not detectable (<20.0 ug / kg), in the case of Cd the average results were (32.30 ug / kg). Based on these results, it was possible to detect the presence of mercury and cadmium, although in low concentrations with respect to the international allowed limits that would allow the export of the mollusk to the European market.
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INOCUIDAD ALIMENTARIA, METALES PESADOS, CONCHA NEGRA, ESPECTROFOTOMETRÍA DE ABSORCIÓN ATÓMICA