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Ciencia, Tecnología y Salud
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Ciencia, Tecnología y Salud
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Determinación de arsénico y mercurio en agua superficial del lago de Atitlán

Authors: Juan Francisco Pérez Sabino; Balmore Valladares; Elisandra Hernández; Bessie Oliva; Marta Del Cid; Pedro Jayes Reyes;

Determinación de arsénico y mercurio en agua superficial del lago de Atitlán

Abstract

El lago de Atitlán, considerado uno de los lagos más bellos del mundo, tiene una superficie de 125.7 km2, una profundidad máxima de aproximadamente 350 m, y se encuentra en el departamento de Sololá, en el occidente de Guatemala. Desde 2009 se han observado floraciones extensivas de cianobacterias en el lago, reflejando la contaminación del agua en la cuenca. Se determinaron los niveles de arsénico (As) y mercurio (Hg) en agua superficial del lago de Atitlán, por espectrofotometrí­a de absorción atómica (EAA), en cuatro muestreos realizados en marzo, mayo, agosto y octubre de 2014 en 14 sitios. Diez sitios se encuentran localizados en el lago, habiendo sido definidos en estudios anteriores con base en su cercaní­a a poblaciones asentadas en la orillas del lago. Dos sitios corresponden a los principales rí­os tributarios, y los restantes dos sitios a la entrada y salida de la planta de tratamiento Los Cebollales, ubicada en Panajachel. Los niveles de As encontrados en el lago de Atitlán, tributarios y en la planta de tratamiento, fueron superiores a 20 μg/L. Los resultados indican que la contaminación del lago de Atitlán por As se debe principalmente a la geologí­a de la cuenca, al localizarse en una zona volcánica. Los niveles cuantificables de As, son superiores al nivel máximo permitido para agua potable en la Norma de Agua Potable (NGO 29001:99) de la Comisión Guatemalteca de Normas (COGUANOR), por lo que el agua del lago de Atitlán no se considera apta para el consumo humano.

Related Organizations
Keywords

Medicine (General), Q1-390, R5-920, Science (General), SF1-1100, Animal culture

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Average
Average
Average
gold