La reproducción total o parcial del contenido e imágenes de esta publicación se rige de acuerdo a... more La reproducción total o parcial del contenido e imágenes de esta publicación se rige de acuerdo a normas internacionales sobre protección a los derechos de autor, con criterio especificados en la licencia Creative Commons (CC BY-NC-SA 4.0) Determinación de arsénico y mercurio en agua superficial del lago de Atitlán Artículo Científico / Scientific Article
Ambiente e Agua - An Interdisciplinary Journal of Applied Science
Microplastics are plastic particles smaller than 5 mm found in the environment, which can cause h... more Microplastics are plastic particles smaller than 5 mm found in the environment, which can cause health problems for aquatic organisms and humans, being classified as emerging pollutants. In Guatemala, Lake Amatitlán is one of the most polluted lakes as it receives discharges of wastewater, treated and untreated, as well as other waste from Guatemala City and other major urban populations. In a recent study, microplastics were found in sediments in Lake Amatitlán, so it was necessary to determine whether the lake's fish are affected by these pollutants, which can be harmful to their health. This research aimed to determine the microplastics in fish from Lake Amatitlán, for which 65 specimens of Nile tilapia (Oreochromis niloticus) were collected in October and December 2020, and January 2021. The collected fish were dissected in the laboratory, where the number and type of microplastics were analyzed in the digestive tract, after their separation by digestion and filtration. Line...
El lago de Atitlan, considerado uno de los lagos mas bellos del mundo, tiene una superficie de 12... more El lago de Atitlan, considerado uno de los lagos mas bellos del mundo, tiene una superficie de 125.7 km 2 , una profundidad maxima de aproximadamente 350 m, y se encuentra en el departamento de Solola, en el occidente de Guatemala. Desde 2009 se han observado floraciones extensivas de cianobacterias en el lago, reflejando la contaminacion del agua en la cuenca. Se determinaron los niveles de arsenico (As) y mercurio (Hg) en agua superficial del lago de Atitlan, por espectrofotometria de absorcion atomica (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 cercania a poblaciones asentadas en la orillas del lago. Dos sitios corresponden a los principales rios 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 At...
Total and available toxic metals concentrations were determined sediments of Lake Izabal during 2... more Total and available toxic metals concentrations were determined sediments of Lake Izabal during 2004. Total lead was found in concentrations between 4.4 and 49.3 mg/Kg (dw). Pb-Zn carbonate-hosted deposits located 100 Km at west of the lake partially explains lead concentrations. Discharges from the polluted Polochic River could also be responsible for this contamination. Nickel mining during 1970s and 1980s is considered to be responsible of ecosystem contamination by toxic metals. El Estor, the nearest site to the mining facilities, showed the highest total and available mean concentrations for nickel (1648.2 mg/Kg and 1,114.6 mg/Kg) and for chromium (1923.8 mg/Kg and 205.6 mg/Kg). Levels of cadmium were found for the first time in Lake Izabal sediments (0.23-0.59 mg/Kg) which could indicate increasing anthropogenic contamination. The results are useful as baseline for Lake Izabal sediments, since new concessions of nickel extraction are operating again in the basin.
1 -r FACULTAD DE CIENCIAS QUIMICAS Y FARMACIA s~w m ESCUELA DE QUIMICA OrrrdrLYuarul m m de DEPAR... more 1 -r FACULTAD DE CIENCIAS QUIMICAS Y FARMACIA s~w m ESCUELA DE QUIMICA OrrrdrLYuarul m m de DEPARTAMENTO DE ANALISIS INORGANICO )~M y ' R a n r d i q k m r 1 m -m UNlDAD DE ANALISiS INSTRUMJZNTAL PROYECTO 83-00 DE LA LINEA FODECYT CALIDAD FTSICOQUIMICA DEL AGUA EN EL PARQm NACIONAL LAGIJNA DEL TIGRE, PET~N.
La reproducción total o parcial del contenido e imágenes de esta publicación se rige de acuerdo a... more La reproducción total o parcial del contenido e imágenes de esta publicación se rige de acuerdo a normas internacionales sobre protección a los derechos de autor, con criterio especificados en la licencia Creative Commons (CC BY-NC-SA 4.0) Determinación de arsénico y mercurio en agua superficial del lago de Atitlán Artículo Científico / Scientific Article
Ambiente e Agua - An Interdisciplinary Journal of Applied Science
Microplastics are plastic particles smaller than 5 mm found in the environment, which can cause h... more Microplastics are plastic particles smaller than 5 mm found in the environment, which can cause health problems for aquatic organisms and humans, being classified as emerging pollutants. In Guatemala, Lake Amatitlán is one of the most polluted lakes as it receives discharges of wastewater, treated and untreated, as well as other waste from Guatemala City and other major urban populations. In a recent study, microplastics were found in sediments in Lake Amatitlán, so it was necessary to determine whether the lake's fish are affected by these pollutants, which can be harmful to their health. This research aimed to determine the microplastics in fish from Lake Amatitlán, for which 65 specimens of Nile tilapia (Oreochromis niloticus) were collected in October and December 2020, and January 2021. The collected fish were dissected in the laboratory, where the number and type of microplastics were analyzed in the digestive tract, after their separation by digestion and filtration. Line...
El lago de Atitlan, considerado uno de los lagos mas bellos del mundo, tiene una superficie de 12... more El lago de Atitlan, considerado uno de los lagos mas bellos del mundo, tiene una superficie de 125.7 km 2 , una profundidad maxima de aproximadamente 350 m, y se encuentra en el departamento de Solola, en el occidente de Guatemala. Desde 2009 se han observado floraciones extensivas de cianobacterias en el lago, reflejando la contaminacion del agua en la cuenca. Se determinaron los niveles de arsenico (As) y mercurio (Hg) en agua superficial del lago de Atitlan, por espectrofotometria de absorcion atomica (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 cercania a poblaciones asentadas en la orillas del lago. Dos sitios corresponden a los principales rios 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 At...
Total and available toxic metals concentrations were determined sediments of Lake Izabal during 2... more Total and available toxic metals concentrations were determined sediments of Lake Izabal during 2004. Total lead was found in concentrations between 4.4 and 49.3 mg/Kg (dw). Pb-Zn carbonate-hosted deposits located 100 Km at west of the lake partially explains lead concentrations. Discharges from the polluted Polochic River could also be responsible for this contamination. Nickel mining during 1970s and 1980s is considered to be responsible of ecosystem contamination by toxic metals. El Estor, the nearest site to the mining facilities, showed the highest total and available mean concentrations for nickel (1648.2 mg/Kg and 1,114.6 mg/Kg) and for chromium (1923.8 mg/Kg and 205.6 mg/Kg). Levels of cadmium were found for the first time in Lake Izabal sediments (0.23-0.59 mg/Kg) which could indicate increasing anthropogenic contamination. The results are useful as baseline for Lake Izabal sediments, since new concessions of nickel extraction are operating again in the basin.
1 -r FACULTAD DE CIENCIAS QUIMICAS Y FARMACIA s~w m ESCUELA DE QUIMICA OrrrdrLYuarul m m de DEPAR... more 1 -r FACULTAD DE CIENCIAS QUIMICAS Y FARMACIA s~w m ESCUELA DE QUIMICA OrrrdrLYuarul m m de DEPARTAMENTO DE ANALISIS INORGANICO )~M y ' R a n r d i q k m r 1 m -m UNlDAD DE ANALISiS INSTRUMJZNTAL PROYECTO 83-00 DE LA LINEA FODECYT CALIDAD FTSICOQUIMICA DEL AGUA EN EL PARQm NACIONAL LAGIJNA DEL TIGRE, PET~N.
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