Total mercury and methylmercury concentrations in fish from the Mojana region of Colombia. Marrugo-Negrete, J., Olivero, J., Ae, V., Lans, E., Ae, C., & Norberto Benitez, L. 2007. abstract bibtex Total mercury (T-Hg) and methylmercury (MeHg) concentrations have been measured in the muscle tissue of 16 fish species consumed in the Mojana region of Colombia. T-Hg analysis was performed by cold-vapor atomic-absorption spectros-copy (CV-ASS) and MeHg analysis by gas chroma-tography with electron-capture detection. Higher T-Hg and MeHg concentrations were detected in carnivorous species (T-Hg = 0.371 ± 0.172 (mg g À1 fresh wt, MeHg = 0.346 ± 0.171 mg g À1 fresh wt) than in non-carnivorous fish (T-Hg = 0.155 ± 0.108 mg g À1 fresh wt, MeHg = 0.146 ± 0.102 mg g À1 fresh wt). In the different species mercury was present almost completely as the methylated form, with percentages between 80.5 and 98.1% (mean 92.0 ± 3.4%). In 13.5% of fish-tissue samples T-Hg concentrations exceeded the maximum level recommended by the World Health Organization for human consumption (Hg = 0.5 mg g À1 fresh wt). Although mean T-Hg concentrations in all fish samples (0.269 ± 0.181 mg g À1 fresh wt) did not exceed this limit, risk assessment suggested that the consumption of 0.12 kg fish day À1 could increase the risk of mercury poisoning of the inhabitants of this region.
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title = {Total mercury and methylmercury concentrations in fish from the Mojana region of Colombia},
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abstract = {Total mercury (T-Hg) and methylmercury (MeHg) concentrations have been measured in the muscle tissue of 16 fish species consumed in the Mojana region of Colombia. T-Hg analysis was performed by cold-vapor atomic-absorption spectros-copy (CV-ASS) and MeHg analysis by gas chroma-tography with electron-capture detection. Higher T-Hg and MeHg concentrations were detected in carnivorous species (T-Hg = 0.371 ± 0.172 (mg g À1 fresh wt, MeHg = 0.346 ± 0.171 mg g À1 fresh wt) than in non-carnivorous fish (T-Hg = 0.155 ± 0.108 mg g À1 fresh wt, MeHg = 0.146 ± 0.102 mg g À1 fresh wt). In the different species mercury was present almost completely as the methylated form, with percentages between 80.5 and 98.1% (mean 92.0 ± 3.4%). In 13.5% of fish-tissue samples T-Hg concentrations exceeded the maximum level recommended by the World Health Organization for human consumption (Hg = 0.5 mg g À1 fresh wt). Although mean T-Hg concentrations in all fish samples (0.269 ± 0.181 mg g À1 fresh wt) did not exceed this limit, risk assessment suggested that the consumption of 0.12 kg fish day À1 could increase the risk of mercury poisoning of the inhabitants of this region.},
bibtype = {article},
author = {Marrugo-Negrete, José and Olivero, Jesus and Ae, Verbel and Lans, Edineldo and Ae, Ceballos and Norberto Benitez, Luis}
}
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