Abstract
An analytical procedure for the determination of Hg in otter (Lontra longicaudis) feces was developed, to separate fish scales for the identification of the animal diet. Samples were washed with ultra-pure water and the suspension was sampled and transferred for digestion. The solubilization was performed with nitric-perchloric acid mixture, and detection carried out by the atomic fluorescence spectrometry (AFS). The quality of the analytical procedure was assessed by analyzing in-house standard solutions and certified reference materials. Total Hg concentrations were in the range of 7.6-156 ng g{sup -1} (July 2004), 25.6-277 ng g{sup -1} (January 2005) and 14.6-744 ng g{sup -1} (May 2005) that is approximately the same order of magnitude for all samples collected in two reservoirs at the Tiete River, Brazil. Although Hg concentrations varied with sampling periods and diet, high levels were correlated to the percentage of carnivorous fish scales present in the otter feces. - The importance of otter feces preparation for Hg analysis, focusing the food web.
Ferreira Josef, Carla , E-mail: carlajosef@hotmail.com;
[1]
Ramos Adriano, Leonardo;
Franca, Elvis Joacir de;
Gustinelli Arantes de Carvalho, Gabriel;
[1]
Ferreira, Jose Roberto;
[1]
Polo de Pesquisa e Desenvolvimento Regional do Centro Sul - APTA, Agencia Paulista de Tecnologia dos Agronegocios. Rua Alberto Coral 1500, 13400-000 Piracicaba, Sao Paulo (Brazil)]
- Centro de Energia Nuclear na Agricultura - CENA-USP, Universidade de Sao Paulo, Av. Centenario 303, 13400-970 Piracicaba, Sao Paulo (Brazil)
Citation Formats
Ferreira Josef, Carla , E-mail: carlajosef@hotmail.com, Ramos Adriano, Leonardo, Franca, Elvis Joacir de, Gustinelli Arantes de Carvalho, Gabriel, Ferreira, Jose Roberto, and Polo de Pesquisa e Desenvolvimento Regional do Centro Sul - APTA, Agencia Paulista de Tecnologia dos Agronegocios. Rua Alberto Coral 1500, 13400-000 Piracicaba, Sao Paulo (Brazil)].
Determination of Hg and diet identification in otter (Lontra longicaudis) feces.
United Kingdom: N. p.,
2008.
Web.
doi:10.1016/j.envpol.2007.06.065.
Ferreira Josef, Carla , E-mail: carlajosef@hotmail.com, Ramos Adriano, Leonardo, Franca, Elvis Joacir de, Gustinelli Arantes de Carvalho, Gabriel, Ferreira, Jose Roberto, & Polo de Pesquisa e Desenvolvimento Regional do Centro Sul - APTA, Agencia Paulista de Tecnologia dos Agronegocios. Rua Alberto Coral 1500, 13400-000 Piracicaba, Sao Paulo (Brazil)].
Determination of Hg and diet identification in otter (Lontra longicaudis) feces.
United Kingdom.
https://doi.org/10.1016/j.envpol.2007.06.065
Ferreira Josef, Carla , E-mail: carlajosef@hotmail.com, Ramos Adriano, Leonardo, Franca, Elvis Joacir de, Gustinelli Arantes de Carvalho, Gabriel, Ferreira, Jose Roberto, and Polo de Pesquisa e Desenvolvimento Regional do Centro Sul - APTA, Agencia Paulista de Tecnologia dos Agronegocios. Rua Alberto Coral 1500, 13400-000 Piracicaba, Sao Paulo (Brazil)].
2008.
"Determination of Hg and diet identification in otter (Lontra longicaudis) feces."
United Kingdom.
https://doi.org/10.1016/j.envpol.2007.06.065.
@misc{etde_21129633,
title = {Determination of Hg and diet identification in otter (Lontra longicaudis) feces}
author = {Ferreira Josef, Carla , E-mail: carlajosef@hotmail.com, Ramos Adriano, Leonardo, Franca, Elvis Joacir de, Gustinelli Arantes de Carvalho, Gabriel, Ferreira, Jose Roberto, and Polo de Pesquisa e Desenvolvimento Regional do Centro Sul - APTA, Agencia Paulista de Tecnologia dos Agronegocios. Rua Alberto Coral 1500, 13400-000 Piracicaba, Sao Paulo (Brazil)]}
abstractNote = {An analytical procedure for the determination of Hg in otter (Lontra longicaudis) feces was developed, to separate fish scales for the identification of the animal diet. Samples were washed with ultra-pure water and the suspension was sampled and transferred for digestion. The solubilization was performed with nitric-perchloric acid mixture, and detection carried out by the atomic fluorescence spectrometry (AFS). The quality of the analytical procedure was assessed by analyzing in-house standard solutions and certified reference materials. Total Hg concentrations were in the range of 7.6-156 ng g{sup -1} (July 2004), 25.6-277 ng g{sup -1} (January 2005) and 14.6-744 ng g{sup -1} (May 2005) that is approximately the same order of magnitude for all samples collected in two reservoirs at the Tiete River, Brazil. Although Hg concentrations varied with sampling periods and diet, high levels were correlated to the percentage of carnivorous fish scales present in the otter feces. - The importance of otter feces preparation for Hg analysis, focusing the food web.}
doi = {10.1016/j.envpol.2007.06.065}
journal = []
issue = {3}
volume = {152}
place = {United Kingdom}
year = {2008}
month = {Apr}
}
title = {Determination of Hg and diet identification in otter (Lontra longicaudis) feces}
author = {Ferreira Josef, Carla , E-mail: carlajosef@hotmail.com, Ramos Adriano, Leonardo, Franca, Elvis Joacir de, Gustinelli Arantes de Carvalho, Gabriel, Ferreira, Jose Roberto, and Polo de Pesquisa e Desenvolvimento Regional do Centro Sul - APTA, Agencia Paulista de Tecnologia dos Agronegocios. Rua Alberto Coral 1500, 13400-000 Piracicaba, Sao Paulo (Brazil)]}
abstractNote = {An analytical procedure for the determination of Hg in otter (Lontra longicaudis) feces was developed, to separate fish scales for the identification of the animal diet. Samples were washed with ultra-pure water and the suspension was sampled and transferred for digestion. The solubilization was performed with nitric-perchloric acid mixture, and detection carried out by the atomic fluorescence spectrometry (AFS). The quality of the analytical procedure was assessed by analyzing in-house standard solutions and certified reference materials. Total Hg concentrations were in the range of 7.6-156 ng g{sup -1} (July 2004), 25.6-277 ng g{sup -1} (January 2005) and 14.6-744 ng g{sup -1} (May 2005) that is approximately the same order of magnitude for all samples collected in two reservoirs at the Tiete River, Brazil. Although Hg concentrations varied with sampling periods and diet, high levels were correlated to the percentage of carnivorous fish scales present in the otter feces. - The importance of otter feces preparation for Hg analysis, focusing the food web.}
doi = {10.1016/j.envpol.2007.06.065}
journal = []
issue = {3}
volume = {152}
place = {United Kingdom}
year = {2008}
month = {Apr}
}