Samples of Tilapia (Oreochromis niloticus) and African catfish (Clarias gariepinus) were collected from Hawassa and Ziway Lakes during March 1-20 of 2003 E.C. The moisture content of freeze-dried body of the fish collected from six sites ranged between 62.6% and 86.6% (m/m). An optimal procedure required 12 mL mixture of HNO3, HClO4, and H2O2 (3:2:1, respectively) to mineralize powdered samples in open refluxed digestion vessels: 0.5 g of the fish body. The concentrations of 3 toxic elements in the body of the fish determined by flame atomic absorption spectrophotometer varied, respectively, (mg of element/kg of fish); Cd = 0.4 - 1.85, Pb = 0.05 - 0.5 and Hg = 0.07 - 0.096. The concentration of those three heavy metals in water samples was also determined similarly by FAAS varied, respectively, as (mg of element/L of water sample); Cd = 0.06 - 0.66, Pb = 0.28 - 0.36 and Hg = 0.5 - 0.74. Application of the statistical t-test on heavy metal elements data has shown that there was a significant difference between the mean concentrations of Hg in water samples from the two Lakes. There is no significant difference between fish as well as water sample of the two lakes for the other metals.
Published in | Science Journal of Analytical Chemistry (Volume 3, Issue 1) |
DOI | 10.11648/j.sjac.20150301.13 |
Page(s) | 10-16 |
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2015. Published by Science Publishing Group |
Tilapia Fish, African Cat Fish, Clarias Gariepinus, Oreochromis Niloticus, Toxic Metals, Water Pollution, Lake Hawassa, Lake Ziway
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APA Style
Kiflom Gebremedhin, Tarekegn Berhanu. (2015). Determination of Some Selected Heavy Metals in Fish and Water Samples from Hawassa and Ziway Lakes. Science Journal of Analytical Chemistry, 3(1), 10-16. https://doi.org/10.11648/j.sjac.20150301.13
ACS Style
Kiflom Gebremedhin; Tarekegn Berhanu. Determination of Some Selected Heavy Metals in Fish and Water Samples from Hawassa and Ziway Lakes. Sci. J. Anal. Chem. 2015, 3(1), 10-16. doi: 10.11648/j.sjac.20150301.13
AMA Style
Kiflom Gebremedhin, Tarekegn Berhanu. Determination of Some Selected Heavy Metals in Fish and Water Samples from Hawassa and Ziway Lakes. Sci J Anal Chem. 2015;3(1):10-16. doi: 10.11648/j.sjac.20150301.13
@article{10.11648/j.sjac.20150301.13, author = {Kiflom Gebremedhin and Tarekegn Berhanu}, title = {Determination of Some Selected Heavy Metals in Fish and Water Samples from Hawassa and Ziway Lakes}, journal = {Science Journal of Analytical Chemistry}, volume = {3}, number = {1}, pages = {10-16}, doi = {10.11648/j.sjac.20150301.13}, url = {https://doi.org/10.11648/j.sjac.20150301.13}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sjac.20150301.13}, abstract = {Samples of Tilapia (Oreochromis niloticus) and African catfish (Clarias gariepinus) were collected from Hawassa and Ziway Lakes during March 1-20 of 2003 E.C. The moisture content of freeze-dried body of the fish collected from six sites ranged between 62.6% and 86.6% (m/m). An optimal procedure required 12 mL mixture of HNO3, HClO4, and H2O2 (3:2:1, respectively) to mineralize powdered samples in open refluxed digestion vessels: 0.5 g of the fish body. The concentrations of 3 toxic elements in the body of the fish determined by flame atomic absorption spectrophotometer varied, respectively, (mg of element/kg of fish); Cd = 0.4 - 1.85, Pb = 0.05 - 0.5 and Hg = 0.07 - 0.096. The concentration of those three heavy metals in water samples was also determined similarly by FAAS varied, respectively, as (mg of element/L of water sample); Cd = 0.06 - 0.66, Pb = 0.28 - 0.36 and Hg = 0.5 - 0.74. Application of the statistical t-test on heavy metal elements data has shown that there was a significant difference between the mean concentrations of Hg in water samples from the two Lakes. There is no significant difference between fish as well as water sample of the two lakes for the other metals.}, year = {2015} }
TY - JOUR T1 - Determination of Some Selected Heavy Metals in Fish and Water Samples from Hawassa and Ziway Lakes AU - Kiflom Gebremedhin AU - Tarekegn Berhanu Y1 - 2015/01/30 PY - 2015 N1 - https://doi.org/10.11648/j.sjac.20150301.13 DO - 10.11648/j.sjac.20150301.13 T2 - Science Journal of Analytical Chemistry JF - Science Journal of Analytical Chemistry JO - Science Journal of Analytical Chemistry SP - 10 EP - 16 PB - Science Publishing Group SN - 2376-8053 UR - https://doi.org/10.11648/j.sjac.20150301.13 AB - Samples of Tilapia (Oreochromis niloticus) and African catfish (Clarias gariepinus) were collected from Hawassa and Ziway Lakes during March 1-20 of 2003 E.C. The moisture content of freeze-dried body of the fish collected from six sites ranged between 62.6% and 86.6% (m/m). An optimal procedure required 12 mL mixture of HNO3, HClO4, and H2O2 (3:2:1, respectively) to mineralize powdered samples in open refluxed digestion vessels: 0.5 g of the fish body. The concentrations of 3 toxic elements in the body of the fish determined by flame atomic absorption spectrophotometer varied, respectively, (mg of element/kg of fish); Cd = 0.4 - 1.85, Pb = 0.05 - 0.5 and Hg = 0.07 - 0.096. The concentration of those three heavy metals in water samples was also determined similarly by FAAS varied, respectively, as (mg of element/L of water sample); Cd = 0.06 - 0.66, Pb = 0.28 - 0.36 and Hg = 0.5 - 0.74. Application of the statistical t-test on heavy metal elements data has shown that there was a significant difference between the mean concentrations of Hg in water samples from the two Lakes. There is no significant difference between fish as well as water sample of the two lakes for the other metals. VL - 3 IS - 1 ER -