Volume 24 Issue 6
Dec.  2011
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Alireza POURKHABBAZ, Tahereh KHAZAEI, Samira BEHRAVESH, Mohammad EBRAHIMPOUR, Hamidreza POURKHABBAZ. Effect of Water Hardness on the Toxicity of Cobalt and Nickel to a Freshwater Fish, Capoeta fusca[J]. Biomedical and Environmental Sciences, 2011, 24(6): 656-660. doi: 10.3967/0895-3988.2011.06.010
Citation: Alireza POURKHABBAZ, Tahereh KHAZAEI, Samira BEHRAVESH, Mohammad EBRAHIMPOUR, Hamidreza POURKHABBAZ. Effect of Water Hardness on the Toxicity of Cobalt and Nickel to a Freshwater Fish, Capoeta fusca[J]. Biomedical and Environmental Sciences, 2011, 24(6): 656-660. doi: 10.3967/0895-3988.2011.06.010

Effect of Water Hardness on the Toxicity of Cobalt and Nickel to a Freshwater Fish, Capoeta fusca

doi: 10.3967/0895-3988.2011.06.010
Funds:  the University of Birjand,Iran
  • Objective To determine the effects of water hardness on the toxicities of cobalt (Co) and nickel (Ni) to a freshwater fish,Capoeta fusca.Methods Toxicity was investigated by static bioassay.Fish were exposed to cobalt (as CoCl2) and nickel (as NiCl2) for 96 h in waters with two levels of hardness (“hard” and “very hard”,nominally 130 mg/L and 350 mg/L as CaCO3,respectively).Results Water hardness had a significant effect on the acute toxicity of both elements.The 96 h LC50 values for Co were 91.7 mg/L and 204.8 mg/L in hard and very hard waters,respectively,and for Ni the 96 h LC50 values were 78.0 mg/L and 127.2 mg/L,respectively.Conclusion The fish were more sensitive to Co and Ni toxicity in hard water than in very hard water;very hard water protects C.fusca against the toxicity of Co and Ni.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Effect of Water Hardness on the Toxicity of Cobalt and Nickel to a Freshwater Fish, Capoeta fusca

doi: 10.3967/0895-3988.2011.06.010
Funds:  the University of Birjand,Iran

Abstract: Objective To determine the effects of water hardness on the toxicities of cobalt (Co) and nickel (Ni) to a freshwater fish,Capoeta fusca.Methods Toxicity was investigated by static bioassay.Fish were exposed to cobalt (as CoCl2) and nickel (as NiCl2) for 96 h in waters with two levels of hardness (“hard” and “very hard”,nominally 130 mg/L and 350 mg/L as CaCO3,respectively).Results Water hardness had a significant effect on the acute toxicity of both elements.The 96 h LC50 values for Co were 91.7 mg/L and 204.8 mg/L in hard and very hard waters,respectively,and for Ni the 96 h LC50 values were 78.0 mg/L and 127.2 mg/L,respectively.Conclusion The fish were more sensitive to Co and Ni toxicity in hard water than in very hard water;very hard water protects C.fusca against the toxicity of Co and Ni.

Alireza POURKHABBAZ, Tahereh KHAZAEI, Samira BEHRAVESH, Mohammad EBRAHIMPOUR, Hamidreza POURKHABBAZ. Effect of Water Hardness on the Toxicity of Cobalt and Nickel to a Freshwater Fish, Capoeta fusca[J]. Biomedical and Environmental Sciences, 2011, 24(6): 656-660. doi: 10.3967/0895-3988.2011.06.010
Citation: Alireza POURKHABBAZ, Tahereh KHAZAEI, Samira BEHRAVESH, Mohammad EBRAHIMPOUR, Hamidreza POURKHABBAZ. Effect of Water Hardness on the Toxicity of Cobalt and Nickel to a Freshwater Fish, Capoeta fusca[J]. Biomedical and Environmental Sciences, 2011, 24(6): 656-660. doi: 10.3967/0895-3988.2011.06.010

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