水質汚濁斃死魚の死因判定法について-VII

ニッケルによる斃死

抄録

In this study, an attempt was made to detect nickel in the bodies of fish killed by nickel solutions. Nickel content was determined by the Dimethylglyoxime method.
Nickel was clearly detected in the bodies of fish killed by NiSO₄ solution and by three kinds of nickel-plating solutions, moreover it was detected in the bodies of living fish in Ni solutions in these experiments. It was also possible to detect after washing with the running tap water for 24 hours after death. Nickel in normal fish was not detected with accuracy of this method.
According to these experiments, it was concluded that this method could be used for the post-mortem identification of the pollutant in the fish killed by nickel solutions.