環境水中のシアンと魚から検出されるシアンとの相互関係

Relationship between the Concentration of Cyanide Ion Detected in Carp and That in Environmental Water

Murachi Shiro

Nanba Kenji

Takeuchi Yukio

広島大学水畜産学部紀要

Journal of the Faculty of Fisheries and Animal Husbandry, Hiroshima University

The toxicity of cyanide solution to carp increased with a rise in temperature. The result that the concentration of cyanide ion in blood was higher than that in hepatopancreas and spleen，or digestive tract of carp exposed to 10 ppm cyanide ion solution for 5 hours suggested that the ambient cyanide might enter into the blood through the gill. However, the cyanide ion concentration in skin and muscle was higher than that in viscera of carp died in 10 ppm cyanide ion solution. It can therefore be concluded that a large amount of cyanide penetrated into the fish body surface.

Cyanide ion was detectable from carp washed by running tap water for 24 hours after death in 5 ppm cyanide ion solution ， and also from carp exposed to 10 ppm cyanide ion solution for 70 minutes after death of suffocation.

Fishing industry. Fisheries [ 660 ]

jpn

広島大学水畜産学部

[ISSN] 0440-8756

[NCID] AN00213563

[NAID] 40003288795