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Toxicity and stability of sodium cyanide in fresh water fish Nile tilapia

机译：淡水鱼尼罗罗非鱼中氰化钠的毒性和稳定性

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An experimental study was conducted to evaluate the effect of 0.129 NaCN mg/l for 28 days on the behavior of tilapia and the activities of adenosine triphosphatases enzyme (Na + /K + , Ca 2+ and Mg 2+ -ATPase) within gill filaments, liver and muscles. Also, to evaluate the stability of cyanide in stored, frozen fish tissues. The present results showed that the exposed fish had shown different modes of behaviors. During the first 14 days, the fish lost its equilibrium with excessive mucous secretion on its gill filaments and skin. On the other hand, tilapia showed a normal swimming behavior with no excessive mucus secretion at 21st and 28th days. In addition, the present result showed that the NaCN decreased the activities of ATPase within the investigated tissues during the exposure periods except for the 1st day. Furthermore, the present result showed that the mean concentration of cyanide gradually decreased within the frozen tissues and completely disappeared after 48h within frozen liver and muscle. But, it disappeared after 72h within frozen blood and gills.
机译：进行了一项实验研究，以评估0.129 NaCN mg / l持续28天对within鱼细丝内and鱼行为和Na丝中腺苷三磷酸酶（Na + / K +，Ca 2+和Mg 2+ -ATPase）活性的影响，肝脏和肌肉。同样，以评估氰化物在储存的冷冻鱼组织中的稳定性。目前的结果表明，裸露的鱼表现出不同的行为方式。在开始的14天内，鱼的g丝和皮肤上的粘液分泌过多，从而失去了平衡。另一方面，罗非鱼在第21天和第28天表现出正常的游泳行为，没有过多的粘液分泌。此外，目前的结果表明，除了第一天，在暴露期间，NaCN降低了研究组织内ATPase的活性。此外，目前的结果表明，在冰冻的组织中，氰化物的平均浓度逐渐降低，在冰冻的肝脏和肌肉中48h后，氰化物的平均浓度完全消失。但是，它在冰冻的血液和g中72小时后消失了。

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