铜、铅、镉单一及复合污染对牙鲆组织CAT酶活性影响

EFFECT,PB,CD SINGEL AND COMBINED POLLUTION ON CAT ENZYME OF PARALICHTHYS OLIVACEUS

本文主要研究了重金属对牙鲆肌肉、内脏团两种组织过氧化氢酶(CAT)的影响规律。分别研究了铜、铅、镉等单一金属暴露和混合金属暴露对才鲆过氧化氢(CAT)的影响规律:以及在海水中各种重金属浓度一定的前提下,TOC的浓度变化对牙鲆组织过氧化氢酶(CAT)的影响规律。结果表明:在7天的暴露实验中,海水中Cu、Cd、Pb不断被牙鲆蓄积,在牙鲆组织中蓄积的顺序为:内脏团)肌肉。重金属在牙鲆组织中的蓄积对酶活性影响显著。牙鲆组织CAT(抗氧化活性系统酶)对水环境中的重金属反映敏感,CAT酶对混合重金属的早期污染只有指示监测作用,能灵敏指示重金属污染的优选组织是内脏团。

The effect Of heavy metals in two tissues of viscera group ,muscle of Paralichhhys olivaceus to catalase（CAT） were studied. Copper,lead, cadmium single metal expose and mixture metals expose to Paralichthys olivaceus, and concentration of TOC effect to CAT base On the premise that three heavy metals are certain concentration in seawater. Tile result shows：Cu, Cd, Pb was gradually accumulated in the fish tissues On 7 days expose experiment,and the accumulation order of the three metals intile fish tissues was visceragroup 〉 gill 〉 muscle. Cu, Cd, Pb accumulation in organizes had significant effect to the catalase （CAT）in mixing exposed experiment. CAT enzyme can be monitoring the pollution Of mixture heavy metals. Viscera group is the delicating tissue to indicate pollution Of mixture heavy metals.