【摘要】 在体内实验条件下,测定了鲤鱼肝脏过氧化氢酶的活性.实验结果表明,过氧化氢酶的紫外分光光度法是可靠的.活性抑制结果表明,对-二硝基苯（p-DNB）对鲤鱼肝脏过氧化氢酶均有明显的抑制作用,EC₅₀值为0.0807mg·1^-1.鲤鱼肝脏过氧化氢酶可作为一项指标用于生态毒理学研究.更多还原

【Abstract】 Liver catalase (Ct) activities of carp were measured by ultraviolet spectropho-tometry and the results were reliable. The effect of p-DNB on Ct of carp liver were studied in Vivo. The results showed that p-DNB exhibited fairly strong inhibition to Ct of carp livers. A satisfactory straight line was obtained by plotting the probits of inhibition percentage of Ct against the logarithmic concentration of toxicants, The concentration causing 50% inhibtion of p-DNB to Ct carp liver was 0. 087mg·I-1. It was proposed that the effect of toxicant on Ct could be used as an index of ecotoxicolgical assessment.更多还原