硝基苯对黑龙江林蛙蝌蚪生长发育的毒性效应

采用标准水生生物毒性测定的方法探讨了硝基苯对黑龙江林蛙(Rana amurensis)蝌蚪生长发育的毒性效应。结果表明：24、48、72 h蝌蚪的死亡率与浓度对数的回归方程分别为y=0.232x+1.523、y=0.246x+1.786、y=0.414x+1.889，证明黑龙江林蛙蝌蚪的死亡率与一定范围的硝基苯浓度呈线性正相关；24、48、72 h半致死浓度(LC50)分别为75.84、58.60、31.62 uL?L-1，安全浓度(SC)为13.63 uL?L-1；在安全浓度下，硝基苯对黑龙江林蛙蝌蚪的头长、体长和体重等方面具有一定的抑制作用，并可导致蝌蚪出现畸形。

Toxicity Effects of Nitrobenzene on Tadpoles Rana amurensis Growth and Development

A standard method was used to evaluate the toxicity effects of Nitrobenzene on tadpoles Rana amurensis growth and development in this study. The results showed that the regression equations between the individuals＇ death probability and the logarithm of Nitrobenzene concentration for 24, 48 and 72 h were y= 0.232x＋ 1.523, y=0.246x＋ 1.786, y=0.414x＋ 1.889, suggesting that the death probability of tadpoles R. amurensis individuals had a positive linear correlation with definite range of Nitrobenzene concentration. The 50% lethal concentration （LC50）were 75.84, 58.60 and 31.62 μl/L respectively and the safe concentration （SC） was 13.63 μl/L. Under the SC, the growth and development of tadpole R. amurensis on the head length, body length and body weight could be still delayed and disturbed, also resulted in the malformation of tadpoles R. amurensis.