四氯乙烯和镉对草鱼的单一与联合毒性效应

应用生态学报

四氯乙烯和镉对草鱼的单一与联合毒性效应

王桂燕^1,2,3;周启星^2,4;胡筱敏¹;华涛⁴;李锋⁵

¹东北大学资源与土木工程学院，沈阳 110004；²中国科学院沈阳应用生态研究所陆地生态过程重点实验室，沈阳 110016；³沈阳药科大学制药工程学院，沈阳 110016；⁴南开大学环境科学与工程学院，天津 300071；⁵东北大学理学院，沈阳 110004

收稿日期:2006-09-19 修回日期:1900-01-01 出版日期:2007-05-15 发布日期:2007-05-15

Single and joint toxicity of perchloroethylene and cadmium on Ctenopharyngodon idellus.

WANG Gui-yan^1,2,3; ZHOU Qi-xing^2,4; HU Xiao-min¹; HUA Tao⁴; LI Feng⁵

¹School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China;²Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;³Department of Pharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China;⁴College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China；⁵School of Sciences, Northeastern University, Shenyang 110004, China

Received:2006-09-19 Revised:1900-01-01 Online:2007-05-15 Published:2007-05-15

摘要/Abstract

摘要： 以静水生物测试法研究了四氯乙烯和重金属镉对草鱼的单一与联合毒性,同时采用Marking相加指数法对二者的联合毒性进行了评价.单一毒性试验表明:四氯乙烯对草鱼24、48、72和96 h的半数致死浓度(LC₅₀)分别为49.12、41.68、36.37和34.30 mg·L^-1;镉对草鱼24、48、72和96h的LC₅₀分别为45.58、34.81、28.63和24.05mg·L^-1;二者对草鱼均有毒性,而且为高毒,镉的毒性大于四氯乙烯.联合毒性试验表明:二者毒性比为1∶1,暴露时间为24、48、72和96 h时四氯乙烯和镉的LC₅₀分别为24.63、12.54、9.88和7.08 mg·L^-1以及17.11、8.71、6.87和4.92 mg·L^-1,相加指数AI(additive index)分别为0.14、0.81、0.95和1.43,联合作用结果为协同效应,并且随着时间的增加,协同作用增强;二者浓度比为1∶1, 暴露时间为24、48 、72和96 h时四氯乙烯和镉的LC₅₀分别为17.00、11.18、10.61和9.19 mg·L^-1,AI分别为0.39、0.70、0.51和0.54,联合作用为协同作用.

关键词: 糖代谢, 运输, 脱落酸, ¹³C光合产物, 苹果

Abstract: In this paper, the single and joint toxicity of perchloroethylene (PCE) and cadmium (Cd) on grass carp (Ctenopharyngodon idellus) was observed by static test method, and the joint toxicity was evaluated by additive index method. The results showed that the LC₅₀ of PCE and Cd in 24, 48, 72 and 96 h was 49.12, 41.68, 36.37 and 34.30 mg·L^-1, and 45.58, 34.81, 28.63 and 24.05mg·L^-1, respectively. Both the two test chemicals had high toxicity on C. idellus, and Cd had higher single toxicity than PCE. When the toxicity ratio was 1∶1 and exposure time was 24, 48, 72 and 96 h, the LC₅₀ of PCE and Cd was 24.63, 12.54, 9.88 and 7.08 mg·L^-1, and 17.11, 8.71, 6.87, 4.92 mg·L^-1, and the additive index (AI) was 0.14, 0.81, 0.95 and 1.43, respectively, indicating that the joint toxicity of PCE and Cd was synergistic, and increased with time. At the concentration ratio of 1∶1, the LC₅₀ of PCE and Cd in 24, 48, 72 and 96 h was 17.00, 11.81, 10.61 and 9.19 mg·L^-1, and 17.00, 11.81, 10.61 and 9.19 mg·L^-1, and the AI was 0.39, 0.70, 0.51 and 0.54, respectively, and the joint toxicity was also synergistic.

Key words: ABA, apple, sugar metabolism, transportation., ¹³C-photosynthate

王桂燕^1,2,3;周启星^2,4;胡筱敏¹;华涛⁴;李锋⁵. 四氯乙烯和镉对草鱼的单一与联合毒性效应[J]. 应用生态学报.

WANG Gui-yan^1,2,3; ZHOU Qi-xing^2,4; HU Xiao-min¹; HUA Tao⁴; LI Feng⁵ . Single and joint toxicity of perchloroethylene and cadmium on Ctenopharyngodon idellus.[J]. Chinese Journal of Applied Ecology.

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