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四氯乙烯和镉对草鱼的单一与联合毒性效应
引用本文:王桂燕,周启星,胡筱敏,华涛,李锋.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,2007,18(5):1120-1124.
作者姓名:王桂燕  周启星  胡筱敏  华涛  李锋
作者单位:1. 东北大学资源与土木工程学院,沈阳,110004;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;沈阳药科大学制药工程学院,沈阳,110016
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;南开大学环境科学与工程学院,天津,300071
3. 东北大学资源与土木工程学院,沈阳,110004
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
基金项目:国家自然科学基金;国家自然科学基金;国家重点基础研究发展计划(973计划)
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:四氯乙烯    草鱼  单一毒性  联合毒性  半数致死浓度(LC50)  协同作用
文章编号:1001-9332(2007)05-1120-05
收稿时间:2006-9-19
修稿时间:2006-09-192007-02-15

Single and joint toxicity of perchloroethylene and cadmium on Ctenopharyngodon idellus.
WANG Gui-yan,ZHOU Qi-xing,HU Xiao-min,HUA Tao,LI Feng.Single and joint toxicity of perchloroethylene and cadmium on Ctenopharyngodon idellus.[J].Chinese Journal of Applied Ecology,2007,18(5):1120-1124.
Authors:WANG Gui-yan  ZHOU Qi-xing  HU Xiao-min  HUA Tao  LI Feng
Institution:1.School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China; 2.Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; 3.Department of Pharmaceutics , Shenyang Pharmaceutical University, Shenyang 110016, China; 4.College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China; 5.School of Sciences, Northeastern University, Shenyang 110004, China
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 LCs0 of PCE and Cd in 24, 48, 72 and 96 h was 49.12, 41.68, 36.37 and 34.30 mg x L(-1), and 45.58, 34.81, 28.63 and 24.05 mg x 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 x L(-1), and 17.11, 8.71, 6.87, 4.92 mg x 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 x L(-1), and 17.00, 11.81, 10.61 and 9.19 mg x L(-1), and the AI was 0.39, 0.70, 0.51 and 0.54, respectively, and the joint toxicity was also synergistic.
Keywords:perchloroethylene  cadmium  Ctenopharyngodon idellus  single toxicity  joint toxicity  median lethal concentration  synergistic effect  
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