Cu^(2+),Al^(3+)和Zn^(2+)对泥鳅的急性毒性和联合毒性研究  

Acute Toxicity and Joint Toxicity of Cu^(2+),Al^(3+) and Zn^(2+) to Loach

作　　者：朱旭[1,2] 陈雷[1] 陈玉明[2] 卢少勇[1,2] 

机构地区：[1]吉林建筑工程学院市政与环境工程系,吉林长春130118 [2]中国环境科学研究院,环境基准与风险评估国家重点实验室,国家环境保护湖泊污染控制重点实验室,湖泊环境研究中心,洞庭湖生态环境研究站,湖泊工程技术中心,北京100012

出　　处：《环境科学与技术》2014年第10期26-30,47,共6页Environmental Science & Technology

基　　金：国家水体污染控制与治理科技重大专项太湖富营养化控制与治理技术及工程示范项目(2008ZX07101);湖泊富营养化治理与控制技术及工程示范主题集成(2009ZX07106-005);洱海缓冲带生态构建工程方案(2012ZX07105-002-02);中央级公益性科研院所基本科研业务专项(2012-YSKY-14)

摘　　要：采用静水法,研究了Cu2+、Zn2+、Al3+对泥鳅(Misgurnua anguillicaudatus)的急性毒性;根据各种金属48和72 h LC50值,采用联合指数相加法,研究了这3种离子对泥鳅的联合毒性。结果表明,泥鳅暴露在金属离子溶液中24 h后,Zn2+和Al3+对泥鳅的LC50分别是1.497和3.276 mg/L;48、72和96 h后,Cu2+、Zn2+和Al3+对泥鳅的LC50分别为1.054、0.667和0.563 mg/L,1.425、1.387和1.350 mg/L,3.010、2.938和2.856 mg/L。Cu2+、Al3+、Zn2+对泥鳅的安全浓度分别是0.056、0.135和0.286 mg/L。3种金属离子对泥鳅毒性从高到低排序依次为Cu2+>Al3+>Zn2+。不同金属离子组合间,联合毒性效应有明显差异,泥鳅暴露于Cu2+-Al3+共存48和72 h的联合毒性皆为协同作用;而Al3+-Zn2+共存48和72 h的联合毒性皆为拮抗作用;Cu2+-Zn2+共存时,毒性作用较为复杂,48和72h时分别表现为拮抗和协同作用。Toxic effects of Cu^2＋, Zn^2＋ and Al^3＋ on loach （Misgurnua anguillicaudatus） were tested in laboratory by the static test, and based on acute toxic test the joint effect of Cu^2＋-Zn^2＋, Cu^2＋-Al^3＋ and Al^3＋-Zn^2＋ to loach was investigated using additive index method. Results showed that the 24 h-LC50 of Zn^2＋ and Al^3＋ was 1.497 and 3.276 mg/L respectively, and the 48 h-LC50）, 72 h-LC50 and 96 h-LC50 of Cu^2＋, Zn^2＋ and Al^3＋ was 1.054,0.667,0.563 mg/L, 1.425, 1.387, 1.350 mg/L and 3.010, 2.938,2.856 mg/L respectively. The safe concentrations of Cu^2＋, Zn^2＋ and Al^3＋. on loach were 0.056,0.135 and 0.286 mg/L respectively, with the toxicity followed the order of Cu^2＋ 〉Al^3＋ 〉Zn^2＋. The types of joint effects of Cu-AI and Zn-AI to loach were synergetic effect and antagonistic effect for 48 h and 72 h respectively, and that of Cu-Zn was antagonistic effect for 48 h, while synergetic effect for 72 h.

关 键 词：CU^2+ AL^3+ ZN^2+ 急性毒性 联合毒性 泥鳅 

分 类 号：X171.5[环境科学与工程—环境科学]