镉对长江华溪蟹的急性毒性与积累  

The Acute Toxcity and Accumulated of Cd^(2+) in freshwater Crab Sinopotamon yangtsekiense

作　　者：王茜[1] 王兰[1] 席玉英[2] 杨秀清[3] 王定星[1] 

机构地区：[1]山西大学生命科学与技术学院,山西太原030006 [2]山西大学环境与资源学院,山西太原030006 [3]中国科学院微生物研究所,北京100080

出　　处：《山西大学学报（自然科学版）》2003年第2期176-178,共3页Journal of Shanxi University(Natural Science Edition)

基　　金：国家自然科学基金 ( 3 0 0 70 0 92 );山西省自然科学基金 ( 2 0 0 10 83 )

摘　　要：于 2 0 0 1年 5月～ 6月 ,对长江华溪蟹 ( Sinopotamon yangtsekiense)以体外暴露的方式给镉 .实验设对照组和4个处理组 ,分别在体外暴露镉 2 4h、48h和 72 h后活体解剖雌蟹 ,取主要组织器官 (外壳、鳃、肝胰脏、触角腺、卵巢 )进行酸消化并测镉的含量 .结果表明 :镉对蟹体主要组织器官的生物积累具有选择性 ,积累量由高到低的顺序依次为 :外壳 >鳃 >肝胰脏 >触角腺 >卵巢 .镉对蟹体的毒性作用具有浓度——效应关系 ,即随着镉浓度的升高 ,组织器官中镉的生物积累也随之增加 ;但镉对蟹体毒性作用的时间——效应关系不明显 。In this experiment,Sinopotamon yangtsekiense was exposed to the Cd 2+solution from April to May,2001.The crabs were divided into four treated groups and the control.The crabs were exposed to the Cd 2+ solution for 24 h,48 h and 72 h,then were dissected lively.Many organs including the gill,the antennal,the hepatopancreas,the ovary and the crust were nitrificated,and the containing of its Cd 2+was determined by spectrophotometry.The results showed that Cd 2+was accumulated selectively in S.yangtsekiense.The bioaccumulation of each organ decreased in turn:the crust>the gill>the hepatopancreas>the antennal gland>the ovary.Among of them,the bioaccumulation of crust was 2～5 times that of gill or hepatopancreas in the same condition.The bioaccumulation of Cd 2+ in S.yangtsekiense had the concentration-effect relationship,i.e.,the more the concentration increased,the more the bioaccumulation was.But the time-effect relationship about the bioaccumulation of the S.yangtsekiensewere not obvious.The difference found because of the different organs.

关 键 词：镉 长江华溪蟹 急性毒性 生物积累 重金属污染 水环境污染 半致死浓度 

分 类 号：X520.322.5[环境科学与工程—环境工程]