Cd2+和Cr6+对马氏珠母贝的急性毒性效应  

Acute toxicity effect of heavy metals Cd2+ and Cr6+ on pearl oyster Pinctada martensii

作　　者：杨艳[1,2] 黎广钊[1,2] 何斌源 

机构地区：[1]广西红树林研究中心,北海536000 [2]广西大学林学院,南宁530005

出　　处：《广西水产科技》2010年第2期24-27,共4页Fisheries Science & Technology of Guangxi

基　　金：广西科技厅科技计划项目-桂科攻0718003-1-7

摘　　要：通过采用7个不同浓度梯度的镉和六价铬离子分别对马氏珠母贝进行急性毒性实验,得出马氏珠母贝对Cd2＋和Cr6＋在48h和96h的半致死浓度LC50,其中Cd2＋为5.10mg/L和3.01mg/L,Cr6＋为38.19mg/L和9.85mg/L;计算出Cd2＋和Cr6＋对马氏珠母贝的安全质量浓度分别为0.030mg/L和0.985mg/L。Cd2＋属于马氏珠母贝的剧毒重金属而Cr6＋属于中毒重金属。Seven treatments with different concentrations of Cd2 ＋ and Cr6 ＋ respectively were settled to test the acute toxicity effect on the pearl oyster Pinctada mactensii. The result show that median lethal concentrations （ LC50 ） of Cd2＋ at 48h and 96h were 5.10 mg/L and 3.01mg/L respectively, and those of Cr6＋ were 38. 19 mg/L and 9. 85 mg/L respectively. To this pearl oyster species, Cd2＋ has heavier toxicity than Cr6＋ .

关 键 词：镉 六价铬 急性毒性 马氏珠母贝 

分 类 号：S968.326.9[农业科学—水产养殖]