砷与氟对隆线溞的急性毒性及安全浓度分析  

Acute Toxicity and Safe Concentration of Arsenic and Fluoride to Daphnia carinata

作　　者：黄波平[1] 吴永贵[1] 申万暾[1] 陈程[1] 廖芬[1] 王良韬[1] 刘声[1] 

机构地区：[1]贵州大学资源与环境工程学院,贵州贵阳550003

出　　处：《贵州农业科学》2011年第3期106-110,共5页Guizhou Agricultural Sciences

基　　金：国家自然科学基金项目"高氟高砷煤矿区水环境复合污染生态毒性效应及其机理研究"(20977020);贵州省社会发展攻关项目"贵阳市两湖一库底质污染治理技术研究"[黔科合SY字(2008)3034];贵州大学211重点学科建设项目"矿山环境污染效应评价"[贵大211(2009)012]

摘　　要：为评价砷与氟对水生生物的生态毒性效应,参照国际标准化组织(ISO)标准测试方法,以隆线溞(Daphniacarinata)为试验生物,分别研究了砷与氟单独及共存时的急性毒性效应。结果表明,在污染物单独存在时,砷对隆线溞24 h、48 h、72 h、96 h LC50分别为3.50 mg/L、3.16 mg/L、2.22 mg/L、1.43 mg/L,氟对隆线溞24 h、48 h、72 h、96 h的LC50分别为253.94 mg/L、144.42 mg/L、96.12 mg/L、70.68 mg/L;计算出砷与氟对隆线溞安全质量浓度分别为0.01 mg/L、0.71 mg/L,所得安全浓度远低于我国部分水域砷与氟浓度值;砷与氟以毒性1∶1混合共存时,24 h、48 h、72 h和96 h对隆线溞的联合毒性效应均表现为拮抗作用;与大型溞(Daphnia magna)相比,隆线溞对砷和氟毒性较敏感,是较理想的环境污染监测生物。Daphnia carinata was tested under As and F stress to study the biological toxicity effect of As and F on aquatic organism according to ISO standard measuring method.The results showed that the LC50 value of As to Daphnia carinata after 24 h,48 h,72 h and 96 h was 3.50 mg/L,3.16 mg/L,2.22 mg/L and 1.43 mg/L separately,the LC50 value of F to Daphnia carinata after 24 h,48 h,72 h and 96 h was 253.94 mg/L,144.42 mg/L,96.12 mg/L and 70.68 mg/L respectively.The safe concentration of As and F to Daphnia carinata was 0.01 mg/L and 0.71 mg/L,which is obviously lower than As and F concentration of part water areas in China.The joint toxicity of As and F to Daphnia carinata after 24 h,48 h,72 h and 96 h all presented antagonism.Daphnia carinata is more sensitivity to As and F toxicity compared with Daphnia magna,which indicates that Daphnia carinata is an ideal organism for monitoring environmental pollution.

关 键 词：砷 氟 隆线溞 LC50 安全浓度 联合毒性 

分 类 号：X591[环境科学与工程—环境工程]