电镀废水的生物毒性效应监测与分析  

Monitoring and Analysis of the Bio-toxicity of Electroplating Wastewater

作　　者：邱瑞桥 朱大明 

机构地区：[1]广州市环境监测中心站,广州510030

出　　处：《广州环境科学》2012年第1期28-30,34,共4页Guangzhou Environmental Science

摘　　要：通过水质化学检测、鱼类急性毒性试验和蚕豆根尖微核试验对电镀污染源废水和污染鱼塘水的毒性进行监测。化学分析表明,污染源废水和鱼塘水中COD、镍、铜、氰化物等含量均显著超标;生物监测结果表明,污染源废水和鱼塘水的鱼类急性毒性(96hLC50)分别为1.74%和23.95%,微核率分别为26.4‰和12.8‰,以铜、镍、氰化物为主的电镀废水具有很强的鱼类急性毒性,对蚕豆根尖微核率的形成具有显著影响,致突变危害性较强。Fish died accident occurred in a fish pond in Guangzhou because of electroplating wastewater pollution. The bio-toxicity of the electroplating wastewater and the polluted fishpond water has been monitored by chemical detection of water quality, fish acute toxicity test with Brachydanio Rerio, and root tip micronucleus test with Vicia faba. The chemical analysis results show that, the concentrations of COD, nickel, copper, and cyanide in the waste water source and fish pond water were exceed the water quality standards＇ requirements. The bio-monitoring results show that, the 96 h LC 50 values of the electroplating waste water and the central pond water were 1.74%, 23.95%, respectively, while the micronucleus frequencies were 26.4‰, 12.8‰, respectively. The electroplating waste water containing copper, nickel, and cyanide has a strong fish acute toxicity and significantly effects on the micronucleus frequencies, and enhances the risk of induced mutation.

关 键 词：电镀废水 鱼类急性毒性 蚕豆根尖微核 死鱼事件 

分 类 号：X520.322.5[环境科学与工程—环境工程]