消毒副产物二氯乙酰胺的去除特性及对斑马鱼的毒性  

Removal property and toxicity research on zebrafish of the disinfection-byproduct—dichloroacetamide

作　　者：曹文平[1] 赵鑫[2] 王国祥[3] 汪银梅[1] 

机构地区：[1]东华理工大学水资源与环境工程学院,江西南昌330013 [2]河海大学环境学院,江苏南京210000 [3]南京师范大学环境学院,江苏南京210023

出　　处：《中国环境科学》2017年第3期1073-1081,共9页China Environmental Science

基　　金：江苏省自然科学基金(BK2011201);住房与城乡建设部科技计划项目(2012-K7-14);科学技术部星火计划项目;江苏省六大高峰人才项目(JNHB-005)

摘　　要：针对含氮消毒副产物二氯乙酰胺在水厂中的去除情况及对斑马鱼的发育毒性及生物累积毒性进行研究.研究发现,骆马湖水源地水厂的出厂水中二氯乙酰胺浓度最高为1.72μg/L,远低于微山湖的2.6μg/L.相比常规处理工艺,深度处理工艺中的臭氧活性炭工艺对二氯乙酰胺生成势的去除率高达64%,去除效果较好.二氯乙酰胺在10μg/L浓度下对斑马鱼胚胎产生明显致畸作用,并且对胚胎中枢神经毒性作用早于对胚胎体内循环作用.二氯乙酰胺易于在斑马鱼的肝脏发生累积作用,并且累积作用大小与脂质含量成正相关,应当被严格控制.Dichloroacetamide is anitrous disinfection-byproduct in drinking water treatment plant, which is harmful to human health. In this work, zebrafish was used as the target organim to explore effect of dichloroacetamide on zebrafish in developmental and accumulative toxicity. Experimental results document that the highest dichloroacetamide concentration in effluent from drinking water treatment plant of Luoma Lake was 1.72μg/L, which is far lower than that from in Weishan Lake with 2.6μg/L. Comparing conventional treatment process suggests that advanced unit of ozone combined with granular-activated carbon achieved higher efficiency for dichloroacetamide removal ratio, which reached at about 64%. Dichloroacetamide could cause malformation effects on embryo zebrafish and could cause stronger toxicity effects on neuron than that on circulation system of embryo zebrafish. Dichloroacetamide also could cause accumulative toxicity on zebrafish liver and its accumulative toxicity was proportional to lipid content, which should be strictly controlled.

关 键 词：二氯乙酰胺 去除特性 发育毒性 生物累积毒性 

分 类 号：X171.5[环境科学与工程—环境科学] X503.225