不同重金属污染物对两种发光菌的毒性测试研究  

Test and study of toxicity of two photogenic bacteria affected by different heavy metal contaminants

作　　者：陈洁[1] 袁琳[1] 叶丹[1] 胡文[2] 

机构地区：[1]长江流域水资源保护局长江流域水环境监测中心,湖北武汉430010 [2]武汉理工大学资源与环境工程学院,湖北武汉430070

出　　处：《人民长江》2014年第18期77-81,共5页Yangtze River

摘　　要：为了快速检测重金属污染物毒性对人体的危害,以及不同重金属毒性的大小,选用费氏弧菌和鳆鱼杆菌作为指示生物,通过实验室培养,对包括Hg、Pb、Cd、Mn、Cu、Cr和Zn在内的7种重金属污染物进行毒性测试,通过计算样品的发光抑制率来表征毒性大小。结果表明,重金属毒性物质对发光菌的发光均有抑制作用,并且随着毒性物质浓度的增加,发光菌的发光强度逐渐减小,其发光抑制率与所测试的毒性物质的毒性及浓度呈现正相关关系。In order to quickly test the toxicity of heavy metal and the harms on human being, the Vibrio Fischeri and Abalone coli were selected as indicator organism and incubated in laboratory, 7 heavy metals including Hg, Pb, Cd, Mn, Cu and Zn were tested for their toxicity and the luminescent inhibition rate of the photogenic bacterias representing the toxicity was calculated. The results show that the toxicity of heavy metal inhibits the luminescence yield of the photogenic bacteria. With the increase of con-centration toxic objectives, the luminous intensity decreases. The correlation of luminescent inhibition rate and toxicity of the test-ed sample and its concentration is positive.

关 键 词：毒性测试 发光菌 剂量-效应关系 重金属污染 

分 类 号：X52[环境科学与工程—环境工程]