DDBAC与取代芳烃对发光菌联合毒性作用  

Joint toxicity of DDBAC and substituted aromatic compounds to Photobacterium phosphoreum

作　　者：董玉瑛[1] 王壮[2] 马静[1] 刘建华[1] 

机构地区：[1]大连民族学院环境工程系,辽宁大连116605 [2]大连理工大学环境与生命学院工业生态与环境工程教育部重点实验室,辽宁大连116024

出　　处：《化工学报》2008年第9期2351-2355,共5页CIESC Journal

基　　金：人事部留学人员科技活动择优项目(2007235);工业生态与环境工程教育部重点实验室开放基金项目(0605)~~

摘　　要：The mass production and wide usage of surfactants and aromatic compounds disturb seriously the natural ecosystem of physical,chemical and biological processes.The study on the mechanisms of joint toxicity can indicate the characterization of real environmental behavior and assessment of joint ecological effect.The toxicity to Photobacterium phosphoreum of different mixture systems of cationic surfactant of dodecyl dimethyl benzyl ammonium chloride (DDBAC) and three substituted aromatic compounds according to equi-concentration ratio of 1∶1,as well as individual toxicity,were determined respectively.They were evaluated by toxicity unit (TU),additive index (AI),similarity parameter (λ),and mixtures toxicity index (MTI).Four evaluating methods were compared and the modes of joint action of different systems were analyzed.It was shown that coherent results were obtained by four different evaluating methods in most situations.Conclusions can be drawn that the joint effects of different mixture systems were synergistic.Mechanisms of joint toxicity action could be discussed according to luminescence principle of Photobacterium phosphoreum and molecule structures of the mixture components.The mass production and wide usage of surfactants and aromatic compounds disturb seriously the natural ecosystem of physical, chemical and biological processes. The study on the mechanisms of joint toxicity can indicate the characterization of real environmental behavior and assessment of joint ecological effect. The toxicity to Photobacterium phosphoreum of different mixture systems of cationic surfactant of dodecyl dimethyl benzyl ammonium chloride （DDBAC） and three substituted aromatic compounds according to equi-concentration ratio of 1：1, as well as individual toxicity, were determined respectively. They were evaluated by toxicity unit （TU）, additive index （AI）, similarity parameter （λ）, and mixtures toxicity index （MTI） . Four evaluating methods were compared and the modes of joint action of different systems were analyzed. It was shown that coherent results were obtained by four different evaluating methods in most situations. Conclusions can be drawn that the joint effects of different mixture systems were synergistic. Mechanisms of joint toxicity action could be discussed according to luminescence principle of Photobacterium phosphoreum and molecule structures of the mixture components.

关 键 词：DDBAC 取代芳烃 发光菌 联合毒性 

分 类 号：X503.2[环境科学与工程—环境工程]