【摘要】 介绍了化学物质对发光细菌50%抑光率浓度的负对数log1/EC50,对鱼的半致死浓度的负对数log1/LC50及对大型水蚤50%活性抑制浓度的负对数log1/LC50分别与化学物质的分子连接性指数1χv及辛醇、水分配系数的相关关系,以及log1/EC50分别与鱼类的log1/LC50、大型水蚤的log1/LC50的相关关系。说明发光细菌适用于监控水质突发性污染。由于用于检测的冰冻干菌或液体干菌培养基的差异,以及悬浮菌液不易均匀一致,会影响检测的灵敏度及精密度。用D=X±3SD计算警戒值较好。在用日常监测的抑光率计算水质污染的警戒值时,要将正值时段与负值时段分开计算D=X±3SD,以确定警戒上限和警戒下限。更多还原

【Abstract】 In this paper,the log 1/EC50 for illuminescent bacteria,the log 1/LC50 for diphinia and the log 1/LC50 for fishes correlate respectively with molecular connectivity 1χv of organic chemicals and octanol:water partition coefficient Kow and log 1/LC50 for fishes and for diphinia correlate respectively with the log 1/EC50 were introduced.These indicate that incident monitoring of water pollution using illuminescent bacteria is applicable,economical and time saving.Sensitivity and precision of this method are influenced by differences in media composition using in the preparation of freeze-dried or liquid dried bacteria and bacteria added into the test tube are in suspended state.The warning limits of water pollution ought to be calculated as D=X±3SD.In calculating the upper and lower warning limits of water pollution D=X±3SD,it is necessary to calculate the light inhibitory effects in period of positive value and negative value separately.更多还原