利用对斑马鱼的在线监测实现对水体重金属铬污染的预警

Early warning for Cr^(6+) in waterbody by using on-line monitoring of Danio rerio

以发光细菌和斑马鱼为试验对象,利用DeltaTox毒性检测仪和多物种净水监测仪(MFB)来监测水体中的重金属铬(Cr6+)。目的是通过与国际标准认证的方法—发光细菌方法(Del-taTox)进行比较,探讨使用MFB作为预警系统的可行性。结果表明:发光细菌发光强度有20%、50%变化时DeltaTox对Cr6+的检出限分别是35.2mg/L、60mg/L;斑马鱼行为强度有20%、50%变化时MFB对Cr6+的检出限分别是26.9mg/L、57.9mg/L。结果表明:MFB与DeltaTox对Cr6+监测的检出限很接近,使用MFB作为预警系统实现对重金属铬(Cr6+)的监测是可行的。

This study aimed at discussing the feasibility of using MFB as early warning system by comparing with the international standard method--photobacteria method （DeltaTox）. The experiment use I）eltaTox and MFB to measure the effects of Cr^6＋ on Vibrio Fischeri and Danio rerio. The result showed that the detection limits of DeltaTox to Cr^6＋ are 35.2 mg/L and 60 mg/L when the light intensity of Vibrio Fischeri has 20% and 50% change. While the detection limits of MFB to Cr^6＋ are 26.9 mg/ L and 57. 9 mg/L with the 20% and 50% change in the behavior intensity of Danio rerio, respectively. It is observed that the detection limits of MFB to Cr^6＋ is close to DeltaTox＇s, Therefore,it is a feasible method using MFB as early warning system for monitoring of Cr^6＋ in water.