工业废水的鱼类急性毒性效应研究

Study on acute-toxicity of six kind industrial wastewaters to zebrafish

利用斑马鱼对某市六家有代表性的企业所排放的处理前和处理后的工业废水进行了急性毒性试验,以对斑马鱼的半致死浓度为评价指标,得到了六种工业废水毒性强度的初步排序,并结合理化指标分析了斑马鱼的致死原因。实验表明,六家企业处理前工业废水的毒性大小顺序为:电子类>食品类>电镀类>电池类>玻璃类>橡胶类,96hLC50分别为:0.98%、4.73%、11.35%、13.60%、47.60%,其中橡胶类毒性最小,100%的工业废水对斑马鱼无致死效应。处理后的工业废水毒性基本消除,但部分行业的工业废水处理后仍存在毒性。

In this paper, acute-toxicity test using zebrafish was applied to monitoring the wastewater form six industries. Based on 96h LC50 values, the toxicity sequence of the six industrial effluents was in order of electron effluent〉 grocery effluents〉 electroplate effluent 〉battery effulent 〉glass effluent 〉 rubber effluent. The six 96hLC50 are as follows： 0.98%, 4.73%, 11.35%, 13.60%, 47.60%.The toxicity of the rubber effluent was the least, the 100% industrial wastewater can not be deadly to Brachydanio rerio fish. The toxicity was eliminated after management, but the toxicity of some industries were not eliminated.