两种典型持久性有机污染物对草履虫急性毒性初探(英文)Initial Study on Acute Toxicity of Two Typical Persistent Organic Pollutants(POPs) against Paramecium caudatum
周海龙;李国锋;黄仁良;崔嵩;刁晓平;
摘要(Abstract)：
滴滴涕和苯并芘这两种典型持久性有机污染物在环境中已广泛分布,因此,本研究利用单细胞真核模式生物-草履虫来研究其急性毒性效应,结果发现其毒性效应存在显著的剂量效应关系。DDT和BaP的半数致死浓度分别为126.012mg.L-1和180.167mg.L-1,且这两种污染物的浓度和概率间存在很好的线性关系。不同浓度的DDT和BaP对草履虫进行毒性作用时,草履虫呈现出不同的形态;比较而言,DDT的毒性作用更大。由于草履虫对这两种毒性物质作用的敏感性,因此,草履虫可作为一种敏感指示生物来评估POPs的长期危害。本研究为水污染的减排和生境的保护提供了一种新途径。最后,就这两种典型POPs对草履虫的毒性机理进行了讨论。
关键词(KeyWords)： 草履虫;滴滴涕;苯并芘;半数致死浓度;毒性机理
基金项目(Foundation): The Natural Science Foundation of Hainan Province(309010);; the Science and Research Programme of Education Department of Hainan Province(Hj2009-21);; Program of Key Science and Technology in Haikou City(2009-47)
作者(Author): 周海龙;李国锋;黄仁良;崔嵩;刁晓平;
Email:
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