赵娜;朱琳;冯鸣凤;

• 1:南开大学环境科学与工程学院污染过程与环境基准教育部重点实验室

摘要(Abstract)：

目前我国水质量生态基准的研究较为零星、分散.研究了不同pH条件下Cr6+对3种藻的毒性效应,以期为我国水生态基准的科学制定以及基准的相关研究工作提供参考.选取小球藻、斜生栅藻和铜绿微囊藻3种典型的藻种,在pH为7.0,8.0和9.0三个条件下,依据OECD-201藻类生长抑制实验指南,以72h藻生物量为测试终点,计算3种藻的比生长率,以及Cr6+对3种藻产生毒性效应的NOEC、LOEC、EC10和EC20值.结果表明,在本实验条件下,在不同pH条件下藻种生长不同,小球藻的最适pH值为7.0,斜生栅藻和铜绿微囊藻的最适pH值为9.0;在不同pH条件下,Cr6+对小球藻、斜生栅藻和铜绿微囊藻的毒性作用不同,Cr6+对小球藻在pH=7.0时毒性最小,对斜生栅藻和铜绿微囊藻在pH=9.0时的毒性最小.在藻最适生长的pH条件下,Cr6+的毒性可以达到最小程度;铜绿微囊藻对Cr6+比斜生栅藻和小球藻更加敏感.

关键词(KeyWords)： Cr6+;小球藻;斜生栅藻;铜绿微囊藻;NOEC;LOEC;EC10;EC20;水质量基准

Abstract:

Keywords:

基金项目(Foundation): 国家水体污染控制与治理科技重大专项(No.2008ZX08526-003)

作者(Author): 赵娜;朱琳;冯鸣凤;

Email:

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