刘建梅;王蕾;刘济宁;石利利;陈英文;沈树宝;

• 1:南京工业大学生物与制药工程学院
• 2:环境保护部南京环境科学研究所

摘要(Abstract)：

为对比微宇宙方法和物种敏感度分布曲线法在铜离子生态危害评估中的差异,构建了包括浮游藻类、轮虫和大型溞的微宇宙系统,持续监测了铜离子浓度、物种丰度和系统理化性质的变化,推导出铜离子对微宇宙系统的63 d无显著效应浓度(63 d-NOEC);同时,将铜离子对鱼类、甲壳类、昆虫类、藻类及软体动物等对铜离子的长期毒性数据通过物种敏感度分布曲线法进行拟合,推导出对生态系统中95%物种无显著危害的作用浓度(HC5)。测试结果表明,大型溞种群在铜离子110.80μg·L-1作用下暂时消失,导致了系统中轮虫和藻类数量的增长,试验后期铜离子浓度降低,大型溞种群呈现恢复的趋势;在212.06及420.26μg·L-1铜离子作用下,藻类和轮虫的存活受到严重抑制,在试验后期也没有恢复。与物种敏感度分布曲线法推导得出的HC5值相比,通过微宇宙系统得出的NOEC值较高,这可能是微宇宙系统中铜离子生物可利用性在各相介质间的差异及种间反馈调节造成的。

关键词(KeyWords)： 铜离子;微宇宙;物种敏感度分布曲线;生态危害

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展计划(863计划)(No.2013AA06A308);; PBT/PvB分类技术体系及智能筛选平台开发(科研院所技术开发研究专项)

作者(Author): 刘建梅;王蕾;刘济宁;石利利;陈英文;沈树宝;

Email:

DOI:

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