辛元元;陈金媛;程艳红;赵美蓉;

• 1:浙江工业大学生物与环境工程学院

摘要(Abstract)：

为了更全面地评价纳米TiO2的生物效应,尤其是纳米TiO2与其他环境污染物的联合作用,以铜绿微囊藻为受试生物,探讨了不同浓度的纳米TiO2,以及纳米TiO2与Cd联合作用对藻生长的影响。根据叶绿素a及藻胆蛋白的含量变化,低浓度的纳米TiO2溶液(0～50mg.L-1)可以促进藻的生长,当纳米TiO2的浓度大于50mg·L-1时,藻细胞的生长有所抑制,生长减慢,并呈剂量-效应关系;当纳米TiO2与Cd离子同时存在时,由于纳米TiO2对Cd离子的吸附作用,水中游离态Cd离子浓度降低,Cd离子对藻的毒性明显降低。因此,纳米TiO2的生态毒性和环境效应不容忽视,同时,应重视纳米材料及与其他环境污染物质共同作用后的生物效应。

关键词(KeyWords)： 纳米TiO_2;铜绿微囊藻;重金属Cd;光合作用;生物效应

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(No.20877070,21177114)

作者(Author): 辛元元;陈金媛;程艳红;赵美蓉;

Email:

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