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环境化学  2015 

纳米金颗粒进入梨形四膜虫体内的方式及其分布

Keywords: 纳米金颗粒,梨形四膜虫,透射电镜,能谱

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Abstract:

以梨形四膜虫为模式动物,研究水体中的纳米金颗粒进入生物体的方式、分布及其生物学效应.实验中所采用的纳米金颗粒平均粒径为13nm,分散均匀.透射电镜结果表明,纳米金颗粒可以通过口沟(进食)和细胞膜(内吞)两种方式进入梨形四膜虫体内;纳米金颗粒进入梨形四膜虫体内后,主要分布在食物泡中,另外细胞质和细胞核(大核)中也含有少量的纳米金颗粒.同时,研究表明在实验所用的浓度范围内,纳米金颗粒对梨形四膜虫无明显毒性.

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