本实验采用了Fe3O4纳米粒子修饰碳纳米管得到吸附性能较好的磁性纳米复合材料,利用气相色谱法测定菠菜中9种有机磷农药的含量,并比较了改性介孔碳、石墨烯、活性炭、碳纳米管、Fe3O4纳米粒子修饰碳纳米管复合材料和Fe3O4纳米粒子等不同吸附材料对菠菜中9种有机磷农药吸附能力.Fe3O4纳米粒子修饰碳纳米管磁性纳米复合材料通过透射电镜扫描进行表征,并探讨了Fe3O4纳米粒子修饰碳纳米管磁性纳米复合材料对菠菜中9种有机磷农药吸附稳定性和回收率.结果表明,改性碳纳米管对菠菜中9种有机磷农药的吸附能力最强,且稳定性良好和回收率较高,其回收率最大可以达到93.5%.%In this work, a novel magenatic nanocomposites which with good adsorption properties by Fe3O4 nanoparticle was prepared. The contents of 9 kinds of organophosphorus pesticides in spinach were determined by gas chromatography. The adsorption capacity of organophosphorus pesticides with different adsorbent materials such as modified mesoporous carbon, graphene, activated carbon, carbon nanotubes, Fe3O4nanoparticles modified car-bon nanotubes composites and Fe3O4nanoparticles were compared. This composite was characterized by transmis-sion electron microscopy, and the adsorption stability and recovery of organophosphorus pesticides in vegetables were investigated by Fe3O4nanoparticles modified carbon nanotubes composites. The results showed that the modi-fied carbon nanotubes had the strongest adsorption ability to the organophosphorus pesticides in spinach, and the stability is good and the recovery rate is higher, the recovery rate can reach 93.5%.
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