纳米复合材料对拟除虫菊酯类与有机磷类药物的磁固相萃取  

A technique of magnetic solid-phase extraction with nanocomposites for detection of pyrethroid and organophosphorus

作　　者：王为中 王向阳 孙小涵 娄大雷 

机构地区：[1]徐州市白蚁防治所,江苏徐州221000

出　　处：《中华卫生杀虫药械》2016年第5期453-455,460,共4页Chinese Journal of Hygienic Insecticides and Equipments

基　　金：江苏省第四期"333工程"科研项目(编号:BRA2015062)

摘　　要：目的测定环境水体中防治白蚁药物联苯菊酯、毒死蜱以及溴氰菊酯残留量。方法碳包覆四氧化三铁磁性纳米材料的磁固相萃取技术,通过对材料用量、吸附时间、洗脱溶剂种类以及材料使用重复性等实验条件进行优化,并在优化的实验条件下采用外标法定量分析。结果 3种药物的线性相关系数为0.999 20.999 4（n=5）,检出限0.20.4 g/L。采用此方法对徐州市区云龙湖水、实验室自来水中的联苯菊酯、毒死蜱以及溴氰菊酯进行检测,添加回收率为83.0%106.3%,相对标准偏差（RSD）为2.0%9.5%,检出浓度符合国家标准。结论 Fe3O4/C纳米复合粒子与高效液相色谱联用,方法回收率和重现性均好,简便、快速,准确。Objective To determine the residues of termiticides such as bifenthrin,chlorpyrifos and deltamethrin in environmental water body. Methods By themagnetic solid-phase extraction with carbon coated Fe3O4 nanoparticles analysis technique through quantitative analysis with external standard method optimizing some key experimental parameters including amount of Fe3O4/ C nanoparticles,adsorption time,elution solvent and magnetic material reusability. Results The linear correlation coefficients were 0. 999 2- 0. 999 4（ n = 5） and the detection limits were 0. 2- 0. 4 g / L for these three termiticides,and their detected concentrations of residues in Xuzhou Yunlong Lake water and laboratory tap water were in line with national standards by test with this method. Conclusion The high performance liquid chromatography combined with Fe3O4/ C nanoparticles for detecting bifenthrin,chlorpyrifos and deltamethrin residues in water body showed good recovery and reproducibility,and the method is rapid,convenient and accurate.

关 键 词：磁固相萃取 碳包覆四氧化三铁磁性纳米粒子 白蚁防治剂 联苯菊酯 溴氰菊酯 毒死蜱 

分 类 号：S482.3[农业科学—农药学]