摘要
建立了表面分子印迹-固相荧光法测定农药西维因(Carbaryl)。以甲基丙烯酸(MAA)为功能单体,乙二醇二甲基丙烯酸(EGDMA)为交联剂,乙腈为致孔剂,2,2’-偶氮二异丁腈(AIBN)为引发剂,硅胶为载体,制备出一种以西维因为模板分子的表面分子印迹聚合物(Carbaryl-SMIPs)。将该聚合物的粉末包埋在凝胶中,通过对凝胶基底的优化,得到了具有特异性识别功能的固相荧光材料(Carbaryl-SMIPs-PVA),应用于对西维因的检测。结果表明,在凝胶基底制备过程中当聚乙烯醇(PVA)溶液的质量分数为6%,Carbaryl-SMIPs的添加量为5 mg/6 mL PVA时,Carbaryl-SMIPs-PVA具有良好的吸附性能,实现了对果蔬表面西维因的快速检测。
A surface molecular imprinting-solid phase fluorescence method was established for the determination of Carbaryl pesticide.A surface molecularly imprinted polymer was prepared using methacrylic acid(MAA)as the functional monomer,ethylene glycol dimethacrylic acid(EGDMA)as the cross-linking agent,acetonitrile as the porogen,2,2'-azodiisobutyronitrile(AIBN)as the initiator,and silica gel as the carrier.The powder of the polymer was embedded in the gel.By optimizing the gel base,the solid-phase fluorescent material(Carbaryl-SMIPs-PVA)with specific recognition function was obtained.Therefore,a new method of surface molecularly imprinted-solid phase fluorescence which could be used to rapidly detect carbaryl was established.The results showed that when the mass fraction of PVA solution was 6%and the additive amount of Carbaryl-SMIPs was 5 mg/6 mL(PVA)during the preparation of gel base,Carbaryl-SMIPs-PVA gel base exhibited good adsorption performance and achieved the rapid detection of carbaryl on fruits and vegetables.
作者
刘玥
郑英蝶
王东梅
张志鹏
龚正君
LIU Yue;ZHENG Yingdie;WANG Dongmei;ZHANG Zhipeng;GONG Zhengjun(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756;Chengdu Center of Hydrogeology and Engineering Geology,Sichuan Bureau of Geology and Mineral Exploration and Development,Chengdu 610081)
出处
《分析试验室》
CAS
CSCD
北大核心
2020年第3期278-282,共5页
Chinese Journal of Analysis Laboratory
基金
国家自然基金(21777131)
四川省科技基金(2018GZ0400)项目资助。
关键词
西维因
表面分子印迹聚合物
固相荧光
凝胶基底
carbaryl
surface molecularly imprinted polymer
solid phase fluorescence
gel base
