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Photoresponsive Surface Molecularly Imprinted Polymers for the Detection of Profenofos in Tomato and Mangosteen
Frontiers in Chemistry ( IF 3.8 ) Pub Date : 2020-08-31 , DOI: 10.3389/fchem.2020.583036
Mei-Jun Chen 1 , Hai-Lin Yang 1 , Ya-Min Si 1 , Qian Tang 1 , Cheuk-Fai Chow 2 , Cheng-Bin Gong 1
Affiliation  

As a moderately toxic organophosphorus pesticide, profenofos (PFF) is widely used in agricultural practice, resulting in the accumulation of a high amount of PFF in agricultural products and the environment. This will inevitably damage our health. Therefore, it is important to establish a convenient and sensitive method for the detection of PFF. This paper reports a photoresponsive surface-imprinted polymer based on poly(styrene-co-methyl acrylic acid) (PS-co-PMAA@PSMIPs) for the detection of PFF by using carboxyl-capped polystyrene microspheres (PS-co-PMAA), PFF, 4-((4-(methacryloyloxy)phenyl)diazenyl) benzoic acid, and triethanolamine trimethacrylate as the substrate, template, functional monomer, and cross-linker, respectively. PS-co-PMAA@PSMIP shows good photoresponsive properties in DMSO/H2O (3:1, v/v). Its photoisomerization rate constant exhibits a good linear relationship with PFF concentration in the range of 0~15 μmol/L. PS-co-PMAA@PSMIP was applied for the determination of PFF in spiked tomato and mangosteen with good recoveries ranging in 94.4–102.4%.



中文翻译:


用于检测番茄和山竹中丙溴磷的光响应表面分子印迹聚合物



丙溴磷(PFF)作为一种中等毒性的有机磷农药,在农业实践中广泛使用,导致农产品和环境中积累大量PFF。这将不可避免地损害我们的健康。因此,建立一种方便、灵敏的PFF检测方法具有重要意义。本文报道了一种基于聚苯乙烯的光响应表面印迹聚合物共-甲基丙烯酸)(PS-共-PMAA@PSMIPs)用于使用羧基封端的聚苯乙烯微球(PS-共-PMAA)、PFF、4-((4-(甲基丙烯酰氧基)苯基)二氮烯基)苯甲酸和三乙醇胺三甲基丙烯酸酯分别作为底物、模板、功能单体和交联剂。 PS-共-PMAA@PSMIP 在 DMSO/H 2 O (3:1, v/v) 中表现出良好的光响应性能。其光异构化速率常数在0~15 μmol/L范围内与PFF浓度呈现良好的线性关系。 PS-共-PMAA@PSMIP 用于测定加标番茄和山竹中的 PFF,回收率良好,范围为 94.4-102.4%。

更新日期:2020-10-11
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