Laboratory of Physical Chemistry Research, Faculty of Sciences, National University of Engineering, Av. Tupac Amaru 210, Rimac, Lima, Peru.
Department of Analytical Chemistry, Institute of Chemistry, State University of São Paulo (UNESP), 14801-970 Araraquara, SP, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Araraquara, SP, Brazil.
J Hazard Mater. 2020 Feb 15;384:121374. doi: 10.1016/j.jhazmat.2019.121374. Epub 2019 Oct 12.
A molecularly imprinted polymer (MIP) was developed for the determination of acid violet 19 (AV19) dye. The MIP was synthesized by polymerization using 1-vinyl imidazole (functional monomer) and 2,2'-azobis(2-methylpropionitrile) as the radical initiator. The functional monomer was previously selected by computational simulations. The MIP adsorption data could be fitted using the Langmuir model obtained a Q value of 6.93 mg g and 2.84 mg g for the corresponding non-imprinted polymer (NIP) and the process followed pseudo-second-order kinetics (k 0.2416 mg g min MIP). The BET specific surface areas were 229.6 m g and 28.6 m² g, to MIP and NIP, respectively. Analyses showed that the material provided excellent selectivity towards acid violet 19 (AV19) when compared to other analytes including Acid Violet 17 (AV17), Tartrazine (TZ), Acid Red 14 (AR14), Patent blue-VF (PBV), Sunset yellow FCF (SY) and Acid Red 1 (AR1). The calculated K value for the MIP was 0.116 L g and the imprinting factor was 2.89. This alternative and effective material for the enrichment, extraction, and determination of acid violet 19 presents in complex real samples was applied using two different rivers water and industrial effluent, with excellent recoveries values ranging between 85% up to 99%.
一种用于测定酸性紫 19（AV19）染料的分子印迹聚合物（MIP）被开发出来。MIP 通过聚合反应合成，使用 1-乙烯基咪唑（功能单体）和 2,2'-偶氮双（2-甲基丙腈）作为自由基引发剂。功能单体是通过计算模拟预先选择的。MIP 的吸附数据可以用 Langmuir 模型拟合，得到 Q 值为 6.93mg g 和 2.84mg g，对应非印迹聚合物（NIP）和过程遵循伪二级动力学（k 0.2416mg g min MIP）。BET 比表面积分别为 229.6m g 和 28.6m 2 g，适用于 MIP 和 NIP。分析表明，与其他分析物（包括酸性紫 17（AV17）、酒石黄（TZ）、酸性红 14（AR14）、专利蓝-VF（PBV）、日落黄 FCF（SY）和酸性红 1（AR1）相比，该材料对酸性紫 19（AV19）具有优异的选择性。MIP 的计算 K 值为 0.116 L g，印迹因子为 2.89。这种用于复杂实际样品中酸性紫 19 的富集、提取和测定的替代有效材料，已应用于两条不同的河流水和工业废水，回收率值在 85%至 99%之间。
