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Total Determination of Estrogenic Phenolic Compounds in River Water Using a Sensor Based on Reduced Graphene Oxide and Molecularly Imprinted Polymer
Electroanalysis ( IF 2.7 ) Pub Date : 2018-06-19 , DOI: 10.1002/elan.201800238
Guilherme Bettio Braga 1 , Ana Elisa Ferreira Oliveira 1 , Arnaldo César Pereira 1
Affiliation  

The contamination of water and wastewater by emerging pollutants, due to the anthropogenic activities, are an environmental problem that generates several negative impacts. In this range of species, steroids have gaining notoriety because their action of endocrine‐disruption. In this work, they are called estrogenic phenolic compounds (EPCs): estrone (E1), estradiol (E2), ethinyl estradiol (EE2) and estriol (E3), for determination using an electrochemical sensor based on reduced graphene oxide (rGO) and molecularly imprinted polymer (MIP). The analytical method developed, allied with the experimental and operational optimizations, proved to be effective for the total quantification of the EPCs in river water. The method shows sensitivity of 1.12 μA/μmol L−1, detection limit of 26.8 nmol L−1 and linear range of 0.16–15 μmol L−1. The similar electrochemical behavior of the four compounds studied (E1, E2, EE2 and E3) and the efficiency of the modified composite (rGO, MIP) in the fabrication of the sensor resulted in high electrical conductivity and selective adsorptivity, respectively.

中文翻译:

基于还原氧化石墨烯和分子印迹聚合物的传感器总测定河水中的雌激素酚类化合物

由于人为活动,新兴污染物对水和废水的污染是一个环境问题,会产生若干负面影响。在这种物种中,类固醇因其内分泌干扰作用而臭名昭著。在这项工作中,它们被称为雌激素酚类化合物(EPC):雌酮(E 1),雌二醇(E 2),乙炔基雌二醇(EE 2)和雌三醇(E 3)),用于使用基于还原氧化石墨烯(rGO)和分子印迹聚合物(MIP)的电化学传感器进行测定。结合实验和操作优化,开发出的分析方法被证明对河水中EPC的总定量有效。该方法的灵敏度为1.12μA/μmolL -1,检测极限为26.8 nmol L -1,线性范围为0.16至15μmolL -1。所研究的四种化合物(E 1,E 2,EE 2和E 3)的相似电化学行为)和改性复合材料(rGO,MIP)在传感器制造中的效率分别导致了高电导率和选择性吸附。
更新日期:2018-06-19
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