Development of Electrochemical Platform Based on Molecularly Imprinted Poly(methacrylic acid) Grafted on Iniferter‐modified Carbon Nanotubes for 17β‐Estradiol Determination in Water Samples

This paper describes the development of a new electrochemical sensor for 17β‐estradiol (E2) determination based on glassy carbon electrode (GCE) modified with molecularly imprinted polymer grafted onto iniferter‐multiwall carbon nanotubes surface (MIP‐MWCNT) and dihexadecyl‐hydrogen‐phosphate (DHP)....

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Bibliographic Details
Published in:Electroanalysis (New York, N.Y.) N.Y.), 2021-03, Vol.33 (3), p.568-578
Main Authors: Marques, Gabriel Lopes, Rocha, Luana Rianne, Prete, Maiyara Carolyne, Gorla, Felipe Augusto, Moscardi dos Santos, Dayana, Segatelli, Mariana Gava, Teixeira Tarley, César Ricardo
Format: Article
Language:English
Subjects:
estrogens
grafting from
nanocomposite
sodium diethyldithiocarbamate
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Summary:This paper describes the development of a new electrochemical sensor for 17β‐estradiol (E2) determination based on glassy carbon electrode (GCE) modified with molecularly imprinted polymer grafted onto iniferter‐multiwall carbon nanotubes surface (MIP‐MWCNT) and dihexadecyl‐hydrogen‐phosphate (DHP). The electrochemical method was based on closed‐circuit preconcentration of E2 in 0.1 mol L−1 phosphate buffer (pH 7.0) during 500 s. Upon preconcentration, E2 was determined by differential pulse voltammetry (DPV) exhibiting a limit of detection of 0.01 μmol L−1. The sensor exhibited higher selectivity toward E2 and it was applied for E2 determination in natural water samples, with accuracy attested by HPLC‐DAD.
ISSN:1040-0397
1521-4109
DOI:10.1002/elan.202060270