A novel electrochemical sensor based on Fe3O4-doped nanoporous carbon for simultaneous determination of diethylstilbestrol and 17β-estradiol in toner

Chen, Xiaoman; Shi, Zhaoxia; Hu, Yufei; Xiao, Xiaohua; Li, Gongke

doi:10.1016/j.talanta.2018.05.063

Cited by 38 publications

(8 citation statements)

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“…The equation was as followed E pa (V)=1.02–0.065 pH (r=0.9984). The value of slope of 0.065 V pH −1 (Figure 5C) is close to that of a Nernst system (0.059 V pH −1 ), revealing that the protons number is equal to the electron transfer number in the oxidation processes of E2, the proposed reaction is described in Figure 5D, this conclusion is addressed in previous works [41, 45, 49, 50].…”

Section: Resultssupporting

confidence: 79%

“…(2018), it is described the employed of Fe 3 O 4 ‐doped nanoporous carbon (Fe 3 O 4 −NC) in fabricated into an electrochemical sensor for simultaneous analysis of diethylstilbestrol (DES) and 17β‐estradiol (E2) in toner. The experimental results manifest that the sensor can be used for the simultaneous detection of DES and E2 in the actual toner sample [24].…”

Section: Introductionmentioning

confidence: 73%

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Sensitive Determination of 17β‐Estradiol using a Magneto Sensor Based on Magnetic Molecularly Imprinted Polymer

et al. 2020

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The analysis of 17β‐estradiol with high sensitivity and selectivity is extremely relevant to control the impacts that this compound can cause on health and the environment. Thus, we describe the development and application of a magneto carbon paste electrode based on magnetic molecularly imprinted polymer (MCPE‐MMIP) for determination of 17β‐estradiol. The analyte adsorbed on the MMIP was immobilized on the electrode surface by magnetic capture. The morphological and structural characterization of the obtained MMIP suggests that the material was effectively synthesized. MCPE‐MMIP showed an improvement in the sensitivity for 17β‐estradiol detection when compared to electrode configurations in the absence of this material. The optimum conditions (0.10 mol L−1 phosphate buffer pH 7.0) were reached by differential pulse adsorptive stripping voltammetry (DPAdSV), in which the method presented linearity ranged from 0.06 to 175 μmol L−1 with limits of detection and quantification of 0.02 and 0.06 μmol L−1, respectively. The proposed sensor was applied effectively in the analysis of 17β‐estradiol in river water and raw milk samples, exhibiting excellent recovery values (between 96.20 and 104 %), which were confirmed by HPLC analysis.

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Section: Resultssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 73%

Sensitive Determination of 17β‐Estradiol using a Magneto Sensor Based on Magnetic Molecularly Imprinted Polymer

et al. 2020

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“…Various major methods have been applied to the detection of ED such as immunoassay, HPLC, and mass spectrometry . But the electro-analytical method has many advantages over them such as simple, inherent high selectivity, fast detection, and low cost. − In this regard, different electrode materials were developed to modify conventional electrodes, such as Fe 3 O 4 -doped nanoporous carbon, Pd/N-doped reduced graphene, DNA aptamer immobilized gold electrode chip, enzyme biosensor, and conductive biochar nanoparticles . But these materials have their own limitations.…”

Section: Introductionmentioning

confidence: 99%

Ultrasmall Au(0) Inserted Hollow PCN-222 MOF for The High-Sensitive Detection of Estradiol

et al. 2020

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Here, the effect of morphology on the electrocatalytic activity of metal–organic framework (MOF) was investigated. Post synthetic gold (Au) insertion was done into hollow PCN-222 (HPCN-222) and solid PCN-222 (SPCN-222) frameworks by a simple hydrothermal method. The crystalline nature, chemical composition, and morphologies of the synthesized MOFs were characterized by PXRD, XPS, and TEM. Electrochemical characterizations were done by cyclic voltammetry and electrochemical impedance spectroscopy. The excellent electrocatalytic activity of highly small-sized Au(0) with the enhancement of electrical conductivity through a hopping mechanism combined with a hollow structure and high surface area in the HPCN-222 MOF hugely alters the electrochemical properties. Overall, a better electrocatalytic surface area, charge transfer coefficient, and catalytic activity were generated at the modified electrode. The hollow structure MOF showed better electrocatalytic activity than solid structured MOF. The AuHPCN-222 modified glassy carbon electrode (AuHPCN-222/GCE) electrochemical sensor was employed for the analytical analysis of estradiol (ED) in an optimum experimental condition. AuHPCN-222 showed selective and better electrocatalytic activity toward ED than GCE. The differential pulse voltammetric measurements by the fabricated sensor showed two linear determination ranges for ED; those are 0.01–1 and 1–220 μM. The measured limit of detection (m-LOD) was found to be 0.5 nM with the highest sensitivity of 2.2 μA μM cm–2. The analytical performances for the detection of ED in human urine and serum samples were done with reasonable recoveries (98%–103%) using the standard addition method. Also, the sensor showed better reproducibility and repeatability with stability.

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“…This result is in accordance with those in the literature, where some studies reported the electrooxidation of E2 involving the same number of electrons and protons. 6,34 Selectivity of the proposed sensor…”

Section: Inuence Of Phmentioning

confidence: 99%

An electrochemical sensor modified with a molecularly imprinted polymer and carbon black for 17-β-estradiol detection

Silva

Pereira

2022

Anal. Methods

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A novel electrochemical sensor based on Fe3O4-doped nanoporous carbon for simultaneous determination of diethylstilbestrol and 17β-estradiol in toner

Cited by 38 publications

References 38 publications

Sensitive Determination of 17β‐Estradiol using a Magneto Sensor Based on Magnetic Molecularly Imprinted Polymer

Sensitive Determination of 17β‐Estradiol using a Magneto Sensor Based on Magnetic Molecularly Imprinted Polymer

Ultrasmall Au(0) Inserted Hollow PCN-222 MOF for The High-Sensitive Detection of Estradiol

An electrochemical sensor modified with a molecularly imprinted polymer and carbon black for 17-β-estradiol detection

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