Fabrication of a sensitive electrochemical sensor based on hybrid polyamide/chromotropic acid nanofibers electrospun on glassy carbon electrode for Hg 2+ sensing in drinking water and canned fish samples

In this study, a new electrochemical sensor was designed based on a hybrid of polyamide (PA) and chromotropic acid (CA) nanofibers electrospun on a glassy carbon electrode (GCE) configured as PANFs-CANFs/GCE. The electrochemical response of this sensor showed an excellent electrochemical activity fo...

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Bibliographic Details
Published in:Food chemistry 2023-07, Vol.414, p.135467
Main Authors: Sadeghi, Ehsan, Rahimi, Faezeh, Azizi, Zohreh, Kaki, Samineh, Babakhanian, Arash
Format: Article
Language:English
Subjects:
Animals
Carbon
Drinking Water
Electrochemical Techniques - methods
Electrodes
Ions
Mercury
Nanofibers
Nylons
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Summary:In this study, a new electrochemical sensor was designed based on a hybrid of polyamide (PA) and chromotropic acid (CA) nanofibers electrospun on a glassy carbon electrode (GCE) configured as PANFs-CANFs/GCE. The electrochemical response of this sensor showed an excellent electrochemical activity for the detection of Hg ions using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods. The proposed sensor exhibited the prominent electrocatalytic value of (α = 0.60, Log Ks = 3.45 s and Γ = 3.30 × 10 mmol/cm ) as a result of PANFs-CANFs/GCE response to Hg ions. The recommended sensor also demonstrated a linear portion in the calibration curve over the concentration range of 30 to 450 nM with the limit of detection (LOD) and limit of quantitation (LOQ) of 9.98 nM and 29.97 nM, respectively. The fabricated sensor revealed reproducible and repeatable responses with a high level of stability. Therefore, we highly recommend this new electro-spun based sensor for quantifying Hg in drinking water and canned fish samples with the accurate and precise results and no side interferences.
ISSN:1873-7072