Application of Graphene-Based Screen-Printed Electrodes for the Amperometric Determination of Estradiol in Water Samples
The behavior of three graphene-based screen-printed electrodes (SPEs) was explored for the electroanalytical application in estradiol (E2) measurement in water samples. Characterization of the sensor was carried out using cyclic voltammetry and scanning electron microscopy. The optimal applied potential for amperometric measurement was +0.65 V (vs Ag/AgCl). The amperometric sensors show a linear response in the concentration range of 0.83 to 4.15 μM for graphene ink SPE (GHPSPE), the concentration range of 0.83 to 4.98 μM for electrochemically exfoliated graphene (EEFGH) and 0.83 to 4.98 μM for 3D- graphene foam SPE (3D-GFSPE), Limit of detection of 13 nM, of 16 nM and 20 nM (S/N = 3), with sensitivities of 39.32 nA µM−1 cm−2, 3.412 nA µM−1 cm−2 and 36.27 nA µM−1 cm−2 respectively. Recovery studies were carried out in tap water spiked with 0.83μM E2, where an average recovery was 95%, and the coefficient of variance of 5.7%. Therefore, the graphene-based screen-printed sensors show the feasible application of the sensors in the voltammetric determination of E2 in water samples
Year of publication: |
[2022]
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Authors: | Musa, Auwal M. ; Kiely, Janice ; Luxton, Richard ; Honeychurch, Kevin C. |
Publisher: |
[S.l.] : SSRN |
Subject: | Stichprobenerhebung | Sampling | Wasserversorgung | Water supply | Wasserpolitik | Water policy |
Saved in:
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