Mercury meniscus on solid silver amalgam electrode as a sensitive electrochemical sensor for tetrachlorvinphos
Joint Authors
al-Qasimi, Nuha
Khan, Amna N.
Tahir Soomro, M.
Hamid, A.
Ismail, Iqbal M. I.
Aslam, M.
Source
Journal of Saudi Chemical Society
Issue
Vol. 22, Issue 4 (31 May. 2018), pp.496-507, 12 p.
Publisher
Publication Date
2018-05-31
Country of Publication
Saudi Arabia
No. of Pages
12
Main Subjects
Abstract EN
The in-house prepared mercury meniscus modified solid silver amalgam electrode (m-AgSAE) was successfully applied for the detection of organophosphate pesticide tetrachlorvinphos in pH 7 buffer solution.
The electrochemical performance of m-AgSAE for the reduction of tetrachlorvinphos was evaluated using cyclic voltammetry (CV), differential pulse voltammetry (DPV), and square wave voltammetry (SWV), respectively.
The surface morphology of solid silver electrode (AgE), as-amalgamated solid silver amalgam electrode (AgSAE), and polished solid silver amalgam electrode (p-AgSAE) was examined by field emission scanning electron microscopy (FESEM).
Among the applied techniques, DPV and SWV analysis showed a remarkable increase in the reduction peak current and provided a simple, fast, and sensitive method for the determination of tetrachlorvinphos.
The electrochemical impedance spectroscopy (EIS) was used to correlate the electrocatalytic activity of AgSAE, p-AgSAE and m-AgSAE with their interfacial charge transport capabilities.
Under the optimized experimental conditions, the DPV and SWV responses were linear over the 1–9 lM and 10–50 lMconcentration ranges with a detection limit of 0.06 lMforDPVand 0.04 for SWV.
The estimation of tetrachlorvinphos in the ground and waste water samples with the proposed method was in good agreement with that of the added amount.
The proposed electrochemical method not only extends the application of non-toxic m-AgSAE, but also offers new possibilities for fast and sensitive analysis of tetrachlorvinphos and its structural analogs in environmental samples.
American Psychological Association (APA)
al-Qasimi, Nuha& Hamid, A.& Khan, Amna N.& Aslam, M.& Ismail, Iqbal M. I.& Tahir Soomro, M.. 2018. Mercury meniscus on solid silver amalgam electrode as a sensitive electrochemical sensor for tetrachlorvinphos. Journal of Saudi Chemical Society،Vol. 22, no. 4, pp.496-507.
https://search.emarefa.net/detail/BIM-835407
Modern Language Association (MLA)
al-Qasimi, Nuha…[et al.]. Mercury meniscus on solid silver amalgam electrode as a sensitive electrochemical sensor for tetrachlorvinphos. Journal of Saudi Chemical Society Vol. 22, no. 4 (May. 2018), pp.496-507.
https://search.emarefa.net/detail/BIM-835407
American Medical Association (AMA)
al-Qasimi, Nuha& Hamid, A.& Khan, Amna N.& Aslam, M.& Ismail, Iqbal M. I.& Tahir Soomro, M.. Mercury meniscus on solid silver amalgam electrode as a sensitive electrochemical sensor for tetrachlorvinphos. Journal of Saudi Chemical Society. 2018. Vol. 22, no. 4, pp.496-507.
https://search.emarefa.net/detail/BIM-835407
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 506
Record ID
BIM-835407