Silver particles-modified carbon paste electrodes for differential pulse voltammetric determination of paraquat in ambient water samples
Joint Authors
Farahi, A.
Achak, M.
al-Gaini, L.
al-Muhammadi, M. A.
Bakasse, M.
Source
Arab Journal of Basic and Applied Sciences
Issue
Vol. 19, Issue 0 (29 Feb. 2016), pp.37-43, 7 p.
Publisher
University of Bahrain College of Science
Publication Date
2016-02-29
Country of Publication
Bahrain
No. of Pages
7
Main Subjects
Abstract EN
This paper describes the construction of silver particles-impregnated carbon paste electrode (Ag-CPE).
The new electrode revealed an interesting determination of paraquat (II).
The latter was accumulated on the modified electrode surface by adsorption onto silver particles and was reduced in 0.1 mol L1 of Na2SO4 electrolyte at 0.70 V and 1.0 V for peaks 1 and 2, respectively.
Experimental conditions were optimized by varying the heating temperature of the silver/carbon composite, the Ag/CP ratio, pH of measuring solution and accumulation time.
Under the optimized working conditions, calibration graphs were linear for the concentration ranging from 1.0 · 107 to 1.0 · 103 mol L1 with detection limits (DL, 3r) 3.3 and 6.4 · 109 mol L1, respectively, for peaks 1 and 2.
The precision of this methodology was evaluated for eight successive measurements of the same samples containing 1.0 · 104 mol L1 of paraquat.
The relative standard deviations (D.S.R.) were 1.9% and 2.4% for the peaks 1 and 2, respectively.
The Ag/CP composite was characterized by X-ray diffraction (XRD) and BET adsorption analysis.
American Psychological Association (APA)
Farahi, A.& Achak, M.& al-Gaini, L.& al-Muhammadi, M. A.& Bakasse, M.. 2016. Silver particles-modified carbon paste electrodes for differential pulse voltammetric determination of paraquat in ambient water samples. Arab Journal of Basic and Applied Sciences،Vol. 19, no. 0, pp.37-43.
https://search.emarefa.net/detail/BIM-668536
Modern Language Association (MLA)
Farahi, A.…[et al.]. Silver particles-modified carbon paste electrodes for differential pulse voltammetric determination of paraquat in ambient water samples. Arab Journal of Basic and Applied Sciences Vol. 19 (Feb. 2016), pp.37-43.
https://search.emarefa.net/detail/BIM-668536
American Medical Association (AMA)
Farahi, A.& Achak, M.& al-Gaini, L.& al-Muhammadi, M. A.& Bakasse, M.. Silver particles-modified carbon paste electrodes for differential pulse voltammetric determination of paraquat in ambient water samples. Arab Journal of Basic and Applied Sciences. 2016. Vol. 19, no. 0, pp.37-43.
https://search.emarefa.net/detail/BIM-668536
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 43
Record ID
BIM-668536