NDLI: Differential Electrolytic Potentiometry: a Detector in the Flow Injection Analysis of Cyanide Using Silver Electrodes Modified with Carbon Nanotubes

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Differential Electrolytic Potentiometry: a Detector in the Flow Injection Analysis of Cyanide Using Silver Electrodes Modified with Carbon Nanotubes

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Differential Electrolytic Potentiometry: a Detector in the Flow Injection Analysis of Cyanide Using Silver Electrodes Modified with Carbon Nanotubes

Content Provider	Springer Nature Link
Author	Amayreh, Mousa Yaser Abulkibash, Abdalla Mahmud
Copyright Year	2017
Abstract	Differential electrolytic potentiometry (DEP) using silver electrodes coated with carbon nanotubes was applied as a detector in a flow injection analysis of cyanide. The direct current differential electrolytic potentiometry (dc-DEP) and the mark-space bias differential electrolytic potentiometry (m.s.b. DEP) both were applied as indicating systems. The parameters that give the best signal were investigated and optimized. A current density of $$17 \, μ \hbox {A cm}^{-2}$$ and a percentage bias of 2.8% were found to be optimum in case of dc-DEP and m.s.b. DEP, respectively. The optimum flow rate of both the analyte and the supporting electrolyte was found to be of $$85 \, μ \hbox {L s}^{-1}$$ using a coil length of 45 cm. In case of dc-DEP, a linear range of 1–65 ppm of KCN with a detection limit of 0.5 ppm and a relative standard deviation of 2.1% was observed. In case of m.s.b. DEP, a linear range of 1–65 ppm of KCN with a detection limit of 0.35 ppm and a relative standard deviation of 1.5% was observed. The proposed DEP-FIA methods are computer controlled, fast, sensitive, inexpensive and require low consumption of reagents.
Starting Page	4445
Ending Page	4451
Page Count	7
File Format	PDF
ISSN	2193567X
Journal	Arabian Journal for Science and Engineering
Volume Number	42
Issue Number	10
e-ISSN	21914281
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2017-06-02
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Differential electrolytic potentiometry Mark-space bias Silver electrode Carbon nanotube Flow injection Cyanide Engineering Science, Humanities and Social Sciences, multidisciplinary
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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