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REVISTA DE CHIMIE
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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2018, Volume 69, Issue 1, 21-26

https://doi.org/10.37358/RC.18.1.6037

Gabriela Geanina Vasile, Georgiana Luiza Arnold, George Octavian Buica, Elena Diacu, Eleonora Mihaela Ungureanu, Cristina Dinu

Stripping Voltammetry on a new Modified Glassy Carbon Electrode for Lead Content Determination in Soft Water

Abstract:

This study develops a new electrochemical method for quantification of Pb in soft water using stripping voltammetry with a glassy carbon electrode modified with the functionalized azulene: (2E)-2-(azulen-1-ylmethylidene) hydrazine carbothioamide (L) as a complexing polymer film. The optimized steps of the proposed method consisted in experimental establishing of four parameters, namely: reduction time; reduction potential; complexation time; pH in acetate buffer and phosphate buffer. The modified electrodes were prepared in L solutions (1mM) in acetonitrile (CH3CN) containing tetra n-butyl ammonium perchlorate (0.1 M TBAP) as supporting electrolyte. The electrochemical method includes four main operations: 1) polymeric film formation by controlled potential electrolysis (CPE) at 1.7V using a charge of 1 mC; 2) film conditioning in 0.1 M buffer acetate solution using cyclic voltammetry; 3) 25 min complexation time in a standard solution prepared from lead nitrate (II) using as matrix ultrapure water or a real sample; 4) stripping by differential pulse voltammetry method (DPV) in acetate buffer at pH 4.0, after 120 s reduction time at a reduction potential of -1.0 V. Determination time for a single standard solution or real sample was around 45 min. Evaluation of the method performance parameters (linearity, working range, detection limit, quantification limit, repeatability, and recovery) was done. It confirms that the proposed method is suitable to detect and quantify lead content over 1.2 µg/L in soft water samples.
Keywords:
poly<(2E)-2-(azulen-1-ylmethylidene) hydrazine carbothioamide>; lead; polymeric film; stripping voltammetry; soft water

Issue: 2018, Volume 69, Issue 1
Pages: 21-26
Publication date: 2018/2/15
https://doi.org/10.37358/RC.18.1.6037
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Creative Commons License
This article is published under the Creative Commons Attribution 4.0 International License
Citation Styles
Cite this article as:
VASILE, G.G., ARNOLD, G.L., BUICA, G.O., DIACU, E., UNGUREANU, E.M., DINU, C., Stripping Voltammetry on a new Modified Glassy Carbon Electrode for Lead Content Determination in Soft Water, Rev. Chim., 69(1), 2018, 21-26.

Vancouver
Vasile GG, Arnold GL, Buica GO, Diacu E, Ungureanu EM, Dinu C. Stripping Voltammetry on a new Modified Glassy Carbon Electrode for Lead Content Determination in Soft Water. Rev. Chim.[internet]. 2018 Jan;69(1):21-26. Available from: https://doi.org/10.37358/RC.18.1.6037


APA 6th edition
Vasile, G.G., Arnold, G.L., Buica, G.O., Diacu, E., Ungureanu, E.M. & Dinu, C. (2018). Stripping Voltammetry on a new Modified Glassy Carbon Electrode for Lead Content Determination in Soft Water. Revista de Chimie, 69(1), 21-26. https://doi.org/10.37358/RC.18.1.6037


Harvard
Vasile, G.G., Arnold, G.L., Buica, G.O., Diacu, E., Ungureanu, E.M., Dinu, C. (2018). 'Stripping Voltammetry on a new Modified Glassy Carbon Electrode for Lead Content Determination in Soft Water', Revista de Chimie, 69(1), pp. 21-26. https://doi.org/10.37358/RC.18.1.6037


IEEE
G.G. Vasile, G.L. Arnold, G.O. Buica, E. Diacu, E.M. Ungureanu, C. Dinu, "Stripping Voltammetry on a new Modified Glassy Carbon Electrode for Lead Content Determination in Soft Water". Revista de Chimie, vol. 69, no. 1, pp. 21-26, 2018. [online]. https://doi.org/10.37358/RC.18.1.6037


Text
Gabriela Geanina Vasile, Georgiana Luiza Arnold, George Octavian Buica, Elena Diacu, Eleonora Mihaela Ungureanu, Cristina Dinu,
Stripping Voltammetry on a new Modified Glassy Carbon Electrode for Lead Content Determination in Soft Water,
Revista de Chimie,
Volume 69, Issue 1,
2018,
Pages 21-26,
ISSN 2668-8212,
https://doi.org/10.37358/RC.18.1.6037.
(https://revistadechimie.ro/Articles.asp?ID=6037)
Keywords: poly<(2E)-2-(azulen-1-ylmethylidene) hydrazine carbothioamide>; lead; polymeric film; stripping voltammetry; soft water


RIS
TY - JOUR
T1 - Stripping Voltammetry on a new Modified Glassy Carbon Electrode for Lead Content Determination in Soft Water
A1 - Vasile, Gabriela Geanina
A2 - Arnold, Georgiana Luiza
A3 - Buica, George Octavian
A4 - Diacu, Elena
A5 - Ungureanu, Eleonora Mihaela
A6 - Dinu, Cristina
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2018
VL - 69
IS - 1
SP - 21
EP - 26
UR - https://doi.org/10.37358/RC.18.1.6037
KW - poly<(2E)-2-(azulen-1-ylmethylidene) hydrazine carbothioamide>
KW - lead
KW - polymeric film
KW - stripping voltammetry
KW - soft water
ER -


BibTex
@article{RevCh2018P21,
author = {Vasile Gabriela Geanina and Arnold Georgiana Luiza and Buica George Octavian and Diacu Elena and Ungureanu Eleonora Mihaela and Dinu Cristina},
title = {Stripping Voltammetry on a new Modified Glassy Carbon Electrode for Lead Content Determination in Soft Water},
journal = {Revista de Chimie},
volume = {69},
number = {1},
pages = {21-26},
year = {2018},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.18.1.6037},
url = {https://revistadechimie.ro/Articles.asp?ID=6037}
}
 
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