A glassy carbon (GC) electrode was modified with poly(1,8-diaminonaphthalene) (p-1,8-DAN) that was coated with silver nanoparticles (Ag NPs) (size: 10.0–60.0 nm by TEM) by electrodeposition process using cyclic voltammetry (CV) technique. The resulting nanocomposite was characterized by FE-SEM, AFM, EDX, XPS, TEM and XRD. The surface area and the electrochemical characteristics of the electrode were investigated by CV and square wave voltammetry (SWV) techniques, and the probe preparation conditions were optimized. The electrode was used for individual and simultaneous determination of the heavy metal ions cadmium(II) (Cd2+), lead(II) (Pb2+) and copper(II) (Cu2+) in water samples by square wave anodic stripping voltammetry (ASV) using scan rate 0.005 V. s−1. The probe showed well separated anodic stripping peaks for Cd2+, Pb2+, and Cu2+. Attractive features of the method include (a) peak voltages of −1.02, −0.78 and − 0.32 V (vs. Ag/AgCl) for the three ions, and (b) low limits of detection (19, 30 and 6 ng.L−1, respectively. The electrode can also detect zinc(II) (Zn2+) and mercury(II) (Hg2+), typically at −1.36 V and + 0.9, respectively.
Nanoprobe Electrodeposition Individual and simultaneous determination Stripping anodic voltammetry
This is a preview of subscription content, log in to check access.
The authors are appreciative to Alexander von Humboldt Foundation for providing some electrodes and accessories.
Compliance with ethical standards
The author(s) declare that they have no competing interests.
Su Z, Liu Y, Zhang Y, Xie Q, Chen L, Huang Y, Fu Y, Meng Y, Li X, Ma M, Yao S (2013) Thiol–ene chemistry guided preparation of thiolated polymeric nanocomposite for anodic stripping voltammetric analysis of Cd2+ and Pb2+. Analyst 138(4):1180–1186. https://doi.org/10.1039/C2AN36114KCrossRefPubMedGoogle Scholar
Guo Z, Li D-d, Luo X-k, Li Y-h, Zhao Q-N, Li M-m, Zhao Y-t, Sun T-s, Ma C (2017) Simultaneous determination of trace Cd (II), Pb (II) and Cu (II) by differential pulse anodic stripping voltammetry using a reduced graphene oxide-chitosan/poly-l-lysine nanocomposite modified glassy carbon electrode. J Colloid Interface Sci 490:11–22. https://doi.org/10.1016/j.jcis.2016.11.006CrossRefPubMedGoogle Scholar
Pokpas K, Zbeda S, Jahed N, Mohamed N, Baker PG, Iwuoha EI (2014) Electrochemically reduced graphene oxide pencil-graphite in situ plated bismuth-film electrode for the determination of trace metals by anodic stripping voltammetry. Int J Electrochem Sci 9:736–759. http://hdl.handle.net/10566/3290Google Scholar
Chamjangali MA, Kouhestani H, Masdarolomoor F, Daneshinejad H (2015) A voltammetric sensor based on the glassy carbon electrode modified with multi-walled carbon nanotube/poly(pyrocatechol violet)/bismuth film for determination of cadmium and lead as environmental pollutants. Sensors Actuators B Chem 216:384–393. https://doi.org/10.1016/j.snb.2015.04.058CrossRefGoogle Scholar
Chira A, Bucur B, Bucur MP, Radu GL (2014) Electrode-modified with nanoparticles composed of 4,4[prime or minute]-bipyridine-silver coordination polymer for sensitive determination of Hg (II), Cu (II) and Pb (II). New J Chem 38(11):5641–5646. https://doi.org/10.1039/C4NJ01245CCrossRefGoogle Scholar