Publication:
Electrochemical sensors for the simultaneous determination of zinc, cadmium and lead using a Nafion/ionic liquid/graphene composite modified screen-printed carbon electrode

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Issued Date

2016

Resource Type

Article

File Type

application/pdf

ISSN

32670

DOI

10.1016/j.aca.2016.03.026

Other identifier(s)

2-s2.0-84990253595

Rights Holder(s)

Scopus

Bibliographic Citation

Analytica Chimica Acta. Vol 918, (2016), p.26-34

Suggested Citation

Chaiyo S., Mehmeti E., Žagar K., Siangproh W., Chailapakul O., Kalcher K. Electrochemical sensors for the simultaneous determination of zinc, cadmium and lead using a Nafion/ionic liquid/graphene composite modified screen-printed carbon electrode. Analytica Chimica Acta. Vol 918, (2016), p.26-34. doi:10.1016/j.aca.2016.03.026 Retrieved from: https://hdl.handle.net/20.500.14740/5458

Title

Electrochemical sensors for the simultaneous determination of zinc, cadmium and lead using a Nafion/ionic liquid/graphene composite modified screen-printed carbon electrode

Author(s)

Chaiyo S.
 Mehmeti E.
 Žagar K.
 Siangproh W.
 Chailapakul O.
 Kalcher K.

Abstract

A simple, low cost, and highly sensitive electrochemical sensor, based on a Nafion/ionic liquid/graphene composite modified screen-printed carbon electrode (N/IL/G/SPCE) was developed to determine zinc (Zn(II)), cadmium (Cd(II)), and lead (Pb(II)) simultaneously. This disposable electrode shows excellent conductivity and fast electron transfer kinetics. By in situ plating with a bismuth film (BiF), the developed electrode exhibited well-defined and separate peaks for Zn(II), Cd(II), and Pb(II) by square wave anodic stripping voltammetry (SWASV). Analytical characteristics of the BiF/N/IL/G/SPCE were explored with calibration curves which were found to be linear for Zn(II), Cd(II), and Pb(II) concentrations over the range from 0.1 to 100.0 ng L-1. With an accumulation period of 120 s detection limits of 0.09 ng mL-1, 0.06 ng L-1 and 0.08 ng L-1 were obtained for Zn(II), Cd(II) and Pb(II), respectively using the BiF/N/IL/G/SPCE sensor, calculated as 3σ value of the blank. In addition, the developed electrode displayed a good repeatability and reproducibility. The interference from other common ions associated with Zn(II), Cd(II) and Pb(II) detection could be effectively avoided. Finally, the proposed analytical procedure was applied to detect the trace metal ions in drinking water samples with satisfactory results which demonstrates the suitability of the BiF/N/IL/G/SPCE to detect heavy metals in water samples and the results agreed well with those obtained by inductively coupled plasma mass spectrometry. © 2016 Elsevier B.V.

Subject(s)

Bismuth
 Cadmium
 Cadmium compounds
 Drug products
 Electrochemical sensors
 Electrodes
 Heavy metals
 Lead
 Liquids
 Mass spectrometry
 Metal ions
 Metals
 Potable water
 Trace analysis
 Trace elements
 Voltammetry
 Zinc
 Zinc compounds
 Analytical procedure
 Bismuth film
 Disposable electrodes
 Drinking water samples
 Fast electron transfer
 Screen-printed carbon electrodes
 Simultaneous determinations
 Square wave anodic stripping voltammetry
 Electrochemical electrodes
 Bismuth
 Cadmium
 Graphene
 Hydroxyapatite
 Ionic liquid
 Lead
 Mercury
 Zinc
 Anodic stripping potentiometry
 Article
 Atomic absorption spectrometry
 Calibration
 Chemical modification
 Conductance
 Cyclic potentiometry
 Diffusion coefficient
 Electric conductivity
 Electrochemical analysis
 Electrode
 Electron transport
 Mass spectrometry
 Oxidation reduction reaction
 Priority journal
 Screen printed carbon eectrode
 Sensor
 Surface area
 Viscosity
 Water analysis
 Water sampling

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URI

https://hdl.handle.net/20.500.14740/5458

Collections

Scopus: Year 1983-2021

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