Lead determination on MWNT/Nafion composite modified glassy carbon electrodes

Qin Xu; Ni Na Liu; Jun Jie Zhu

doi:10.1002/cjoc.200591510

Lead determination on MWNT/Nafion composite modified glassy carbon electrodes

Qin Xu, Ni Na Liu, Jun Jie Zhu

Biochemistry

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

A composite material of nitric acid oxidized multiwalled carbon nanotube (MWNT) and Nafion was prepared. Such composite was modified on a glassy carbon electrode to determine trace of lead by differential pulsed voltammetry. In pH=6.47 NaNO₃ solution, Pb²⁺ ions were accumulated on the modified electrode at -0.4 V. Compared with a bare and a Nafion film coated electrode, the composite coated GC electrode can reduce the accumulating potential and eliminate the toxic character of mercury. The calibration plots were linear at low concentration of 5.0×10^-9-2.0×10 ^-8 mol/L and high concentration of 2.5×10^-8-5. 0×10^-6 mol/L. The performances characteristics indicate that the electrode can be used to determine trace Pb²⁺ ions.

Original language	English (US)
Pages (from-to)	1510-1514
Number of pages	5
Journal	Chinese Journal of Chemistry
Volume	23
Issue number	11
DOIs	https://doi.org/10.1002/cjoc.200591510
State	Published - Nov 1 2005

Keywords

Composite
Differential pulsed voltammetry
Electrochemistry
Lead

ASJC Scopus subject areas

Chemistry(all)

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10.1002/cjoc.200591510

Cite this

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title = "Lead determination on MWNT/Nafion composite modified glassy carbon electrodes",

abstract = "A composite material of nitric acid oxidized multiwalled carbon nanotube (MWNT) and Nafion was prepared. Such composite was modified on a glassy carbon electrode to determine trace of lead by differential pulsed voltammetry. In pH=6.47 NaNO3 solution, Pb2+ ions were accumulated on the modified electrode at -0.4 V. Compared with a bare and a Nafion film coated electrode, the composite coated GC electrode can reduce the accumulating potential and eliminate the toxic character of mercury. The calibration plots were linear at low concentration of 5.0×10-9-2.0×10 -8 mol/L and high concentration of 2.5×10-8-5. 0×10-6 mol/L. The performances characteristics indicate that the electrode can be used to determine trace Pb2+ ions.",

keywords = "Composite, Differential pulsed voltammetry, Electrochemistry, Lead",

author = "Qin Xu and Liu, {Ni Na} and Zhu, {Jun Jie}",

year = "2005",

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doi = "10.1002/cjoc.200591510",

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volume = "23",

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journal = "Chinese Journal of Chemistry",

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publisher = "Shanghai Institute of Organic Chemistry",

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TY - JOUR

T1 - Lead determination on MWNT/Nafion composite modified glassy carbon electrodes

AU - Xu, Qin

AU - Liu, Ni Na

AU - Zhu, Jun Jie

PY - 2005/11/1

Y1 - 2005/11/1

N2 - A composite material of nitric acid oxidized multiwalled carbon nanotube (MWNT) and Nafion was prepared. Such composite was modified on a glassy carbon electrode to determine trace of lead by differential pulsed voltammetry. In pH=6.47 NaNO3 solution, Pb2+ ions were accumulated on the modified electrode at -0.4 V. Compared with a bare and a Nafion film coated electrode, the composite coated GC electrode can reduce the accumulating potential and eliminate the toxic character of mercury. The calibration plots were linear at low concentration of 5.0×10-9-2.0×10 -8 mol/L and high concentration of 2.5×10-8-5. 0×10-6 mol/L. The performances characteristics indicate that the electrode can be used to determine trace Pb2+ ions.

AB - A composite material of nitric acid oxidized multiwalled carbon nanotube (MWNT) and Nafion was prepared. Such composite was modified on a glassy carbon electrode to determine trace of lead by differential pulsed voltammetry. In pH=6.47 NaNO3 solution, Pb2+ ions were accumulated on the modified electrode at -0.4 V. Compared with a bare and a Nafion film coated electrode, the composite coated GC electrode can reduce the accumulating potential and eliminate the toxic character of mercury. The calibration plots were linear at low concentration of 5.0×10-9-2.0×10 -8 mol/L and high concentration of 2.5×10-8-5. 0×10-6 mol/L. The performances characteristics indicate that the electrode can be used to determine trace Pb2+ ions.

KW - Composite

KW - Differential pulsed voltammetry

KW - Electrochemistry

KW - Lead

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JO - Chinese Journal of Chemistry

JF - Chinese Journal of Chemistry

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Lead determination on MWNT/Nafion composite modified glassy carbon electrodes

Abstract

Keywords

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