Anodic Stripping Voltammetry Determination of Lead ions using Highly Sensitive Modified Electrodes Based on Multi-walled Carbon Nanotube

Abstract[Ru(NH3)6]3+/Nafion modified indium tin oxide (ITO) electrodes were fabricated via the drop coating technique and were used for the simultaneous determination of lead (Pb2+), cadmium (Cd2+), and zinc (Zn2+) in trace amounts using anodic stripping voltammetry (ASV). The amount of [Ru(NH3)6]3+ in the coating solution was varied at 5 mg, 10 mg, and 15 mg. The fabricated electrodes were used to detect varying concentrations of Pb, Cd and Zn. ASV results showed that as the amount of [Ru(NH3)6]3+ was increased, the reduction current of the heavy metals increased as well. The Pearson correlation values obtained for Pb and Cd were close to 1.0, indicating a strong positive linear relationship between the variables. The minimum heavy metal concentration that can be simultaneously detected by the fabricated electrodes is 0.5 ppm.

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Determination of Trace Metals by Anodic Stripping Voltammetry Using a Carbon Nanotube Tower Electrode

Electroanalysis ◽

10.1002/elan.201000674 ◽

2011 ◽

Vol 23 (5) ◽

pp. 1252-1259 ◽

Cited By ~ 60

Author(s):

Xuefei Guo ◽

Yeoheung Yun ◽

Vesselin N. Shanov ◽

H. Brian Halsall ◽

William R. Heineman

Keyword(s):

Carbon Nanotube ◽

Trace Metals ◽

Anodic Stripping Voltammetry ◽

Stripping Voltammetry ◽

Anodic Stripping

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Composite PEDOT/Au Nanoparticles Modified Electrodes for Determination of Mercury at Trace Levels by Anodic Stripping Voltammetry

Electroanalysis ◽

10.1002/elan.201000469 ◽

2010 ◽

Vol 23 (2) ◽

pp. 456-462 ◽

Cited By ~ 25

Author(s):

Marco Giannetto ◽

Giovanni Mori ◽

Fabio Terzi ◽

Chiara Zanardi ◽

Renato Seeber

Keyword(s):

Au Nanoparticles ◽

Anodic Stripping Voltammetry ◽

Modified Electrodes ◽

Stripping Voltammetry ◽

Anodic Stripping

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Highly sensitive determination of mercury using copper enhancer by diamond electrode coupled with sequential injection–anodic stripping voltammetry

Analytica Chimica Acta ◽

10.1016/j.aca.2014.09.011 ◽

2014 ◽

Vol 852 ◽

pp. 55-62 ◽

Cited By ~ 19

Author(s):

Sudkate Chaiyo ◽

Orawon Chailapakul ◽

Weena Siangproh

Keyword(s):

Anodic Stripping Voltammetry ◽

Stripping Voltammetry ◽

Sequential Injection ◽

Diamond Electrode ◽

Highly Sensitive ◽

Anodic Stripping ◽

Sensitive Determination

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Determination of Lead (Pb2+) by Anodic Stripping Voltammetry Based on [Ru(NH3)6]3+/Nafion Modified Electrodes

Journal of New Materials for Electrochemical Systems ◽

10.14447/jnmes.v17i4.390 ◽

2014 ◽

Vol 17 (4) ◽

pp. 205-208 ◽

Cited By ~ 7

Author(s):

Shirley Tiong Palisoc ◽

Michelle Tiamzon Natividad ◽

Patricia Denise DeVera ◽

Benjamin Simone B. Tuason

Keyword(s):

Heavy Metal ◽

Indium Tin Oxide ◽

Anodic Stripping Voltammetry ◽

Modified Electrodes ◽

Stripping Voltammetry ◽

Redox Mediator ◽

Anodic Stripping ◽

Coating Method ◽

Analyte Solution

Chemically modified [Ru(NH3)6]3+ doped Nafion® thin film was fabricated on indium tin oxide (ITO) coated glass electrodes by using the drop-coating method to detect heavy metal ions of Pb(II) in de-ionized water analyte solution via anodic stripping voltammetry (ASV). This study also determined the effect of varying the concentration of the mediator ([Ru(NH3)6]3+) on the detection of the said heavy metals. The redox mediator Ru(NH3)6]3+ used in the study was effectively incorporated and immobilized within the Nafion modified electrodes. Lead concentration in the electrolyte solution and the concentration of the redox mediator was varied to control the properties of the fabricated electrodes which utilized for heavy metal detection through ASV. The conducting properties of ITO electrodes were enhanced with the deposition of Nafion® attaining minimal interference. The stripping current peaks increased with the concentration of the heavy metal present in the solution as well as with the mediator concentration.

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