Chemically modified carbon paste electrode for the detection of lead, cadmium and zinc ions

Purpose This paper aims to develop an inexpensive, portable, sensitive and environmentally friendly electrochemical sensor to quantify trace metals. Design/methodology/approach A sensor was constructed by modifying carbon paste electrode for the determination of lead, cadmium and zinc ions using square wave anodic stripping voltammetry (SWASV). The modified electrode was prepared by inserting homogeneous mixture of 2-hydroxy-acetophenonethiosemicarbazone, graphite powder and mineral oil. Various important parameters controlling the performance of the sensor were investigated and optimized. Electrochemical behavior of modified electrode was characterized by cyclic voltammetry. Findings Modified carbon pastes electrodes showed three distinct peaks at −0.50, −0.76 and −1.02 V vs silver/silver chloride corresponding to the oxidation of lead, cadmium and zinc ions at the electrode surface, respectively. The highest peak currents for all the metal ions under study were observed in the phosphate buffer solution at pH 1 with a deposition time of 70 s. The sensor exhibited linear behavior in the range of 0.25-12.5 μg mL-1 for lead and cadmium and 0.25-10.0 μg mL−1 for zinc. The limit of detection was calculated as 78.81, 96.17 and 91.88 ng mL−1 for Pb2+, Cd2+and Zn2+, respectively. The modified electrode exhibited good stability and repeatability. Originality/value A chemically modified electrode with Schiff base was applied to determine the content of cadmium, lead and zinc ions in aqueous solutions using SWASV.

[1]  A. Tiwari,et al.  Toxicity of lead: A review with recent updates , 2012, Interdisciplinary toxicology.

[2]  Xuan Dai,et al.  Simultaneous determination of lead(II) and cadmium(II) at a diacetyldioxime modified carbon paste electrode by differential pulse stripping voltammetry. , 2003, Talanta.

[3]  Nitin Kumar,et al.  Trace determination of cadmium in water using anodic stripping voltammetry at a carbon paste electrode modified with coconut shell powder , 2014, Journal of Analytical Science and Technology.

[4]  Masoumeh Tabatabaee,et al.  Simultaneous trace-levels determination of Hg(II) and Pb(II) ions in various samples using a modified carbon paste electrode based on multi-walled carbon nanotubes and a new synthesized Schiff base. , 2012, Analytica chimica acta.

[5]  Brendan O'Flynn,et al.  DEPLOY: a long term deployment of a water quality sensor monitoring system , 2012 .

[6]  Núria Serrano,et al.  Crown ether-modified electrodes for the simultaneous stripping voltammetric determination of Cd(II), Pb(II) and Cu(II). , 2015, Talanta.

[7]  Sallehuddin Ibrahim,et al.  Development of planar electromagnetic sensor array for nitrate and sulphate detection in natural water sources , 2015 .

[8]  Harsha Devnani,et al.  Black Rice Modified Carbon Paste Electrode for the Voltammetric Determination of Pb(II), Cd(II), Cu(II) and Zn(II) , 2014 .

[9]  M. Bakasse,et al.  Electrochemical determination of cadmium(II) at platinum electrode modified with kaolin by square wave voltammetry. , 2009, Journal of hazardous materials.

[10]  H. Luo,et al.  Determination of cadmium(II) by square wave anodic stripping voltammetry using bismuth–antimony film electrode , 2012 .

[11]  Ai Ling Tan,et al.  Synthesis, structural characterization and electrochemical studies of nickel(II), copper(II) and cobalt(III) complexes of some ONS donor ligands derived from thiosemicarbazide and S-alkyl/aryl dithiocarbazates , 2012, Transition Metal Chemistry.

[12]  V. Jovanovski,et al.  Copper film electrode for anodic stripping voltammetric determination of trace mercury and lead , 2015 .

[13]  E. Richter,et al.  On-site fuel electroanalysis: determination of lead, copper and mercury in fuel bioethanol by anodic stripping voltammetry using screen-printed gold electrodes. , 2014, Analytica chimica acta.

[14]  S. Abbasi,et al.  A highly sensitive method for simultaneous determination of ultra trace levels of copper and cadmium in food and water samples with luminol as a chelating agent by adsorptive stripping voltammetry. , 2011, Food chemistry.

[15]  César Ricardo Teixeira Tarley,et al.  Simultaneous determination of zinc, cadmium and lead in environmental water samples by potentiometric stripping analysis (PSA) using multiwalled carbon nanotube electrode. , 2009, Journal of hazardous materials.

[16]  Jing Li,et al.  Simultaneous determination of ultratrace lead and cadmium by square wave stripping voltammetry with in situ depositing bismuth at Nafion-medical stone doped disposable electrode. , 2011, Journal of hazardous materials.

[17]  Abbas Afkhami,et al.  Construction of a modified carbon paste electrode for the highly selective simultaneous electrochemical determination of trace amounts of mercury(II) and cadmium(II) , 2012 .

[18]  Jaroon Jakmunee,et al.  Determination of cadmium, lead, copper and zinc in the acetic acid extract of glazed ceramic surfaces by anodic stripping voltammetric method. , 2008, Talanta.

[19]  A. Afkhami,et al.  Highly sensitive simultaneous electrochemical determination of trace amounts of Pb(II) and Cd(II) using a carbon paste electrode modified with multi-walled carbon nanotubes and a newly synthesized Schiff base , 2013 .

[20]  Abdil Özdemir,et al.  Analysis of dietary minerals in selected seeds and nuts by using ICP-OES and assessment based on the recommended daily intakes , 2016 .

[21]  Hasan Bagheri,et al.  Preparation and characterization of magnetic nanocomposite of Schiff base/silica/magnetite as a preconcentration phase for the trace determination of heavy metal ions in water, food and biological samples using atomic absorption spectrometry. , 2012, Talanta.

[22]  Emad A. Khudaish,et al.  A solid-state sensor based on tris(2,2 -bipyridyl)ruthenium(II)/poly(4-aminodiphenylamine) modified electrode: Characterization and applications , 2013 .

[23]  Graham A. Mills,et al.  A review of in situ methods and sensors for monitoring the marine environment , 2012 .

[24]  M. Heravi,et al.  Preparation and application of poly(2-amino thiophenol)/MWCNTs nanocomposite for adsorption and separation of cadmium and lead ions via solid phase extraction. , 2012, Journal of hazardous materials.

[25]  Robert Bogue.  Monitoring and predicting natural hazards in the environment , 2012 .

[26]  Sungyool Bong,et al.  Electrochemical deposition of bismuth on activated graphene-nafion composite for anodic stripping voltammetric determination of trace heavy metals , 2015 .

[27]  E. Mojica,et al.  Voltammetric Determination of Lead (II) Ions at Carbon Paste Electrode Modified with Banana Tissue , 2007 .

[28]  Limin Yang,et al.  Electrochemical behavior of graphene doped carbon paste electrode and its application for sensitive determination of ascorbic acid , 2011 .

[29]  E. Shams,et al.  Simultaneous determination of copper, zinc and lead by adsorptive stripping voltammetry in the presence of Morin , 2004 .

[30]  Ş. Kartal,et al.  Determination of lead and cadmium in food samples by the coprecipitation method. , 2009 .

[31]  S. Lunsford,et al.  Electrochemical response of carbon paste electrode modified with mixture of titanium dioxide/zirconium dioxide in the detection of heavy metals: lead and cadmium. , 2012, Talanta.

[32]  Jose H. Santos,et al.  Preparation and Evaluation of Acetabularia-Modified Carbon Paste Electrode in Anodic Stripping Voltammetry of Copper and Lead Ions , 2013 .

[33]  Paul J. Worsfold,et al.  Preconcentration techniques for the determination of mercury species in natural waters , 2009 .

[34]  Electrostatic charge interaction: a case study on tapered PMMA fiber for calcium nitrate detection , 2014 .

[35]  Lars Järup,et al.  Current status of cadmium as an environmental health problem. , 2009, Toxicology and applied pharmacology.

[36]  A. Profumo,et al.  Determination of Pb2+ in natural waters with 2-mercaptobenzimidazole-5-sulfonate (MBIS) chemically modified gold electrode. , 2010, Analytica chimica acta.

[37]  W. Mahmood Mat Yunus,et al.  Surface plasmon resonance spectroscopy as an alternative for sensing heavy metal ions: a review , 2013 .