A direct analysis of nanomolar metal ions in environmental water samples with Nafion-coated microelectrodes

Kim, Hong Jeong; Yun, Kwang-Seok; Yoon, Euisik; Kwak, Juhyoun

doi:10.1016/j.electacta.2004.07.031

Cited by 17 publications

(13 citation statements)

References 25 publications

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“…A 0.6 T magnetic field, which can be easily obtained, was used to induce solution convection and SWASV, which is the most sensitive and fast voltammetric method employed to achieve higher sensitivity in the presence of dissolved oxygen. The present results show much improved detection limits of Cd 2þ and Pb 2þ over the results from other reports Torsi 2000, 2001;Van Staden and Matoetoe 2000;Wu et al 2003;Clark and Fritsch 2004;Kim et al 2004;Yuan et al 2004). Finally, this method was successfully applied to determinate Cd 2þ and Pb 2þ in real water samples.…”

Section: Introductioncontrasting

confidence: 40%

“…They were widely used for the analysis of cadmium and lead. However, to the best of our knowledge, the detection limits of cadmium and lead achieved by most electroanalytical methods are still in the nanomolar range either for ASV (Van Staden and Matoetoe 2000;Wu et al 2003;Kim et al 2004;Yuan et al 2004), or for CSV Torsi 2000 2001).…”

Section: Introductionmentioning

confidence: 97%

“…The monitoring of cadmium and lead in the environment is increasingly important because of their toxic effects to ecosystem or human itself (Locatelli and Torsi 2000;Jyothi et al 2003;Kim et al 2004). Commonly, the analytical methods for the determination of heavy metal ions are atomic absorption spectrometry (AAS) (Cerny and Bhattacharya 2003), surface plasmon resonance (SPR) (Wu and Lin 2004) and inductively coupled plasma-atomic emission spectrometry (ICP-AES) (Tao and Kumamaru 1995), and X-ray fluorescence (XRF) (Ritschel et al 1999).…”

Section: Introductionmentioning

confidence: 99%

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A Novel Sensitive Method for the Determination of Cadmium and Lead Based on Magneto‐Voltammetry

et al. 2007

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A novel method for the ultratrace determination of Cd 2þ and Pb 2þ based on magneto-voltammetry was developed. In the presence of a low strength magnetic field of 0.6 T, square wave stripping voltammetry (SWSV) of Cd 2þ and Pb 2þ was performed in this determination. A high concentration of redox species Fe 3þ was added to the analytes to generate a large cathodic current during the preconcentration step. A large Lorentz force arising from the flux of net current through the magnetic field resulted in convective solution flow due to magnetohydrodynamics. Then more metal ions deposited on the electrode surface at a faster rate and an enhancement as large as 160% for the stripping peak current was observed. Under the optimal conditions, this method exhibits high sensitivities of 5.67 mA mM 21 for Cd 2þ and 6.98 mA mM 21 for Pb 2þ , over the 1 Â 10 28 -1 Â 10 26 mol l 21 range. Detection limits as low as 9.0 Â 10 210 and 8.6 Â 10 210 mol l 21 for Cd 2þ and Pb 2þ were obtained with a 2 min preconcentration time, respectively. The method was successfully applied to detect Cd 2þ and Pb 2þ in real water samples and the results were in agreement with atomic absorption spectrometry.

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Section: Introductioncontrasting

confidence: 40%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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A Novel Sensitive Method for the Determination of Cadmium and Lead Based on Magneto‐Voltammetry

et al. 2007

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“…Nafion-modified platinum microelectrodes on silicon substrates were used to measure trace lead and cadmium ions in environmental water samples without pre-treatment by SWASV [63].…”

Section: Other Electrode Substrate Materialsmentioning

confidence: 99%

Strategies, Development and Applications of Polymer-Modified Electrodes for Stripping Analysis

Gouveia‐Caridade¹,

Brett

2008

CAC

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Recent progress in polymer modified electrodes for stripping analysis is surveyed, mainly concerned with ionexchange polymer and conducting polymer coatings on mercury thin film electrodes and other solid electrode substrates. Film preparation methods are discussed and applications involving different types of polymer film or polymer film composites illustrated, with emphasis on recent literature published in the last five years.

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“…16,17 The application of square-wave voltammetry in the stripping phase is particularly efficient. 18 The theory of this technique is well developed for the stationary planar electrode covered by thin mercury film, 19 but not for spherical electrodes because of the need to consider the diffusion within the mercury drop. [20][21][22] This problem was investigated for the cathodic reaction, without the accumulation, in our previous paper.…”

Section: Introductionmentioning

confidence: 99%

Theory of Anodic Stripping Square Wave Voltammetry on Spherical Mercury Electrodes

Komorsky‐Lovrić¹,

Lovrić²

2014

Croat. Chem. Acta

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A direct analysis of nanomolar metal ions in environmental water samples with Nafion-coated microelectrodes

Cited by 17 publications

References 25 publications

A Novel Sensitive Method for the Determination of Cadmium and Lead Based on Magneto‐Voltammetry

A Novel Sensitive Method for the Determination of Cadmium and Lead Based on Magneto‐Voltammetry

Strategies, Development and Applications of Polymer-Modified Electrodes for Stripping Analysis

Theory of Anodic Stripping Square Wave Voltammetry on Spherical Mercury Electrodes

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