Voltammetry without supporting electrolyte using a platinum working electrode supported on an ion exchange membrane

Kaaret, Thomas W.; Evans, Dennis H.

doi:10.1021/ac00158a011

Cited by 49 publications

(33 citation statements)

References 35 publications

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“…The polymer peaks were found insignificant at the foot of analyte peak. No supporting electrolyte was needed in the analyte solution (in the cell) because ions consumed or produced at the electrode could be transported through the solid polymer electrolyte rather than the analyte solution itself (Kaaret and Evans, 1988). However, the presence of sodium hydroxide as a supporting electrolyte with the concentration as low as 5 × 10 −4 M in the cell content had no interferences toward Crea rebinding in the present study.…”

Section: Affinity Of the Creatine-imprinted Polymer Mipmentioning

confidence: 80%

Imprinted polymer-modified hanging mercury drop electrode for differential pulse cathodic stripping voltammetric analysis of creatine

Lakshmi

Sharma

Prasad

2007

Biosensors and Bioelectronics

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Section: Affinity Of the Creatine-imprinted Polymer Mipmentioning

confidence: 80%

Imprinted polymer-modified hanging mercury drop electrode for differential pulse cathodic stripping voltammetric analysis of creatine

Lakshmi

Sharma

Prasad

2007

Biosensors and Bioelectronics

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“…In view of the possible anionic oxidation of supporting electrolytes at preanodized electrode and high catalytic activity of pchloranil incorporated in MIP film towards oxidation of Cre [11], the use of any supporting electrolyte was actually avoided in the present investigation. In fact supporting electrolytes have no role because ions consumed or produced in electrode process are reportedly transported primarily through the polymer film rather than the bulk solution [28] and therefore, observed current signals was actually devoid of any capacitive contribution. Moreover, active oxide film containing electron-transfer mediating groups such as À C ¼ O and À C À OH on the graphite surface owing to preanodization process [29] are suffice to activate electrode process.…”

Section: Voltammetric Behaviormentioning

confidence: 99%

Development of a Creatinine Sensor Based on a Molecularly Imprinted Polymer‐Modified Sol‐Gel Film on Graphite Electrode

2008

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An electrochemical creatinine sensor based on a molecularly imprinted polymer (MIP)-modified sol-gel film on graphite electrode was developed. The surface coating of MIP over sol-gel was advantageous to obtain a porous film with outwardly exposed MIP cavities for unhindered selective rebinding of creatinine from aqueous and biological samples. A fast differential pulse, cathodic stripping voltammetric response of creatinine can be obtained after being preanodized the sensor in neutral medium containing appropriate amount of creatinine at þ 1.8 V versus SCE for 120 s. A linear response over creatinine concentration in the range of 1.23 to 100 mg mL À1 was exhibited with a detection limit of 0.37 mg mL À1 (S/N ¼ 3).

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“…The detector cell (Figure 1 (1,2) two parts of the detector body, (3) spe membrane, (4) auxiliary electrolyte solution, (5,6) reference and auxiliary electrodes, (7) working wire electrode, (8) electrical contact to the working electrode, (9) Plexiglas cylinder, (1 0) fixing screw, (11) inlet capillary, (12) seal, (13) fixing screw, (14) outlet.…”

Section: Jyxpeyltmenzmentioning

confidence: 99%

A solid polymer electrolyte amperometric detector for FIA and HPLC with mobile phases of low conductivity

Loub¹,

Opekar²,

Pacáková³

et al. 1992

Electroanalysis

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An amperometric cell with a small platinum wire working electrode, a submicroliter geometric volume, and a solid polymer electrolyte (Nafion) was constructed and tested. The cell permits sensitive and reliable detection even in mobile phases of negligible electric conductivity, (e.g., distilled water or nonpolar organic solvents). The sensitivity is substantially higher than that attained with similar cells containing large-area working electrodes; typical limits of detection amount to analyte concentrations between lo-' and 10" moVdm3, corresponding to subnanogram amounts in common HPLC sample volumes. The detector response exhibits satisfactory linearity, a linear dynamic range of at least three concentration decades, and a good precision, with relative standard deviations of 1 to 5%. This cell substantially widens the possibilities of amperometric detection, permitting direct application, for example, to normal-phase HPLC or to methods with programmed composition of the mobile phase (gradient elution).

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Voltammetry without supporting electrolyte using a platinum working electrode supported on an ion exchange membrane

Cited by 49 publications

References 35 publications

Imprinted polymer-modified hanging mercury drop electrode for differential pulse cathodic stripping voltammetric analysis of creatine

Imprinted polymer-modified hanging mercury drop electrode for differential pulse cathodic stripping voltammetric analysis of creatine

Development of a Creatinine Sensor Based on a Molecularly Imprinted Polymer‐Modified Sol‐Gel Film on Graphite Electrode

A solid polymer electrolyte amperometric detector for FIA and HPLC with mobile phases of low conductivity

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