Vitamin B1 ion-selective microelectrode based on a liquid-liquid interface at the tip of a micropipette

Huang, Bo; Yu, Bazhang; Li, Peibiao; Jiang, Min; Bi, Yang; Wu, Shufang

doi:10.1016/0003-2670(95)00217-n

Cited by 25 publications

(9 citation statements)

References 21 publications

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“…Beni et al [104] showed that electrodeposition of the Se onto the Au electrodes resulted in the irreversible formation of the SeAu alloy limiting the use of the micro-electrode arrays in time. [87,111], propranolol [91], neurotransmitters such as acetylcholine [88] and choline [89], heavy metals such as Cd 2+ [112], Vitamin B1 [113] and polysaccharide such as heparin [114]. Most of the species detected by stripping analysis are cationic and hence ASV is the most commonly used method.…”

Section: Ii4 Optimation Of the Analytical Performances Of Micro-intmentioning

confidence: 99%

Stripping voltammetry at micro-interface arrays: A review

Herzog

Beni

2013

Analytica Chimica Acta

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In this article, a comprehensive overview of the most recent developments in the field of stripping voltammetry at regular micro-interfaces (both solid-liquid and liquid-liquid interfaces) is presented. This review will report on the most conventional arrays of metallic micro-electrodes but also on the rapidly growing field of electrochemistry at arrays of micro-interfaces between two immiscible electrolyte solutions (μITIES). The main fabrication methods, together with some design considerations and diffusion phenomena at such interfaces are discussed. Main applications of micro-interface arrays are presented including heavy metals detection at micro-electrode arrays and detection of organic molecules (amino acids, vitamins, peptides and drugs) at the μITIES. Stripping analysis at micro-interface arrays is suitable for the detection of analytes in several real media including water, soil extracts and biological fluids (blood and saliva) with high specificity, sensitivity (detection limits of nM, ppb level) and reliability. Stripping analysis at μITIES and micro-electrode arrays are two complementary approaches that have the advantages of being cost effective, simple to use and easily adaptable to field measurement.

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Section: Ii4 Optimation Of the Analytical Performances Of Micro-intmentioning

confidence: 99%

Stripping voltammetry at micro-interface arrays: A review

Herzog

Beni

2013

Analytica Chimica Acta

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“…In ITSV, an aqueous analyte ion is potentiostatically preconcentrated into a water-immiscible organic phase and then voltammetrically stripped to yield an enhanced current response. ITSV was successfully applied for relatively lipophilic ions such as acetylcholine [120, 121], vitamin B1 [122], various protonated amines [123], tetraalkylammoniums [124–126], anionic surfactants [126, 127], and β -blocker propranolol [128, 129]. In addition, various ionophores were employed to enable ITSV of highly hydrophilic ions such as alkaline earth metal ions [130] and oligopeptides [131].…”

Section: It Stripping Voltammetry For Trace Analysismentioning

confidence: 99%

Electrochemical sensing and imaging based on ion transfer at liquid/liquid interfaces

Amemiya

Kim

Izadyar

et al. 2013

Electrochimica Acta

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Here we review the recent applications of ion transfer (IT) at the interface between two immiscible electrolyte solutions (ITIES) for electrochemical sensing and imaging. In particular, we focus on the development and recent applications of the nanopipet-supported ITIES and double-polymer-modified electrode, which enable the dynamic electrochemical measurements of IT at nanoscopic and macroscopic ITIES, respectively. High-quality IT voltammograms are obtainable using either technique to quantitatively assess the kinetics and dynamic mechanism of IT at the ITIES. Nanopipet-supported ITIES serves as an amperometric tip for scanning electrochemical microscopy to allow for unprecedentedly high-resolution electrochemical imaging. Voltammetric ion sensing at double-polymer-modified electrodes offers high sensitivity and unique multiple-ion selectivity. The promising future applications of these dynamic approaches for bioanalysis and electrochemical imaging are also discussed.

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“…The preconcentration effect appears promising for determination of ions at very low concentration levels. Using a similar technique, Huang et al determined vitamin B 1 down to 4.6610 À6 M in aqueous solution with a linear range of 5610 À5 to 1610 À3 M [37]. Theoretically, the detection limit of stripping analysis is determined by the ratio of the volumes of the outer solution and the ®lling solution inside the pipette, and this technique is potentially useful for measurements of very low ( 1 nM) concentrations.…”

Section: Micro-ities As Sensorsmentioning

confidence: 99%

Electrochemistry at Microscopic Liquid-Liquid Interfaces

Liu

Mirkin

2000

Electroanalysis

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A significant progress in studies of electrochemical processes occurring at the interface between two immiscible electrolyte solutions (ITIES) over the last decade is due to the development of a number of new spectroscopic and electrochemical techniques. This review is focused on microelectrochemical approaches to probing charge transfer processes and coupled homogeneous chemical reactions at the ITIES. Both theoretical and experimental aspects of electrochemical experiments with the two most important types of the micro‐ITIES, i.e., micropipettes and microholes, will be considered along with the more recently introduced θ‐pipettes and nanopipette electrodes. The surveyed applications include kinetic studies of ion and electron transfers, sensors, and electrochemical imaging.

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Vitamin B1 ion-selective microelectrode based on a liquid-liquid interface at the tip of a micropipette

Cited by 25 publications

References 21 publications

Stripping voltammetry at micro-interface arrays: A review

Stripping voltammetry at micro-interface arrays: A review

Electrochemical sensing and imaging based on ion transfer at liquid/liquid interfaces

Electrochemistry at Microscopic Liquid-Liquid Interfaces

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