Automated segmented flow electrochemical analyzer

Jayaweera, Palitha; Ramaley, Louis

doi:10.1021/ac00193a020

Cited by 6 publications

(2 citation statements)

References 35 publications

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“…The method most often used consists in an intensive purging of the flowing liquid with an inert gas [50, 511. Some authors used a deoxygenator made of a porous PTFE tube that allows oxygen to diffuse through it [52]. Oxygen can also be removed by chemical reduction by passing the solution through a column packed with zinc particles [53].…”

Section: E Pmentioning

confidence: 99%

Cation determination in aqueous solution using the methyl viologen‐doped zeolite‐modified carbon paste electrode

Walcarius¹,

Lumberts²,

Derouane³

1995

Electroanalysis

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Methyl viologen (MV") initially exchanged in a zeolite Y modified carbon paste electrode (ZMCPE) is reduced after being exchanged for the supporting electrolyte cation. The use of an electrolyte cation that cannot enter zeolite channels to a great extent does not give rise to appreciable currents while a non-size-excluded cation allows liberating MV2+ from zeolite particles and their subsequent reduction at the electrode-solution interface. Following those observations, the MV2+-based ZMCPE has been used for the constant potential (-0.85 V) amperometric detection of nonreducible:, non-size-excluded cations in aqueous medium. The performance of this electrode was investigated in both batch injection analysis (BIA) and flow injection analysis (FIA). The great advantage of BIA coupled to the amperometric detection is the ability to use electrolyte-free sample solutions. For FIA experiments, dissolved oxygen was eliminated by using an electrochemical scrubber containing porous carbon electrodes. With the MV*+-doped ZMCPE, alkali and alkali-metal cations can be detected at the submillimolar level for both batch and flow injection analysis.

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Section: E Pmentioning

confidence: 99%

Cation determination in aqueous solution using the methyl viologen‐doped zeolite‐modified carbon paste electrode

Walcarius¹,

Lumberts²,

Derouane³

1995

Electroanalysis

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show abstract

“…Fast scanning and pulsed voltammetric procedures also give multicomponent information. For example, Cd(I1) and Pb(I1) were determined using pulsed voltammetric analysis in a CFA system with stopped-flow analysis in the detector flowcell [128].…”

Section: Multicomponent Determinationmentioning

confidence: 99%

Advances in Flow Analysis – Instrumentation and its Application in Environmental Analysis

Berman¹

1995

Quality Assurance in Environmental Monitoring

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Anodic stripping coulometry with collection for absolute trace analysis of lead, using flow-through electrochemical cells with porous working electrodes

Beinrohr

Németh

Tschöpel

et al. 1992

Fresenius J Anal Chem

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Automated segmented flow electrochemical analyzer

Cited by 6 publications

References 35 publications

Cation determination in aqueous solution using the methyl viologen‐doped zeolite‐modified carbon paste electrode

Cation determination in aqueous solution using the methyl viologen‐doped zeolite‐modified carbon paste electrode

Advances in Flow Analysis – Instrumentation and its Application in Environmental Analysis

Anodic stripping coulometry with collection for absolute trace analysis of lead, using flow-through electrochemical cells with porous working electrodes

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