Continuous Deaeration and Polarograpic Analysis of Column Effluents

Blaedel, W. J.; Todd, John Welhoff

doi:10.1021/ac60143a032

Cited by 49 publications

(16 citation statements)

References 8 publications

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“…The partial pressure of particular gases above the liquid may be reduced The method has been used widely in polaroqraphic studies and different through columns with particulate packings (19) or in columns consisting of a narrow tube (20). where turbulent flow is ensured at relatively low flow rates.…”

Section: Methods Have Been Described For the Continuous Removal Of Oxmentioning

confidence: 99%

Deoxygenation, Deaeration and Degassing: A Survey and Evaluation of Methods

Luyckx

Ceulemans

1987

Bulletin des Soc Chimique

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and classified according to their working principles. Consideration of these working principles reveals some inherent limitations of certain techniques and it may be concluded that the different methods complement each other in a number of aspects. Proton spin-lattice relaxation time measurements and polarographic analyses are used for evaluation of different deoxygenation methods.It is concluded that for most purposes the different methods yield satisfactory results if applied properly and within the inherent limitations of the techniques. When the presence of oxygen is very critical and its concentration must be reduced to very small amounts, a combination of methods appears advisable.Techniques for the removal of dissolved gases from liquids are reviewed

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Section: Methods Have Been Described For the Continuous Removal Of Oxmentioning

confidence: 99%

Deoxygenation, Deaeration and Degassing: A Survey and Evaluation of Methods

Luyckx

Ceulemans

1987

Bulletin des Soc Chimique

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“…0 One of the most important impurities in the reduction mode is dissolved oxygen [47]. When dissolved oxygen is removed from the analyte sample by bubbling pure nitrogen through the sample solution, the current signal disappears totally for a blank electrolyte-free solution analysis.…”

Section: Batch Injection Analysismentioning

confidence: 99%

“…0 The use of electrolyte-free sample solution is allowed, and recommended for further experiments, in the BIA/amperometric operation, as observed by Wang and Taha [39], since blank currents are greater for electrolyte-containing samples than that of electrolyte-free samples. 0 One of the most important impurities in the reduction mode is dissolved oxygen [47]. When dissolved oxygen is removed from the analyte sample by bubbling pure nitrogen through the sample solution, the current signal disappears totally for a blank electrolyte-free solution analysis.…”

Section: Application To Cation Analysismentioning

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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“…Early flow-through detectors with a DME had elaborate designs and a large dead volume [17, [66][67][68]. The growing interest in HPLC during the 1970s led to additional requirements for detector construction and performance.…”

Section: Flow-through Detectorsmentioning

confidence: 99%