Potentiometric determination of potassium

Prokopov, Theodore S.

doi:10.1021/ac60301a036

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1972

1989

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Cited by 6 publications

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“…A higher volume of ethyl alcohol interfered with the indicator electrode system because of changes in solution conductance. According to Prokopov (8), mercury(II) decomposes sodium tetraphenylboron. Further, only NH4+, AgT, T1+, Rb + ions and anions interfer with the potassium determination in dilute nitric acid medium.…”

Section: Resultsmentioning

confidence: 99%

Determination of potassium by means of the Cotlove chloridometer

Ferren¹,

Cucco²

1974

Anal. Chem.

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Section: Resultsmentioning

confidence: 99%

Determination of potassium by means of the Cotlove chloridometer

Ferren¹,

Cucco²

1974

Anal. Chem.

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Comments on the potentiometric titration of potassium with tetraphenylborate

Selig

1987

Z. Anal. Chem.

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Potentiometric titration of long chain quaternary ammonium compounds using sodium tetraphenyl borate

Wang¹,

Metcalfe²,

Donkerbroek

et al. 1989

J Americ Oil Chem Soc

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Current methods for determining the activity of long chain quaternary ammonium compounds {QACS) are based either on dye partition, titration, or colorimetric analysis. The two major disadvantages of these methods are the disparity of partition coefficients among differently constituted QACS and the difficulty in detecting visual end points. Some potentiometric titration methods for QACS have been reported in the literature. However, back titration techniques, as well as complicated electrode systems, are generally involved.A new potentiometric titration system is presented which uses aqueous sodium tetraphenylborate {TPB) solution as a titrant and a platinum-platinum electrode system to detect the end point. Standard potentiometric titration instruments may be used for this method. This new potentiometric method is superior in precision and accuracy to visual {colorimetric) methods.

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Potentiometric determination of potassium

Cited by 6 publications

References 5 publications

Determination of potassium by means of the Cotlove chloridometer

Determination of potassium by means of the Cotlove chloridometer

Comments on the potentiometric titration of potassium with tetraphenylborate

Potentiometric titration of long chain quaternary ammonium compounds using sodium tetraphenyl borate

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