Effect of the steric accessibility of the exchange site in long-chain quaternary ammonium salts on the anion-exchange extraction of divalent ions

Егоров, В. В.; Рахманько, Е. М.; Pomelenok, E. V.; Okaev, E. B.

doi:10.1134/s0036024406060239

Cited by 6 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Higher quaternary ammonium salts (QAS) proved themselves as promising materials for making anion selective ISEs [11][12][13]. One of their characteristic features has been believed to be their low extraction capacity toward hydrophilic double charged anions (sulfate, selenate, selenite, carbonate etc.)…”

Section: Issn: 2638-1532mentioning

confidence: 99%

A New Molybdate-selective electrode based on Higher quaternary Ammonium Salts

Matveichuk¹

2018

Madridge J Anal Sci Instrum

View full text Add to dashboard Cite

Membrane composition of molybdate-selective electrodes based on higher quaternary ammonium salts has been optimized. It is found that the best analytical characteristics of electrodes are based on 3,4,5-tris-dodecyloxybenzyl) tetraoxyethyltrimethyl ammonium in chloride form (5% w/w) with the addition in membranes of the solvating additive (neutral carrier) − p-heptyl ester 4-trifluoroacetylbenzoic acid (TFABAHE, 20% w/w). Their analytical characteristics: low detection limits (1•10 −6 mol/l); logarithm selectivity coefficients relative to interfering chloride -1,-4, sulfate -0.8, bromide -0.7, tungstate -0.9 ions; working range of pH (8.5−9.5); slope of the electrode function (24.4 mV/decade) are determined. Sodium molybdate aqueous solutions has been studied with FT-IR spectrometry method at various pH. In sodium molybdate solutions at pH greater than 8.0-8.5 hydrolytic processes are mild. However, using a molybdate-selective electrodes is better to use freshly prepared solutions. This increases the reproducibility of the experimental results. The proposed electrode was employed to determine of molybdate ions of model water samples using the calibration plot method.

show abstract

Section: Issn: 2638-1532mentioning

confidence: 99%

A New Molybdate-selective electrode based on Higher quaternary Ammonium Salts

Matveichuk¹

2018

Madridge J Anal Sci Instrum

View full text Add to dashboard Cite

show abstract

“…[5][6][7][8] Based on much research into the quaternary ammonium salts and quaternary phosphonium salts' physical and chemical properties, their bactericidal mechanism, inuence factor, and the advantages of their low side effects, have been widely acknowledged, thus quaternary ammonium salt disinfectant and quaternary phosphonium salt disinfectant have been widely used in daily routine, healthcare, food and many other elds. [9][10][11][12] Additionally, it has been found that with long chain alkyl quaternary ammonium salts and quaternary phosphonium salt groups, the antimicrobial properties were enhanced. There are reports of quaternary ammonium salts detection using the ion chromatography method and [13][14][15][16] mass spectrometry method.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of tetrabutyl ammonium and tetrabutyl phosphonium in environmental water samples by solid phase extraction and ion chromatography

Liu

2016

Anal. Methods

View full text Add to dashboard Cite

show abstract

Estimation of Ion‐Pairing Constants in Plasticized Poly(vinyl chloride) Membranes Using Segmented Sandwich Membranes Technique

et al. 2009

View full text Add to dashboard Cite

Segmented sandwich membrane method was used to determine ion-pairing constants for four cationic sites: tris-(2,3,4-dodecyloxy)benzenetrimethylammonium, tris-(2,3,4-dodecyloxy)benzenedimethyloctylammonium, tris-(2,3,4-dodecyloxy)benzenemethyldioctylammonium, and dimethyldioctadecylammonium with chloride, bromide, nitrate, benzene sulfonate, trichloroacetate, thiocyanate, perchlorate and picrate, as well as ion-pairing constants for two anionic sites: tetraphenylborate and tris-(2,3,4-octyloxy)benzenesulfonate with dimedrol, quinine, anapriline, and amantadine cations in poly(vinyl chloride) membranes plasticized with 2-nitrophenyl octyl ether. Ion association constants of anions with quaternary ammonium sites regularly increase from picrate to chloride along with reduction of the anion radius and with improvement of site exchanger center steric accessibility. Ion association constants of amine cations with tris-(2,3,4-octyloxy)benzenesulfonate are several orders higher than those with tetraphenylborate and regularly increase from tertiary amine to primary one.

show abstract

Effect of the steric accessibility of the exchange site in long-chain quaternary ammonium salts on the anion-exchange extraction of divalent ions

Cited by 6 publications

References 8 publications

A New Molybdate-selective electrode based on Higher quaternary Ammonium Salts

A New Molybdate-selective electrode based on Higher quaternary Ammonium Salts

Simultaneous determination of tetrabutyl ammonium and tetrabutyl phosphonium in environmental water samples by solid phase extraction and ion chromatography

Estimation of Ion‐Pairing Constants in Plasticized Poly(vinyl chloride) Membranes Using Segmented Sandwich Membranes Technique

Contact Info

Product

Resources

About