Application of pure silica gel as cation-exchange stationary phase in lon chromatography with indirect photometric detection for common mono-and divalent cations using aromatic monoamines as eluents

Ohta, Kazutoku; Kusumoto, Keiji; Takao, Yoshihiro; Ohashi, Masayoshi; Takeuchi, Toyohide

doi:10.1007/bf02492321

Cited by 9 publications

(4 citation statements)

References 20 publications

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“…Ionizable molecules that are to be purified compete with these counterions for binding to the immobilized charges on the stationary phase. These ionizable molecules are retained based on their charges 11,13 .…”

Section: Ion-exchange Chromatographymentioning

confidence: 99%

Untitled

2019

IJPSR

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Background: In research, the analyst gets samples for separation ranging from a simple mixture of two or more synthetic drugs to complex ones obtained from biological, environmental or industrial processes. Chromatography has extensively used in such separations where component separation based upon their affinity towards stationary phase and mobile phase. 90% of the stationary phases available use silica gel either in its original form or with advanced surface properties. Objective: To furnish the reader with detailed information on silica gel, the functional moiety in chromatography, from its synthesis, properties, types, modification of surface characteristics and applications. We aim to focus on novel silica materials evolved recently and getting attention due to their performance.

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Section: Ion-exchange Chromatographymentioning

confidence: 99%

Untitled

2019

IJPSR

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“…WCX (the majority functional groups of WCX are carboxylate groups) is superior to strong cation exchanger since hydronium has stronger affinity with WCX relative to strong cation exchanger, then leading to strong elution ability toward metal cations. Bare silica itself can serve as a WCX since its surface is negatively charged owing to the dissociation of silanol groups [7]. The main drawbacks of bare silica as WCX are limited capacity and selectivity.…”

Section: Introductionmentioning

confidence: 99%

A weak cation exchanger by encapsulating silica with maleic anhydride–modified polyvinyl alcohol

Liu

Yang

Geng

et al. 2020

J of Separation Science

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A novel weak cation exchanger is described by encapsulating silica with a (or multiple) layer(s) of maleic anhydride-modified polyvinyl alcohol coating(s). The preparation method is facile and fast, which is simply performed by dipping silica particles into maleic anhydride-modified polyvinyl alcohol solution as-synthesized, then filtering and curing thermally, and finally generating a thin coating onto silica particles. Multiple layers of maleic anhydride-modified polyvinyl alcohol coatings can be generated by repeating above steps, offering an easy way to manipulate the capacity. The obtained weak cation exchanger demonstrated high separation efficiency and good selectivity toward common inorganic cations, for example, high plate count of 81 000 per meter was obtained for NH 4 + . Simultaneous separation of alkali and alkaline earth metals could be achieved within 14 min under isocratic conditions. K E Y W O R D Sion chromatography, maleic anhydride, polyvinyl alcohol, surface polymerization, weak cation exchanger 1474

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“…Zhang et al (2006) characterized of phenol-liquefied triploid clones of Populus tomentosa and Cunninghamia lanceolata by Fourier transform infrared spectroscopy (FTIR), 1 H NMR, 13 C NMR, 31 P NMR and scanning electron microscope (SEM). During separation, the polarity of the eluent must be very sensitive in order to optimize the separation of compounds (Ohta et al, 2002). And the sorbent, the polarity of mobile phase and the sample must all be considered in this process (Stella et al, 2001;Cebolla et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Separation of liquefied product of Salix psammophila by column chromatography and structure analysis of its components

Gao

Huang

2008

For. Stud. China

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The liquefied product of Salix psammophila wood was separated by thin-layer chromatography (TLC) and column chromatography, and its structure was identified by nuclear magnetic resonance (NMR) spectra in our study. The separation result indicates that the sample of liquefied S. psammophila contained at least two categories of components. The structure of the main components was guaiacyl C-1, C-2 of the hydroxyphenyl propane, i.e., the aromatic nucleus protons of lignin. Degradation and polycondensation reactions occurred when the S. psammophila wood was liquefied in phenol. Polycondensation reactions occurred among the depolymerization products from cellulose, the aromatic depolymerization products from lignin and the products of the displacement reactions between phenoxide ion and cellulose.

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Application of pure silica gel as cation-exchange stationary phase in lon chromatography with indirect photometric detection for common mono-and divalent cations using aromatic monoamines as eluents

Cited by 9 publications

References 20 publications

Untitled

Untitled

A weak cation exchanger by encapsulating silica with maleic anhydride–modified polyvinyl alcohol

Separation of liquefied product of Salix psammophila by column chromatography and structure analysis of its components

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