Chemically modified polymeric resins for high-performance liquid chromatography

Sun, Jeffrey J.; Fritz, James S.

doi:10.1016/0021-9673(90)85180-4

Cited by 41 publications

(6 citation statements)

References 15 publications

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“…Fritz and coworkers [44] demonstrated that -C(CH 3 ) 3 , -CH 2 OH, -COCH 3 , -COCH 2 CH 2 COOH, -CH 2 CN functional groups introduced into PS-DVB resins have an appreciable effect on the retention times and k values obtained in reversed-phase liquid chromatography for the separation of alkyl benzenes and phenols.…”

Section: Functionalized Poly(styrene-divinylbenzene) Particlesmentioning

confidence: 98%

Poly(Styrene‐Divinylbenzene) Based Media for Liquid Chromatography

Huck

Bonn

2005

Chem Eng & Technol

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The latest developments and in particular important synthetic aspects for the preparation of modern poly(styrene-divinylbenzene) (PS-DVB) based liquid chromatography (LC) supports are reviewed. In this context, the chemistry of particular porous and nonporous, functionalized, monolithic, coated silica and more specialized mixed organic PS-DVB media is covered. Special consideration is given to modern approaches such as micro-(l)-HPLC and coating techniques and their most important applications. Synthetic particularities relevant to the corresponding applications are outlined.

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Section: Functionalized Poly(styrene-divinylbenzene) Particlesmentioning

confidence: 98%

Poly(Styrene‐Divinylbenzene) Based Media for Liquid Chromatography

Huck

Bonn

2005

Chem Eng & Technol

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“…This approach was also reported by Yanagihara et al [8] for vinyl alcohol copolymer packings for reversed-phase HPLC. Experiments changing the selectivity of XAD-4 resin (ST-DVB type) by introducing different functional groups into the benzene ring of the copolymer were carried out by Sun and Fritz [9]. This paper presents the results of chemical modification of the copolymer of methacrylic ester of p,p'-dihydroxydiphenylpropane diglycidyl ether and divinylbenzene (MEDDE-DVB), which possesses hydroxyl functional groups.…”

Section: Introductionmentioning

confidence: 99%

Chemical modification of the polymeric sorbent containing hydroxyl functional groups

Gawdzik¹,

Matynia²,

Osypiuk³

1997

Chromatographia

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SummaryDimethyldichlorosilane and stearic acid chloride were used for deactivation of hydroxyl functional groups present in the skeleton of the methacrylic ester of p,p'-dihydroxydiphenylpropane diglycidyl ether-divinylbenzene, porous copolymer used as HPLC packing. The influence of chemical modification on the chromatographic behaviour of the copolymer was studied. To characterize selectivity of the packings, retention indices of five homologous series and test compounds were determined. The data obtained suggest that modification with stearic acid chloride affects both the chemical and porous structure of the copolymer while modification with dimethydichlorosilane changes only the chemical character of the packing.

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“…In some instances no organic solvent at all is used in the SPE of metal ions. 2 The properties of SPE materials are listed below: porous, large surface area; 3 reversible adsorption; 4 pure, low leachable; 5 good chemical stability; 4 good surface contact with sample solution; [6][7][8] high-percentage recoveries. 2 Zeolites, narrowly defined, are porous crystalline alumino silicates having a uniform pore structure framework comprising [SiO4] 4-and [AlO4] 5-tetrahedral units.…”

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confidence: 99%

Atomic Absorption Spectrometric Determination of Trace Amounts of Copper and Zinc after Simultaneous Solid-Phase Extraction and Preconcentration onto Modified Natrolite Zeolite

2006

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This work assesses the use of modified natural natrolite zeolite as an adsorptive material for the separation and preconcentration of trace amounts of ions. In this work we investigated the potential of modified natural natrolite zeolite for the simultaneous separation and preconcentration of trace amounts of copper and zinc ions. We have developed a simple, rapid, selective, sensitive and economical method for the simultaneous separation and preconcentration of trace amounts of copper and zinc in an aqueous medium using 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) as an analytical reagent. The sorption was quantitative in the pH range 7.5 -9.5, whereas quantitative desorption occurred instantaneously with 5.0 mL of 2 mol L -1 nitric acid. Linearity was maintained between 0.05 -6.0 μg mL -1 for copper and 0.02 -1.5 μg mL -1 for zinc in the final solution. Ten replicate determinations of 1.0 μg mL -1 copper and 0.5 μg mL -1 zinc in a mixture gave mean absorbances of 0.1687 and 0.2788 with relative standard deviations of ±1.2% and ±1.3%, respectively. The detection limits were 0.03 ng mL -1 for Cu(II) and 0.006 ng mL -1 for Zn(II) in the original solution (3σbl/m). Different parameters, such as the effect of the pH, flow rate, breakthrough volume and interference of a large number of anions and cations, were studied and the proposed method was used for the determination of these metal ions in water as well as standard samples (e.g. Nippon Keikinzoku Kogyo (NKK) CRM, No. 916 and No. 920 aluminum alloy, National Institute for Environment Studies (NIES) No. 1 pepperbush and NIES No. 2 pond sediment). The determination of these metal ions in standard samples showed that the proposed method has good accuracy (recovery > 97%).

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Chemically modified polymeric resins for high-performance liquid chromatography

Cited by 41 publications

References 15 publications

Poly(Styrene‐Divinylbenzene) Based Media for Liquid Chromatography

Poly(Styrene‐Divinylbenzene) Based Media for Liquid Chromatography

Chemical modification of the polymeric sorbent containing hydroxyl functional groups

Atomic Absorption Spectrometric Determination of Trace Amounts of Copper and Zinc after Simultaneous Solid-Phase Extraction and Preconcentration onto Modified Natrolite Zeolite

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