Cyclodextrins: a versatile tool in separation science

Schneiderman, Eva; Stalcup, Apryll M.

doi:10.1016/s0378-4347(00)00057-8

Cited by 330 publications

(143 citation statements)

References 121 publications

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“…Among them, the behavior patterns of a-, b-, and c-CDs are similar to SDS; therefore, they are often used in CE separation [21]. In the present MEKC separation, a-, b-, and c-CDs were studied as modifiers.…”

Section: Separation Of Pahsmentioning

confidence: 99%

Comparison of two capillary electrophoresis online stacking modes by analysis of polycyclic aromatic hydrocarbons in airborne particulates

Song

Peng

Lin

2006

J of Separation Science

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Original PaperComparison of two capillary electrophoresis online stacking modes by analysis of polycyclic aromatic hydrocarbons in airborne particulates Naphthalene, fluorene, pyrene, anthracene, phenanthrene, and chrysene were successfully separated by CD-modified MEKC (CD-MEKC) using 20 mM borate (pH 9.0) containing 90 mM SDS and 75 mM b-CD. Two online stacking methods, i. e., sweeping and field-enhanced sample injection (FESI), were explored to enhance the detection sensitivity. The influences of some crucial parameters in sweeping and FESI procedures were investigated. For FESI method, a plug of water and low-conductivity sample matrix was used to increase the stacking efficiency. Compared with the sweeping method, FESI can increase the sensitivity in the range of 10 -20-fold. The proposed method was used for the analysis of polycyclic aromatic hydrocarbons in airborne particulates.

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Section: Separation Of Pahsmentioning

confidence: 99%

Comparison of two capillary electrophoresis online stacking modes by analysis of polycyclic aromatic hydrocarbons in airborne particulates

Song

Peng

Lin

2006

J of Separation Science

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“…24 The derivatization of the hydroxyl groups of CD with various functional groups improved the solubility and increased the specific interactions between the CD and enantiomers. The resolution of neutral compounds is possible by using charged CD derivatives.…”

Section: Resultsmentioning

confidence: 99%

Enantioselective analysis of omeprazole in pharmaceutical formulations by chiral high-performance liquid chromatography and capillary electrophoresis

Bonato¹,

Paias²

2004

J. Braz. Chem. Soc.

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Foram desenvolvidos dois métodos sensíveis e simples baseados em cromatografia líquida de alta eficiência e eletroforese capilar (EC) para a análise enantiosseletiva de omeprazol em formulações. O omeprazol racêmico e (S)-omeprazol foram extraídos de comprimidos disponíveis comercialmente usando metanol:NaOH 2,5 mol L -1 (90:10, v/v). A separação quiral do omeprazol por HPLC foi obtida empregando a coluna CHIRALPAK AD, fase móvel composta por hexano:etanol (40:60, v/v) e detecção em 302 nm. A resolução dos enantiômeros do omeprazol por EC foi obtida empregando β-ciclodextrina sulfatada (3% em tampão fosfato, 20 mmol L -1 , pH 4.0) e detecção em 202 nm.We developed two sensitive and simple assay procedures based on high-performance liquid chromatography and capillary electrophoresis (CE) for the enantioselective analysis of omeprazole in pharmaceutical formulations. Rac-omeprazole and (S)-omeprazole were extracted from commercially available tablets using methanol:NaOH 2.5 mol L -1 (90:10, v/v). Chiral HPLC separation of omeprazole was obtained on a CHIRALPAK AD column using hexane:ethanol (40:60, v/v) as the mobile phase and detection at 302 nm. The resolution of omeprazole enantiomers by CE was carried out using 3% sulfated β-cyclodextrin in 20 mmol L -1 phosphate buffer, pH 4.0 and detection at 202 nm.

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“…Ethanol was used to improve the solubility of LMA in water, a prime requirement for emulsion polymerization. The effect of third monomer on the overall emulsion terpolymerization of LMA and MMA was also investigated in terms of time-conversion graphs, morphology and size of particles [7]. Preparation of PLMA homopolymer latex particles by suspension polymerization using poly (vinyl alcohol) (PVA) as steric stabilizer was also reported [8].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Epoxide Functional Hydrophobic Composite Polymer Particles by Suspension Polymerization and Subsequent Doping with Fe<sup>3</sup>O<sup>4</sup> Nanoparticles

Shabnam¹,

Rahman²,

Miah³

et al. 2017

J. Sci. Res.

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This investigation described a simple three-step process for the fabrication of micrometersized magnetic composite polymer particles. This composite polymer particle consisted of crosslinked hydrophobic poly(lauryl methacrylate-divinyl benzene) (P(LMA-DVB)) core, prepared by suspension polymerization. Then, P(LMA-DVB) copolymer core particles were coated with poly(glycidyl methacrylate) (PGMA) by seeded polymerization to introduce epoxide functionality. Finally, P(LMA-DVB)/PGMA composite particles were doped with iron oxide (Fe 3 O 4 ) nanoparticles following in situ co-precipitation of Fe 2+ and Fe 3+ from their alkali aqueous solution. The presence of strained oxirane ring derived from PGMA segment present at the surface is expected to induce high affinity towards precipitated magnetic Fe 3 O 4 nanoparticles. The compositional structure of P(LMA-DVB)/PGMA/Fe 3 O 4 composite polymer particles was confirmed by Fourier Transform IR (FTIR), electron microscopy, thermogravimetry (TG), X-ray diffraction (XRD) and energydispersive X-ray (EDX).

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Cyclodextrins: a versatile tool in separation science

Cited by 330 publications

References 121 publications

Comparison of two capillary electrophoresis online stacking modes by analysis of polycyclic aromatic hydrocarbons in airborne particulates

Comparison of two capillary electrophoresis online stacking modes by analysis of polycyclic aromatic hydrocarbons in airborne particulates

Enantioselective analysis of omeprazole in pharmaceutical formulations by chiral high-performance liquid chromatography and capillary electrophoresis

Fabrication of Epoxide Functional Hydrophobic Composite Polymer Particles by Suspension Polymerization and Subsequent Doping with Fe<sup>3</sup>O<sup>4</sup> Nanoparticles

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