Separations of Corticosteroids Using Electrochemically Modulated Liquid Chromatography:  Selectivity Enhancements at a Porous Graphitic Carbon Stationary Phase

Ting, En Yi; Porter, Marc D.

doi:10.1021/ac960880t

Cited by 43 publications

(29 citation statements)

References 19 publications

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“…In the current analytical chemical literature, selectivity is very often expressed in combination with words such as adjustment [12], tuning [13], optimization [14], predetermined [15], enhancement [16,17], and coefficients [18,19], as well as selective enrichment [20,21]. The use of these expressions indicates that selectivity is regarded as something that can be graded.…”

Section: Expressing Selectivitymentioning

confidence: 99%

Selectivity in analytical chemistry (IUPAC Recommendations 2001)

Vessman

Stefan

Staden

et al. 2001

Pure and Applied Chemistry

244

122

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Republication or reproduction of this report or its storage and/or dissemination by electronic means is Selectivity in analytical chemistry (IUPAC Recommendations 2001)Abstract: The correct use of the term "selectivity" and its clear distinction from the term "specificity" are discussed. A definition of selectivity is given, and it is recommended that the use of this term be promoted and that the use of the term "specificity" be discouraged.

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Section: Expressing Selectivitymentioning

confidence: 99%

Selectivity in analytical chemistry (IUPAC Recommendations 2001)

Vessman

Stefan

Staden

et al. 2001

Pure and Applied Chemistry

244

122

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“…These materials show some superior characteristics over conventional SPE materials, such as alkyl-bonded silica. Functionalized polymeric sorbents, 11,12 highly cross-linked polymers, [13][14][15] graphited carbon black [16][17][18] and molecular imprinted polymers (MIPs) [19][20][21] are examples of such materials that can offer high efficiency and good recoveries in extracting polar compounds.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of β-Cyclodextrin Bonded Silica as a Selective Sorbent for the Solid-Phase Extraction of 4-Nitrophenol and 2,4-Dinitrophenol

Feng

et al. 2003

ANAL. SCI.

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A β-cyclodextrin bonded silica was synthesized by using a convenient method, and was evaluated as a selective sorbent for the solid-phase extraction of 4-nitrophenol and 2,4-dinitrophenol. When double-distilled water was used as the sample matrix, the sorbent showed a strong capacity to adsorb 4-nitrophenol and 2,4-dinitrophenol; the recoveries were found to be 96% and 99%, respectively, with a 1 L water sample. The selectivity of the sorbent was investigated by using a washing step with methanol. Most of the phenols were washed out with 5 mL of methanol, while 4-nitrophenol and 2,4-dinitrophenol still gave recoveries of 94% and 90%. The solution for efficiently eluting the analytes was optimized and the effect of the inorganic salt on the extraction was examined. In order to investigate the potentiality of the sorbent in dealing with real water samples, water from Donghu lake (Wuhan, China) spiked with nine phenolic compounds at microgram per liter levels were preconcentrated on this cartridge.

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“…159 Porous graphitic stationary phases were also used for the separation of corticosteroids especially if a voltage is applied to the column, while making use of its electric conductivity. 160 This technique, termed "electrochemically modulated liquid chromatography", was successfully coupled on-line with electrospray MS. 161 Several papers have been published dealing with the mobile phase selection and optimation in the HPLC analysis of steroids hormone drugs. The selectivity of the separation in RP-HPLC was improved by using ternary systems containing methyl or ethyl acetate as demonstrated by the separation of 9α-fluoroprednisolone acetate from its impurities.…”

Section: ·4 High-performance Liquid Chromatography (Hplc) Andmentioning

confidence: 99%

Recent Advances in the Analysis of Steroid Hormones and Related Drugs

Gǒrög¹

2004

ANAL. SCI.

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Separations of Corticosteroids Using Electrochemically Modulated Liquid Chromatography: Selectivity Enhancements at a Porous Graphitic Carbon Stationary Phase

Cited by 43 publications

References 19 publications

Selectivity in analytical chemistry (IUPAC Recommendations 2001)

Selectivity in analytical chemistry (IUPAC Recommendations 2001)

Evaluation of β-Cyclodextrin Bonded Silica as a Selective Sorbent for the Solid-Phase Extraction of 4-Nitrophenol and 2,4-Dinitrophenol

Recent Advances in the Analysis of Steroid Hormones and Related Drugs

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