Search Results - "Pesek, Joseph J"

Silica Hydride: A Separation Material Every Analyst Should Know About by Pesek, Joseph J, Matyska, Maria T

“…This review describes the development, special features and applications of silica hydride-based stationary phases for HPLC. The unique surface of this…”
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Application of a Cholesterol‐Based Stationary Phase for the Analysis of Brevetoxins by Pesek, Joseph J., Matyska, Maria T., Hiltz, Tanya, McCall, Jennifer

“…A high‐performance liquid chromatography protocol for the analysis of brevetoxins has been developed using a silica hydride‐based cholesterol column…”
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Chromatographic characterization of a silica hydride‐based amide stationary phase by Pesek, Joseph J., Matyska, Maria T., Tardiff, Emma, Hiltz, Tanya

“…An amide phase based on a porous silica hydride support material is tested for retention characteristics in both the reversed‐phase and aqueous normal‐phase…”
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Ammonium fluoride as a mobile phase additive in aqueous normal phase chromatography by Pesek, Joseph J., Matyska, Maria T.

“…•NH4F is tested as a mobile phase additive in aqueous normal phase chromatography.•NH4F enhances MS sensitivity in the negative ion mode.•NH4F also enhances MS…”
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Enantiomers separation by nano-liquid chromatography: Use of a novel sub-2μm vancomycin silica hydride stationary phase by Rocchi, Silvia, Rocco, Anna, Pesek, Joseph J., Matyska, Maria T., Capitani, Donatella, Fanali, Salvatore

“…•A novel sub-2μm vancomycin modified silica hydride particles was synthesized.•The CSP material was packed into capillaries and used in nano-LC.•Experiments…”
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The use of aqueous normal phase chromatography as an analytical tool for food analysis: Determination of histamine as a model system by Dang, Andy, Pesek, Joseph J., Matyska, Maria T.

“…•Aqueous normal phase chromatography provides excellent retention of polar analytes.•Polar analytes are retained and separated without derivatisation.•Aqueous…”
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Cholesterol bonded phase as a separation medium in liquid chromatography: Evaluation of properties and applications by Pesek, Joseph J., Matyska, Maria T., Brent Dawson, G., Wilsdorf, Alan, Marc, Paul, Padki, Milind

“…An extensive survey of the properties and separation capabilities of a cholesterol bonded phase is reported. The intermediate hydrophobic/hydrophilic…”
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Rapid analysis of pyridinoline and deoxypyridinoline in biological samples by liquid chromatography with mass spectrometry and a silica hydride column by Naffa, Rafea, Watanabe, Seiichiro, Zhang, Wenkai, Maidment, Catherine, Singh, Preet, Chamber, Paul, Matyska, Maria T., Pesek, Joseph J.

“…Pyridinoline and deoxypyridinoline crosslinks are biomarkers found in urine for collagen degradation in bone turnover. For the first time, a rapid, sensitive,…”
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Application of linear solvation energy relationships and principal component analysis methods for the prediction of the retention behaviour of E-resveratrol analogues with substituted silica hydride stationary phases by Danylec, Basil, Kulsing, Chadin, Topete, Joshua C., Matyska, Maria T., Pesek, Joseph J., Boysen, Reinhard I., Hearn, Milton T.W.

“…In this investigation, application of linear solvent energy relationships (LSERs) and principal component analysis (PCA) methods have been employed to…”
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Open Tubular Capillary Electrochromatography of Synthetic Peptides on Etched Chemically Modified Columns by Pesek, Joseph J, Matyska, Maria T, Dawson, G. Brent, Chen, Boysen, Reinhard I, Hearn, Milton T. W

“…Two sets of peptides, each having structurally similar amino acid sequences, have been investigated by capillary electrochromatography (CEC) using etched…”
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Modified aluminas as chromatographic supports for high-performance liquid chromatography by Pesek, Joseph J., Matyska, Maria T.

“…This review begins by describing the relevant properties of alumina as a support material for chemically bonded stationary phases in HPLC. The most common…”
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Our favorite materials: Silica hydride stationary phases by Pesek, Joseph J, Matyska, Maria T

“…"Chance favors the prepared mind."Louis Pasteur"Reality is merely an illusion, albeit a very persistent one. "Albert EinsteinAs so succinctly stated by these…”
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Analysis of hydrophilic metabolites by high-performance liquid chromatography–mass spectrometry using a silica hydride-based stationary phase by Pesek, Joseph J., Matyska, Maria T., Fischer, Steven M., Sana, Theodore R.

“…A novel silica hydride-based stationary phase was used to evaluate the retention behavior in the aqueous normal-phase (ANP) mode of standards representing…”
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Evaluation of the dual retention properties of stationary phases based on silica hydride: Perfluorinated bonded material by Pesek, Joseph J., Matyska, Maria T., Natekar, Harshada

“…The synthesis of a new perfluorinated stationary phase based on silica hydride using a hydrosilation reaction was investigated. The material was characterized…”
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Synthesis and characterization of endcapped C18 stationary phases using a silica hydride intermediate by PESEK, Joseph J, MATYSKA, Maria T, YU, Raymond J

“…The effect of endcapping on an octdecyl bonded phase synthesized by the silanization/hydrosilation method is investigated. The endcapping reagent is a 1:1…”
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Aqueous normal-phase chromatography using silica-hydride-based stationary phases by Pesek, Joseph J., Matyska, Maria T., Boysen, Reinhard I., Yang, Yuanzhong, Hearn, Milton T.W.

“…► The unique separation properties of silica-hydride materials are described. ► Silica-hydride materials can retain both polar and non-polar compounds. ►…”
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Phenolic composition of pomegranate peel extracts using an liquid chromatography‐mass spectrometry approach with silica hydride columns by Young, Joshua E., Pan, Zhongli, Teh, Hui Ean, Menon, Veena, Modereger, Brent, Pesek, Joseph J., Matyska, Maria T., Dao, Lan, Takeoka, Gary

“…The peels of different pomegranate cultivars (Molla Nepes, Parfianka, Purple Heart, Wonderful and Vkunsyi) were compared in terms of phenolic composition and…”
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Liquid chromatography/mass spectrometry compatible approaches for the quantitation of folic acid in fortified juices and cereals using aqueous normal phase conditions by Young, Josh E., Matyska, Maria T., Pesek, Joseph J.

“…Folic acid was separated under aqueous normal phase (ANP) conditions with Diamond Hydride™ columns and quantitated in fortified cereal and juice matrices using…”
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1H HR/MAS NMR in the suspended state: Molecular recognition processes in liquid chromatography between steroids and a silica hydride-based cholesterol phase by Friebolin, Volker, Bayer, Marc P., Matyska, Maria T., Pesek, Joseph J., Albert, Klaus

“…A mixture of eight steroids was separated by HPLC on a silica hydride‐based stationary phase modified with a moiety of cholesteryl 10‐undecanoate. Within the…”
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Correlations between the zeta potentials of silica hydride-based stationary phases, analyte retention behaviour and their ionic interaction descriptors by Kulsing, Chadin, Yang, Yuanzhong, Munera, Caesar, Tse, Colby, Matyska, Maria T., Pesek, Joseph J., Boysen, Reinhard I., Hearn, Milton T.W.

“…•Zeta potential measurements were used to study key silica hydride properties.•Origin of the retention behaviour of basic, acidic and neutral analytes…”
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