Arlington, TX 1-817-272-1399
Superficially Porous Particle (SPP) Research

Macrocyclic glycopeptide chiral selectors bonded to core-shell particles enables enantiopurity analysis of the entire verubecestat synthetic route. J. Chromtogr. A. 1539, 87–92 (2018).

A comprehensive methodology for the chiral separation of 40 tobacco alkaloids and their carcinogenic E/Z-(R,S)-tobacco-specific nitrosamine metabolites. Talanta. 181, 132–141 (2018).

Separation of peptides on superficially porous particle based macrocyclic glycopeptide liquid chromatography stationary phases: consideration of fast separations. Anal. Bioanal. Chem. 409, 2437–2447 (2017).


D-Amino Acid Levels in Perfused Mouse Brain Tissue and Blood: A Comparative Study. ACS Chem. Neurosci. Ahead of Print (2017). doi:10.1021/acschemneuro.6b00398


Quinine bonded to superficially porous particles for high-efficiency and ultrafast liquid and supercritical fluid chromatography. Anal. Chim. Acta 963, 164–174 (2017).


Evaluation of nicotine in tobacco-free-nicotine commercial products. Drug Test. Anal. Ahead of Print (2017). doi:10.1002/dta.2145


Ultrafast Chiral Chromatography as the Second Dimension in Two-Dimensional Liquid Chromatography Experiments. Anal. Chem. 89, 3545–3553 (2017).


Ultrafast chiral separations for high throughput enantiopurity analysis. Chem. Commun. 53, 509–512 (2017).


Screening primary racemic amines for enantioseparation by derivatized polysaccharide and cyclofructan columns. J. Pharm. Anal. 6, 345–355 (2016).


Hydroxypropyl beta cyclodextrin bonded superficially porous particle-based HILIC stationary phases. J. Liq. Chromatogr. Relat. Technol. 39, 459–464 (2016).


Salient Sub-Second Separations. Anal. Chem. 88, 8821–8826 (2016).


Advances in high-throughput and high-efficiency chiral liquid chromatographic separations. J. Chromatogr. A 1467, 2–18 (2016).


Enantiomeric separations of α-aryl ketones with cyclofructan chiral stationary phases via high performance liquid chromatography and supercritical fluid chromatography. J. Chromatogr. A 1427, 45–54 (2016).


Superficially Porous Particle Based Hydroxypropyl-β-cyclodextrin Stationary Phase for High-Efficiency Enantiomeric Separations. Chirality 27, 788–794 (2015).


Gone in Seconds: Praxis, Performance, and Peculiarities of Ultrafast Chiral Liquid Chromatography with Superficially Porous Particles. Anal. Chem. 87, 9137–9148 (2015).


Ultrafast separation of fluorinated and desfluorinated pharmaceuticals using highly efficient and selective chiral selectors bonded to superficially porous particles. J. Chromatogr. A 1426, 241–247 (2015).


Superficially porous particles vs. fully porous particles for bonded high performance liquid chromatographic chiral stationary phases: Isopropyl cyclofructan 6. J. Chromatogr. A 1363, 89–95 (2014).


Comparison of superficially porous and fully porous silica supports used for a cyclofructan 6 hydrophilic interaction liquid chromatographic stationary phase. J. Chromatogr. A 1365, 124–130 (2014).


Paired Ion Electrospray Ionization (PIESI) Research

Saturated fatty acid determination method using paired ion electrospray ionization mass spectrometry coupled with capillary electrophoresis. Anal. Chim. Acta. 984, 223-231 (2017). 

Reduced matrix effects for anionic compounds with paired ion electrospray ionization mass spectrometry. Anal. Chim. Acta 912, 74–84 (2016).


Mass spectrometric detection of trace anions: The evolution of paired-ion electrospray ionization (PIESI). Mass Spectrom. Rev. 35, 201–218 (2016).


Sensitive detection of anionic metabolites of drugs by positive ion mode HPLC-PIESI-MS. Int. J. Mass Spectrom. 389, 14–25 (2015).


Separation and sensitive determination of sphingolipids at low femtomole level by using HPLC-PIESI-MS/MS. Analyst 139, 4169–4175 (2014).


Mechanism and Sensitivity of Anion Detection Using Rationally Designed Unsymmetrical Dications in Paired Ion Electrospray Ionization Mass Spectrometry. Anal. Chem. 86, 2665–2672 (2014).


High-performance liquid chromatography with paired ion electrospray ionization (PIESI) tandem mass spectrometry for the highly sensitive determination of acidic pesticides in water. Anal. Chim. Acta 792, 1–9 (2013).

Metal Cation Detection in Positive Ion Mode Electrospray Ionization Mass Spectrometry Using a Tetracationic Salt as a Gas Phase Ion-pairing agent: Evaluation of the Effect of Chelating Agents on Detection Sensitivity. Rapid Commun. Mass Spectrom.26, 2885-2896 (2012).

Sensitive Analysis of Metal Cations in Positive Ion Mode Electrospray Ionization Mass Spectrometry using Commercial Chelating Agents and Cationic Ion-pairing Reagents. Rapid Commun. Mass Spectrom. 26, 1005-1013 (2012).


Use of Ion Pairing Reagents for Sensitive Detection and Separation of Phospholipids in the Positive Ion Mode LC-ESI-MS. Analyst, 136,1586-1593 (2011).


Evaluation of Tetracationic Salts as Gas-phase Ion-pairing Agents for the Detection of Trivalent Anions in Positive Mode Electrospray Ionization Mass Spectrometry. Rapid Commun. Mass Spectrom. 24, 1113-1126 (2010).

Detection of nucleotides in positive-mode electrospray ionization mass spectrometry using multiply-charged cationic ion-pairing reagents. Anal. Bioanal. Chem. 398, 367-376 (2010).


Positive Mode Electrospray Ionization Mass Spectrometry of Bisphosphonates using Dicationic and Tricationic Ion-pairing Agents. Analytica Chimica Acta, 633, 232-237 (2009). 

The Evaluation and Comparison of Trigonal and Linear Tricationic Ion-Pairing Reagents for the Detection of Anions in Positive Mode ESI-MS. J. Am. Soc. Mass. Spectrom20, 529-538 (2009).


CE-ESI-MS Analysis of Singly Charged Inorganic and Organic Anions Using a Dicationic Reagent as a Complexing Agent. Electrophoresis, 30, 3918-3925 (2009).


Evaluation of Dicationic Reagents for Their Use in Detection of Anions Using Positive Ion Mode ESI-MS Via Gas Phase Ion Association. J. Am. Soc. Mass. Spectrom. 19, 261-269 (2008).


Evaluating the Use of Tricationic Reagents for the Detection of Doubly Charged Anions in the Positive Mode by ESI-MS. Anal. Chem. 80, 2612-2616 (2008). 

Evaluation of Flexible Linear Tricationic Salts as Gas-Phase Ion-Pairing Reagaents for the Detection of Divalent Anions in Positive Mode ESI-MS. Anal. Chem. 80, 8828-8834 (2008).


A General, Positive Ion Mode ESI-MS approach for the analysis of Singly Charged Inorganic and Organic Anions Using a Dicatonic Reagent. Anal. Chem.  79,7348-7352 (2007).