Erik L. Regalado

Articles

Nonlinear Predictive Modelling Enables In Silico Optimization of Chromatographic Methods for Complex Stationary Phase‑Analyte Interactions

Imad A. Haidar Ahmad;Gioacchino Luca Losacco;Adrian Clarke;Erik L. Regalado

August 1st 2022

To reach satisfactory results in terms of accurate retention time prediction, new in silico optimization approaches must be considered.

Evaluation of Achiral Stationary Phases for Gradient Screening with Supercritical Fluid Chromatography

Raffeal Bennett;Matthew Przybyciel;Erik L. Regalado;Mirlinda Biba

June 1st 2019

Unlike reversed-phase liquid chromatography, SFC lacks a universal stationary phase. Thus, it is important to re-evaluate the default column screening library used with SFC. In this study, three uncommon achiral SFC columns were investigated and compared to three popular stationary phases.

MISER LC–MS Analysis of Teas, Soft Drinks, and Energy Drinks

Christopher J. Welch;Erik L. Regalado;E. Celeste Welch;Natacha A. Hidalgo;Danielle Almstead;Abigail S. Kress;Michael H. Kress;Margaret J. Welch;Hannah Semmelhack;Christina Kraml

April 1st 2015

In this study, we describe a simple and rapid liquid chromatography–mass spectrometry (LC–MS) method for the evaluation of caffeine, taurine, and aspartame in teas, soft drinks, and energy drinks using high performance liquid chromatography (HPLC) coupled with electrospray ionization (ESI)-MS detection and multiple injections in a single experimental run (MISER) analysis.

MISER LC–MS Analysis of Teas, Soft Drinks, and Energy Drinks

Christopher J. Welch;Erik L. Regalado;E. Celeste Welch;Natacha A. Hidalgo;Danielle Almstead;Abigail S. Kress;Michael H. Kress;Margaret J. Welch;Hannah Semmelhack;Christina Kraml

April 1st 2015

This article describes a simple and rapid LC–MS method for evaluation of caffeine, taurine, and aspartame in teas, soft drinks, and energy drinks using HPLC coupled with electrospray ionization mass spectrometry detection and MISER analysis.