Understanding Electron Ionization Processes for GC–MS
April 1st 2015Many of us use electron ionization (EI) in gas chromatography–mass spectrometry (GC–MS) without a good understanding of the technique and how we might manipulate the process to give more appropriate results or a better understanding of the analytes under investigation.
New HPLC Systems and Products Introduced at Pittcon 2015: A Brief Review
April 1st 2015This installment highlights noteworthy high performance liquid chromatography (HPLC) and related products introduced at Pittcon 2015 in New Orleans, Louisiana, as well as in the year prior.
New Chromatography Columns and Accessories for 2015
April 1st 2015Volume 33 Number 4Pages 234-247This is our annual review of new liquid chromatography (LC) columns and accessories introduced at Pittcon and throughout the previous year. This year, Michael Swartz, former author of our "Innovations in HPLC" and "Validation Viewpoint" columns, steps in as a guest columnist to write the review.
MISER LC–MS Analysis of Teas, Soft Drinks, and Energy Drinks
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.