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© 2021 MJH Life Sciences and Chromatography Online. All rights reserved.
© 2021 MJH Life Sciences™ and Chromatography Online. All rights reserved.
June 04, 2021
Different stationary phases, solvents, and compounds using different split ratios demonstrating impacts to selectivity as a function of analytes interacting with the solvent and the stationary phase are examined.
June 01, 2021
The incorporation of a post-column reaction using a 3D-printed, two-stage microreactor is showing groundbreaking performance improvements for flame ionization detection in many gas chromatography applications—and delivers carbon universal response.
HS-GC analysis is presented as an excellent method for the analysis of high volatile components in e-liquids. For the analysis of semivolatile ingredients, an additional sample preparation step is proposed based on a LLE followed by a freeze-out of the matrix components.
We take a look at the past, present, and future of applying gas chromatography–mass spectroscopy (GC–MS) techniques to non-targeted screening (NTS) in various disciplines, assessing both the opportunities and the challenges.
Recycling plastics involves catalytically cracking polymers back into their constituent monomer mixtures, which require careful characterization for further processing. There is a resurging need for detectors that can detect and characterize heteroatom-containing species.
Correlation, clustering, and color projection techniques exploit the ability of the human brain to identify patterns from huge amounts of visual information. This process can provide a life raft for a weary chromatographer who is drowning in data.
Solid adsorbent gas chromatography (GC) columns, such as porous layer open tubular (PLOT) columns, are the best option for GC analysis of C1–C5 hydrocarbons, but water can affect retention and selectivity. We review the effects of water for different types of PLOT columns, and explain how to prevent or remediate the problem.
Microextraction is an affordable solution for preventing “garbage in–garbage out” effects in one-dimensional (1D) and two-dimensional (2D) GC separations, by providing analyte preconcentration, interference removal, tuning of extraction coverage, and easy coupling to GC systems.
May 26, 2021
Separation science is an intriguing and challenging (yes, let’s admit it) interdisciplinary field. Many of our daily rituals depend on effective chemical separations.
May 17, 2021
A review of the history and fundamentals for determining and reporting limit of detection (LOD) for analytical instruments and methods. Includes a discussion of the International Union of Pure and Applied Chemistry (IUPAC) and propagation of errors methods used for calculating LOD, and explains the limitations of the IUPAC method in modern chromatography.