Gas chromatography-ion mobility spectrometry (GC-IMS) identifies odor markers that flag early mold growth in cigar tobacco.
|Articles|January 4, 2011
E-Separation Solutions
- E-Separation Solutions-01-06-2011
- Volume 0
- Issue 0
Tips & Tricks: GPC/SEC Peak Identification in GPC/SEC
Analyzing a complex mixture of unknown macromolecules and low molar mass compounds is often challenging in GPC/SEC.
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Analyzing a complex mixture of unknown macromolecules and low molar mass compounds is often challenging in GPC/SEC. A disadvantage of the most commonly used detector, the very universal but unspecific refractive index (RI) detector, is that this detector only provides concentration information and no information about the chemistry. In addition, various positive and negative peaks besides the pure sample peaks in a GPC/SEC run are normal.
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Lorna Nisbet from the Leverhulme Research Centre for Forensic Science, discusses a GC–MS. technique developed to detect anabolic-androgenic steroids in e-cigarettes seized from Scottish prisons.
Kinjal Bhatt and Ina Varfaj trace their pull toward analytical science to a saturated chromatography peak and the moment their first chiral peaks separated.
Gérard Hopfgartner explains why pairing SFC with dopant-assisted APPI can match, or even beat, electrospray sensitivity, even at microflow LC rates.
Emma Macturk from LECO Corporation explains which forensic applications benefit from GC×GC’s greater peak capacity, and when the additional separation power may only provide limited benefits.
Koji Yamaguchi of the International University of Health and Welfare (Narita, Japan) discusses a novel derivatized liquid chromatography-tandem mass spectrometry (LC-MS/MS) method plus propofol glucuronide (PRG) marker which improves forensic propofol detection.
Gas chromatography-mass spectrometry (GC-MS) coupled with headspace solid-phase microextraction )HS-SPME) links cocoa variety to chocolate aroma and flavor profiles.
Liquid chromatography-tandem mass spectrometry (LC-MS/MS) identifies blood metabolite patterns tied to children's diets.
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