Carbon disulfide is the solvent of choice for eluting adsorption packages prior to analysis by GC/FID. In laboratories which utilize mass selective detectors instead of flame ionization detectors, diethyl ether, a much friendlier solvent, can be used in place of the CS2. No loss of sensitivity occurs, and there is a salutary impact on bench workers' health as well as on the aroma of the fire de...

Submit Manuscript | http://medcraveonline.com Abbreviations: GLPs: Gracilaria Lemaneiformis Polysaccharides; FTIR: Fourier Transform Infrared Spectroscopy; GC: Gas Chromatography; HPGPC: High Performance Gel Permeation Chromatography; NK: Natural Killer; IL-2: Interleukin-2; IFN-γ: Interferon-γ; TNF-α: Tumor Necrosis Factor-α; BRM: Biological Response Modifier; ConA: Concanavalin A; LPS: Lipo P...

The essential oils of wintergreen and birch are composed primarily methyl salicylate. Because this compound can easily be synthesized, frequently adulterated. By using Gas chromatography-combustion/pyrolysis-isotope ratio mass spectrometry (GC-C/P-IRMS) in conjunction with TC/EA-IRMS, GC-FID, GC-MS, 14C radiocarbon dating, criteria will established that used to distinguish authentic natural fro...