Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Fast GC"”.
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Fast GC: Applications and Theoretical Studies
… this work explores the scope and limitations of fast temperature programming in the fast GC analyses of various sample types. These samples included polycyclic aromatic hydrocarbons (PAHs), hydrocarbons and food samples. Programming rates of up to 1200° C/min were used. These fast programming …
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Investigation of column and instrumental parameters for fast gas chromatography analysis
… of a conventional gas chromatography system for fast chromatography. Many gas chromatographic separations actually require much Iss time than js actually being spent on the analysis. Capillary columns are known to be very efficient due to the long lengths and thin stationary phase films. However, …
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Contribution à l'étude de métabolites secondaires d'Harmonia axyridis (Pallas) en relation avec la coloration de l'insecte
… par spectrométries de masse et RMN. La pureté GC de cette N,N-diacétylharmonine est de 100%. Sa stabilité en solution acétonique à 4°C a été vérifiée. En utilisant cette molécule purifiée, une méthode originale de quantification de l’harmonine par chromatographie gazeuse ultra rapide a été mise …
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Geochemical tools and paleoclimate clues : multi-molecular and isotopic investigations of tropical marine sediments and alpine ice
… chromatography/time-of-flight mass spectrometry (GC/TOF-MS) was used to generate a high-resolution, multi-molecular organic biomarker record from Peru Margin sediments (~11oS, 252 m water depth) for the last 15 ka. Because of their position beneath the oxygen minimum zone of a productive upwelling …
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Gas Chromatography: Mass Spectrometry of Chemical Agents and Related Interferents
… that sample to the measurement instrument for fast separation and identification. I have been involved in developing a field-portable gas chromatography-mass spectrometry (GC-MS) system with solid phase microextraction (SPME) sampling for point detection of chemical agents. The objective is to …