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 10 of 10 for “"Headspace Gas Chromatography"”.
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Profile of Missouri Norton wine aroma using solid phase microextraction of headspace, gas chromatography-olfactometry, mass spectrometry
… across the state of Missouri were analyzed using gas chromatography/mass spectrometry/olfactometry (GC/MS/O) in order to catalog common volatile compounds. Extraction of volatile compounds was performed using headspace solid-phase microextraction (HS-SPME) and identified by a trained panel. The …
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Qualitative and Quantitative Evaluation of Volatile Compounds of Deep Frying Oil and French Fries: Static and Dynamic Headspace-Gas Chromatography-Mass Spectrometric Analysis
… in French fries was achieved by using dynamic headspace-capillary GC-mass spectrometry. The total amount of flavor significant volatiles increased in the following order: non filtered treatment $>$ diatomaceous earth filter aid $>$ magnesium silicate filter aid. Total polymer content was …
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Using high resolution mass spectrometry to profile impurities in drugs from different sources
… bases were investigated by using capillary ion chromatography. The different pharmaceutical bases contained a wide range of trace ions as well as the main counter-anion. Aside from the anions being present as impurities they might have an impact of processing procedures such as crystallisation. …
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Exploration of Using Cyclodextrins as Novel Additives and Fining Agents in Wine
… A limitation associated with conventional headspace gas chromatography mass spectrometry (HS GC-MS), namely the interaction of CD with the normalising standard is identified. A new HS GC-MS method is therefore developed to address this issue by isolating the normalising standard from the …
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Werner clathrates: structure and selectivity
… been scrutinised and the response determined by gas chromatography and nuclear magnetic resonance spectroscopy. The characteristics of the pyridine derivative ligands co-ordinated to the metal ion in the Werner complexes are instrumental in the behaviour of the inclusion compound. When the host …
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Entomotoxicological and Thermal Factors Affecting the Development of Forensically Important Flies
… that fed on treated meat was examined using headspace-gas chromatography (HSGC). All larvae had a content of 0.01% w/v, including the control. The effects of ante-mortem injection of oxycodone in pigs were examined with respect to insect succession patterns and the development rates of …
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Herramientas analíticas basadas en la aplicación de machine learning sobre datos espectroscópicos
… de separación, como la cromatografía líquida o gaseosa acoplada a detectores de masas. Sin embargo, este enfoque presenta desventajas como la necesidad de una larga preparación de la muestra, que pueden incluir etapas previas de tratamientos de separación o concentración, el elevado costo de …
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Antimony and acetaldehyde migration from Nigerian and British PET bottles into water and soft drinks under typical use conditions. Concentration of migrants and some trace elements in polyethylene terephthalate and in bottled contents.
… and soft drinks and PET were determined using headspace gas chromatography with flame ionisation detection (GC-FID). Accuracy and precision for determination of antimony and other trace elements in bottle materials and bottle contents were good as recoveries were around 100% and coefficients of …