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 7 of 7 for “"PTR-MS"”.
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Calibration, optimization, and deployment of PTR-MS instruments during the AIRMAP project
<p>Proton Transfer Reaction Mass Spectrometry (PTR-MS) is an increasingly popular technique for monitoring volatile organic compounds with high sensitivity and time resolution. This dissertation encompasses three different projects, sharing the common theme of expanding the knowledge and utility of …
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Development of a Novel Methodology for the Identification of VOC Emission Sources in Indoor Environments based on the Material Emission Signatures and Air Samples measured by PTR-MS
… even of experts when a building with problems of indoor air quality is suspected. The objectives of this study were 1) to determine VOC emission signatures specific to nine typical building materials by using an on-line analytical monitoring device, Proton Transfer Reaction - Mass …
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Volatile organic compounds in the New England troposphere: Atmospheric chemistry and measurement techniques
… proton transfer reaction-mass spectrometer (PTA-MS) for atmospheric toluene measurements under conditions often dominated by biogenic emissions. Quantitative estimates were made of potential interferences in the PTR-MS toluene measurements related to sampling and analysis of monoterpenes, …
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The application of novel mass spectrometric techniques for the analysis of volatile organic compounds in different environments
… such as Gas Chromatography-Mass Spectrometry (GC-MS). The development of the proton transfer reaction mass spectrometer (PTR-MS) has enabled the online analysis of VOC’s from both biogenic and anthropogenic sources. This instrument, however, provides little structural information making it …
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Rapid and Green Volatilomics of Roasted Hazelnuts: Comparative Multiplatform Analysis and Advanced Data Mining
… coupled with Mass Spectrometry (GC-MS) remains the reference technique, reducing analysis time and minimizing the environmental impact of analytical methods are becoming pressing priorities, especially in industrial contexts. The aim of this thesis was to evaluate the potential of …
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Reduction of salt in yeasted wheat bread: impact on bread quality and solutions using sourdough fermented by functional lactic acid bacteria strains
… and proton-transfer-reaction mass spectrometry (PTR-MS) resulted in significantly different results based on different yeast activities. Nevertheless, the extent of the result could not be recognised by the sensory panel analysing the odour profile of the bread crumb samples. Hence, the consumer …
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Impacts of long-range transport of biomass burning on air quality in Texas.
… Quality (TCEQ) Continuous Ambient Monitoring (CAMS) and Black and Brown Carbon (BC2)- aerosol optical monitoring networks in Texas revealed potential regional impacts of these transported BB events on urban O3 levels. Overall, this chapter supports implementing an extended network of aerosol …