Flowing afterglow
WebFlowing afterglow mass spectrometry, FA-MS, is a sensitive and quantitative mass spectrometry analytical approach that offers a route to on-line, real-time deuterium abundance measurements in water vapour in breath and above aqueous liquids, including urine and serum. This method involves the production and flow of thermalised hydrated … WebJul 27, 2024 · Here, a reactive flowing atmospheric-pressure afterglow (reactive-FAPA) AMS source is developed for rapid isomer differentiation by derivatization of analytes in real time. The effects of the reactive-FAPA operating conditions on the reagent and product ions were studied and optimized for highly volatile and non-volatile model compounds with ...
Flowing afterglow
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WebA flowing afterglow system has been used to measure the gas-phase, thermal-energy rate constants for reactions between a variety of ions and water-vapour molecules at 300K. A method of measuring water-vapour flow-rates has been developed which may be readily extended to other vapours. Rate constants, together with WebApr 1, 2004 · Gas-phase reactions of nitromethane (1), nitroethane (2), 2-nitropropane (3), 2-methyl-2-nitropropane (4) and nitrocyclopropane (5) were studied at 300 K using the …
WebApr 20, 2024 · We describe the plasma chemistry in a helium flowing atmospheric pressure afterglow (FAPA) used for analytical spectrometry, by means of a quasi-one … WebAbstract. The experimental technology of the flowing afterglow technique, including data analysis procedures, has very recently been described in great detail. (1) The present discussion will center on some recent results and their implications for increasing our understanding of ion-neutral reaction processes.
WebJun 28, 2000 · The flowing afterglow of a microwave discharge can be used to efficiently inactivate bacterial spores. We have conducted a parametric study of the operating … WebThe observed pressure dependences indicate that the recombination process in H3 + dominated plasma can at higher pressure (order of several hundreds pascals) proceeds via a three-body mechanism. Recombination of H3 + ions with electrons was studied in Flowing Afterglow (FALP) experiment at T = 250 K and buffer gas pressure 1500-1600 Pa. In …
WebAfterglow Tip #2: Keep a Journal. Through your reflections, it can help to spend time journaling your thoughts and feelings, written or recorded. This will capture a moment in …
WebFlowing afterglow mass spectrometry, FA-MS, is a sensitive and quantitative mass spectrometry analytical approach that offers a route to on-line, real-time deuterium abundance measurements in water vapour in breath and above aqueous liquids, including urine and serum. This method involves the production and flow of thermalised hydrated … howard bachWebMay 4, 2006 · We present the optimization of a sterilization process with a N 2 flowing afterglow post-discharge. First we study the inactivation of bacteria (E. coli) submitted to the post-discharge, and discuss the mechanisms of bacteria inactivation. Then we evaluate the volume repartition of the active species (N atoms produced by plasma discharge) in ... howard bachman williamsburg virginiaWebA flowing afterglow system has been used to measure the gas-phase, thermal-energy rate constants for reactions between a variety of ions and water-vapour molecules at 300K. A … howard backen and vicky charleshow many huge grim reapers are thereWebHere, the atmospheric-pressure glow discharge (APGD) and afterglow of a helium flowing atmospheric-pressure afterglow (FAPA) ionization source were examined by optical … howard bachusWebJan 1, 1975 · THE BASIC FLOWING AFTERGLOW A simplified schematic diagram of the basic flowing afterglow is shown. in Fig. 1. The principle of operation is quite simple. A … howard backen architect bookWebAbstract. The experimental technology of the flowing afterglow technique, including data analysis procedures, has very recently been described in great detail. (1) The present … howard bach engineer