Atmospheric simulation chambers,are unique tools for investigating atmospheric processes in the gas and heterogeneous phases.They can provide a controlled yet realistic environment that simulates atmospheric condition...Atmospheric simulation chambers,are unique tools for investigating atmospheric processes in the gas and heterogeneous phases.They can provide a controlled yet realistic environment that simulates atmospheric conditions.In the current study,a Teflon atmospheric simulation chamber of 600 L,named THALAMOS(thermally regulated atmospheric simulation chamber) has been developed and cross-validated.THALAMOS can be operated over the temperature range 233 to 373 K under both static and flow conditions.It is equipped with state of the art instrumentation(selective ion flow tube mass spectrometry(SIFT-MS),long path Fourier transform infrared spectroscopy(FTIR),gas chromatography-mass spectrometry(GC-MS),various analyzers) for the in-line monitoring of both reactants and products.THALAMOS was validated by measuring the rate coefficients of well documented reactions,i.e.the reaction of ethanol with OH radicals and the reaction of dichloromethane with Cl atoms,in a wide temperature range.Two different detection techniques were used in parallel,FTIR and SIFT-MS,to internally cross-validate the obtained results.The measured rate coefficients are in excellent agreement,both between each other and with the literature recommended values.Furthermore,the gas phase oxidation of toluene by Cl atoms(kinetics and product yields) was studied in the temperature range of 253 to 333 K.To the best of our knowledge,THALAMOS is a unique facility on national level and among a few smog chambers internationally that can be operated in such a wide temperature range providing the scientific community with a versatile tool to simulate both outdoor and indoor physicochemical processes.展开更多
基金part of the chemical and physical properties of the atmosphere(Ca PPA)project funded by the Agence Nationale de la Recherhe(ANR)through the programme d’investissements d’avenir PIA(No.ANR-11-LABX0005-01)the“Hauts-de-France”Regional Council and the European Regional Development Fund(ERDF)+4 种基金the Institut National des Sciences de L’univers(INSU)les Enveloppes Fluides et L’environnement Chimie de L’atmosphère(LEFE-CHAT)program for financial supportsupport from Labex Ca PPA for his graduate fellowshipsupport from Labex Ca PPA for his short term visit at the institute mines telecom(IMT)Lille Douaisupport from the project make our planet great again(MOPGA)for her short term visit at IMT Lille Douaithe Greek sate scholarships foundation(IKY)program that funds her PhD
文摘Atmospheric simulation chambers,are unique tools for investigating atmospheric processes in the gas and heterogeneous phases.They can provide a controlled yet realistic environment that simulates atmospheric conditions.In the current study,a Teflon atmospheric simulation chamber of 600 L,named THALAMOS(thermally regulated atmospheric simulation chamber) has been developed and cross-validated.THALAMOS can be operated over the temperature range 233 to 373 K under both static and flow conditions.It is equipped with state of the art instrumentation(selective ion flow tube mass spectrometry(SIFT-MS),long path Fourier transform infrared spectroscopy(FTIR),gas chromatography-mass spectrometry(GC-MS),various analyzers) for the in-line monitoring of both reactants and products.THALAMOS was validated by measuring the rate coefficients of well documented reactions,i.e.the reaction of ethanol with OH radicals and the reaction of dichloromethane with Cl atoms,in a wide temperature range.Two different detection techniques were used in parallel,FTIR and SIFT-MS,to internally cross-validate the obtained results.The measured rate coefficients are in excellent agreement,both between each other and with the literature recommended values.Furthermore,the gas phase oxidation of toluene by Cl atoms(kinetics and product yields) was studied in the temperature range of 253 to 333 K.To the best of our knowledge,THALAMOS is a unique facility on national level and among a few smog chambers internationally that can be operated in such a wide temperature range providing the scientific community with a versatile tool to simulate both outdoor and indoor physicochemical processes.
