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Статті в журналах з теми "Multibed adsorbent tubes - thermal desorption - GC-MS"
Paris, Enrico, Monica Carnevale, Beatrice Vincenti, Adriano Palma, Ettore Guerriero, Domenico Borello, and Francesco Gallucci. "Evaluation of VOCs Emitted from Biomass Combustion in a Small CHP Plant: Difference between Dry and Wet Poplar Woodchips." Molecules 27, no. 3 (January 31, 2022): 955. http://dx.doi.org/10.3390/molecules27030955.
Повний текст джерелаRossignol, S., L. Chiappini, E. Perraudin, C. Rio, S. Fable, R. Valorso, and J. F. Doussin. "Development of parallel sampling and analysis for the elucidation of gas/particle partitioning of oxygenated semi-volatile organics: a limonene ozonolysis study." Atmospheric Measurement Techniques Discussions 5, no. 1 (February 6, 2012): 1153–231. http://dx.doi.org/10.5194/amtd-5-1153-2012.
Повний текст джерелаRossignol, S., L. Chiappini, E. Perraudin, C. Rio, S. Fable, R. Valorso, and J. F. Doussin. "Development of a parallel sampling and analysis method for the elucidation of gas/particle partitioning of oxygenated semi-volatile organics: a limonene ozonolysis study." Atmospheric Measurement Techniques 5, no. 6 (June 27, 2012): 1459–89. http://dx.doi.org/10.5194/amt-5-1459-2012.
Повний текст джерелаДисертації з теми "Multibed adsorbent tubes - thermal desorption - GC-MS"
Lecharlier, Aurore. "Caractérisation des composés trace dans le biogaz et biométhane : développement d'une méthode d'échantillonnage, de préconcentration in situ et d'analyse." Electronic Thesis or Diss., Pau, 2022. http://www.theses.fr/2022PAUU3008.
Повний текст джерелаIn pursuance of enhancing knowledge on biogas and biomethane’s trace compounds to help guarantee their sustainable integration in today’s European energy mix, a field sampling set-up enabling direct in situ preconcentration of non-metallic trace compounds in such gas samples at their pipe working pressure (up to 200 bara) was developed. Non-metallic trace compounds targeted in this work included alkanes (linear, cyclic, polycyclic), aromatics, terpenes, alkenes, halogenated organic species, oxygenated organic species (alcohols, aldehydes, esters, furans and ethers, ketones), siloxanes, organic and inorganic Sulphur-compounds. Firstly, state-of-the-art gas sampling and preconcentration techniques for the determination of trace compounds in gaseous matrices were reviewed. Based on this review, preconcentration was chosen to be performed on self-assembled multibed adsorbent tubes (MAT). The preconcentration system was elaborated and optimized in the laboratory: convenient commercial adsorbents were selected; procedures for the assembly and conditioning of new MAT were established; four MAT configurations were tested on their efficiency in adsorbing and releasing targeted trace compounds using certified synthetic gas mixtures containing targeted species at trace concentrations (1 ppmmol) in CH4 or N2 matrices. Analytes preconcentrated on MAT were recovered for analysis by thermal desorption (TD) of the tubes using a new TD prototype followed by gas chromatography (GC) hyphenated with mass spectrometry (MS) (TD-GC-MS). Secondly, the analytical method, and in particular the new TD prototype, was validated. The chromatographic resolution power of the new TD prototype was proved to be higher than that obtained from other well established preconcentration or GC-injection methods such as solid phase microextraction or direct headspace gas injection. Besides, GC-MS parameters were optimized to detect the broad range of trace compounds potentially found in biogas and biomethane.Thirdly, the use of a novel high-pressure tube sampling (HPTS) prototype was evaluated for the circulation of pressurized gases (up to 200 bara) through MAT for the direct high-pressure preconcentration of trace compounds from such gases. The HPTS was first validated in the laboratory using pressurized certified synthetic gas mixtures, and then used on field to sample compressed biomethane at a natural gas grid injection station at 40 bara.Subsequently, the field sampling chain was set-up and 6 field sampling campaigns were conducted where 6 different streams of landfill gas, biogas and biomethane were collected at a landfill plant and two anaerobic digestion plants treating diverse feedstocks. Trace compounds were qualitatively determined in all gas samples via the developed TD-GC-MS method. In a single sampling run and using limited gas volumes ranging 0.5 – 2 LN, a wide range of trace compounds in a variety of chemical families (alcohols, aldehydes, alkenes, aromatics, alkanes (linear, cyclic and polycyclic), esters, furans and ethers, halogenated species, ketones, Sulphur-compounds, siloxanes and terpenes) were identified. Variations in trace compounds composition were observed in the different gases sampled and potential correlations between feedstocks nature, implemented gas treatment processes and trace compounds determined were discussed. In particular, the substantial generation of the mono-terpene p-cymene and of other terpenes was evidenced for anaerobic digestion plants treating principally food-wastes. It is believed the shortened and high-pressure-proof field preconcentration procedure developed in this work can contribute facilitating field sampling operations for the determination of trace compounds in complex gas matrices such as biogas and biomethane
Частини книг з теми "Multibed adsorbent tubes - thermal desorption - GC-MS"
Jamaladdeen, Rawaa, Bruno Coudour, Fabienne Dédaldéchamp, Laurent Lemée, Jean-Pierre Garo, and Hui-Ying Wang. "Influence of combined hydric and thermal stresses on Rosmarinus officinalis and Cistus albidus." In Advances in Forest Fire Research 2022, 1665–70. Imprensa da Universidade de Coimbra, 2022. http://dx.doi.org/10.14195/978-989-26-2298-9_255.
Повний текст джерела