Browsing Kjemisk institutt by Author "Nielsen, Claus Jørgen"
Now showing items 1-14 of 14
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Mikoviny, Tomas; Nielsen, Claus Jørgen; Tan, Wen; Wisthaler, Armin; Zhu, Liang; Morken, Anne Kolstad; Nilsen, Terje Niøten (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)A PTR-QiTOF instrument was deployed in the field in the vicinity of the CO2 Technology Center Mongstad (TCM) for measuring amines in ambient air. The observed single-to-double-digit pptv levels of dimethylamine (DMA) and ...
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Tan, Wen; Zhu, Liang; Mikoviny, Tomas; Nielsen, Claus Jørgen; Tang, Yizhen; Wisthaler, Armin; Eichler, Philipp; Müller, Markus; D'Anna, Barbara; Farren, Naomi J.; Hamilton, Jacqueline F.; Pettersson, Jan B. C.; Hallquist, Mattias; Antonsen, Simen Gjelseth; Stenstrøm, Yngve H. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)The OH-initiated degradation of 2-amino-2-methyl-1-propanol [CH3C(NH2)(CH3)CH2OH, AMP] was investigated in a large atmospheric simulation chamber, employing time-resolved online high-resolution proton-transfer reaction-t ...
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Antonsen, Simen Gjelseth; Bunkan, Arne Joakim Coldevin; Mikoviny, Tomas; Nielsen, Claus Jørgen; Stenstrøm, Yngve H.; Wisthaler, Armin; Zardin, Erika (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)The kinetics of the O3, OH and NO3 radical reactions with diazomethane were studied in smog chamber experiments employing long-path FTIR and PTR-ToF-MS detection. The rate coefficients were determined to be k CH2NN+O3 = ...
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Antonsen, Simen Gjelseth; Bunkan, Arne Joakim Coldevin; Mikoviny, Tomas; Nielsen, Claus Jørgen; Stenstrøm, Yngve H.; Wisthaler, Armin; Zardin, Erika (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)The reaction of CH3NC with OH radicals was studied in smog chamber experiments employing PTR-ToF-MS and long-path FTIR detection. The rate coefficient was determined to be kCH3NC+OH = (7.9 ± 0.6) × 10–11 cm3 molecule–1 s–1 ...
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Bunkan, Arne Joakim Coldevin; Reijrink, Nina G.; Mikoviny, Tomas; Müller, Markus; Nielsen, Claus Jørgen; Zhu, Liang; Wisthaler, Armin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)The OH-initiated photo-oxidation of N-methylmethanimine, CH3N═CH2, was investigated in the 200 m3 EUPHORE atmospheric simulation chamber and in a 240 L stainless steel photochemical reactor employing time-resolved online ...
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Antonsen, Simen Gjelseth; Bunkan, Arne Joakim Coldevin; D'Anna, Barbara; Eichler, Philipp; Farren, Naomi J.; Hallquist, Mattias; Hamilton, Jacquiline F.; Kvarnliden, Hampus; Mikoviny, Tomas; Müller, Markus; Nielsen, Claus Jørgen; Stenstrøm, Yngve H.; Tan, Wen; Wisthaler, Armin; Zhu, Liang (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)The atmospheric chemistry of (CH3)3CNH2 (tert-butylamine, tBA) and (CH3)2(CH2OH)CNH2 (2-amino-2-methyl-1-propanol, AMP) has been studied by quantum chemistry methods and in photo-oxidation experiments in the EUPHORE chamber ...
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Nielsen, Claus Jørgen; D´Anna, Barbara; Bossi, Rossana; Bunkan, Arne Joakim Coldvin; Dithmer, Line; Glasius, Marianne; Hallquist, Mattias; Hansen, Anne Maria K.; Lutz, Anna; Salo, Kent; Maguta, Mihayo Musabila; Nguyen, Quynh; Mikoviny, Tomas; Müller, Markus; Skov, Henrik; Sarrasin, Emmanuel; Stenstrøm, Yngve; Tang, Yizhen; Westerlund, Jonathan; Wisthaler, Armin (Research report / Forskningsrapport, 2012)CLIMIT project no. 208122
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Nielsen, Claus Jørgen; Tang, Yizhen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)This comment addresses a systematic error in the potential energy surfaces of the title reactions presented in the original article by Alkorta et al. The NO3 radical has D3h symmetry in the electronic ground state while ...
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Tan, Wen; Zhu, Liang; Mikoviny, Tomas; Nielsen, Claus Jørgen; Wisthaler, Armin; D´Anna, Barbara; Antonsen, Simen Gjelseth; Stenstrøm, Yngve H.; Farren, Naomi J.; Hamilton, Jacqueline F.; Boustead, Graham A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)The OH-initiated photo-oxidation of piperazine and 1-nitropiperazine as well as the photolysis of 1-nitrosopiperazine were investigated in a large atmospheric simulation chamber. The rate coefficient for the reaction of ...
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Tomsche, Laura; Piel, Felix Maximilian; Mikoviny, Tomas; Nielsen, Claus Jørgen; Guo, Hongyu; Campuzano-Jost, Pedro; Nault, Benjamin A.; Schueneman, Melinda K.; Jimenez, Jose L.; Halliday, Hannah; Diskin, Glenn; Digangi, Joshua P.; Nowak, John B.; Wiggins, Elizabeth B.; Gargulinski, Emily; Soja, Amber J.; Wisthaler, Armin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)Abstract. During the 2019 Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) study, the NASA DC-8 carried out in situ chemical measurements in smoke plumes emitted from wildfires and agricultural ...
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Fagerlund, Johan; Zevenhoven, Ron; Thomassen, Jørgen; Tednes, Marius; Abdollahi, Farhang; Thomas, Laurent; Nielsen, Claus Jørgen; Mikoviny, Tomas; Wisthaler, Armin; Zhu, Liang; Biliyok, Chet; Zhurkin, Andrey (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)Fortum Oslo Varme AS (FOV) decided (in July 2018) to build a 1:350 scale pilot plant to demonstrate that the selected Shell’s CANSOLV capture technology using solvent DC-103 is suitable for cleaning CO₂ from the exhaust ...
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Bunkan, Arne Joakim Coldevin; Hetzler, Jens; Mikoviny, Tomas; Wisthaler, Armin; Nielsen, Claus Jørgen; Olzmann, Matthias (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)The reactions of OH radicals with CH3NHCHO (N-methylformamide, MF) and (CH3)2NCHO (N,N-dimethylformamide, DMF) have been studied by experimental and computational methods. Rate coefficients were determined as a function ...
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Zhu, Liang; Mikoviny, Tomas; Wisthaler, Armin; Nielsen, Claus Jørgen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Laboratory experiments were carried out to study Schiff-base condensation reactions between amines and formaldehyde that occur on inlet lines of emission monitoring instruments. Primary amines and formaldehyde were found ...
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Hodnebrog, Øivind; Aamaas, Borgar; Fuglestvedt, Jan S.; Marston, G.; Myhre, Gunnar; Nielsen, Claus Jørgen; Sandstad, Marit; Shine, Keith P.; Wallington, Timothy J. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Human activity has led to increased atmospheric concentrations of many gases, including halocarbons, and may lead to emissions of many more gases. Many of these gases are, on a per molecule basis, powerful greenhouse gases, ...