Browsing Kjemisk institutt by Author "Müller, Markus"

Now showing items 1-12 of 12

  • A novel method for producing NH4+ reagent ions in the hollow cathode glow discharge ion source of PTR-MS instruments 
    Müller, Markus; MÜller, Markus; Piel, Felix; Gutmann, Rene; Sulzer, Philipp; Hartungen, Eugen; Wisthaler, Armin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Proton-transfer-reaction mass spectrometry (PTR-MS) is seeing an increased use of NH4+ ions for the detection of amines and labile oxygenated organic compounds. NH4+ ions are usually generated from ammonia or ammonium-containing ...
  • Airborne measurements of western U.S. wildfire emissions: Comparison with prescribed burning and air quality implications 
    Liu, Xiaoxi; Huey, L. Gregory; Yokelson, Robert J.; Selimovic, Vanessa; Simpson, Isobel J.; Müller, Markus; Jimenez, José L.; Campuzano-Jost, Pedro; Beyersdorf, Andreas J.; Blake, Donald R.; Butterfield, Zachary; Choi, Yonghoon; Crounse, John D.; Day, Douglas A.; Diskin, Glenn S.; Dubey, Manvendra K.; Fortner, Edward; Hanisco, Thomas F.; Hu, Weiwei; King, Laura E.; Kleinman, Lawrence; Meinardi, Simone; Mikoviny, Tomas; Onasch, Timothy B.; Palm, Brett B.; Peischl, Jeff; Pollack, Ilana B.; Ryerson, Thomas B.; Sachse, Glen W.; Sedlacek, Arthur J.; Shilling, John D.; Springston, Stephen; St Clair, Jason M.; Tanner, David J.; Teng, Alexander P.; Wennberg, Paul O.; Wisthaler, Armin; Wolfe, Glenn M. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Wildfires emit significant amounts of pollutants that degrade air quality. Plumes from three wildfires in the western U.S. were measured from aircraft during the Studies of Emissions and Atmospheric Composition, Clouds and ...
  • Ammonia Dry Deposition in an Alpine Ecosystem Traced to Agricultural Emission Hotpots 
    Zondlo, Mark A.; Pan, Da; Benedict, Katherine B.; Golston, Levi M.; Wang, Rui; Collett, Jeffrey L.; Tao, Lei; Sun, Kang; Guo, Xuehui; Ham, Jay; Prenni, Anthony J.; Schichtel, B. A.; Mikoviny, Tomas; Müller, Markus; Wisthaler, Armin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Elevated reactive nitrogen (Nr) deposition is a concern for alpine ecosystems, and dry NH3 deposition is a key contributor. Understanding how emission hotspots impact downwind ecosystems through dry NH3 deposition provides ...
  • Atmospheric Chemistry of 2-Amino-2-methyl-1-propanol: A Theoretical and Experimental Study of the OH-Initiated Degradation under Simulated Atmospheric Conditions 
    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 ...
  • Atmospheric Chemistry of N-Methylmethanimine (CH3N=CH2): A Theoretical and Experimental Study 
    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 ...
  • Atmospheric Chemistry of tert-butylamine and AMP 
    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 ...
  • Atmospheric Degradation of Amines (ADA) : summary report from atmospheric chemistry studies of amines, nitrosamines, nitramines and amides. 
    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
  • Factors controlling marine aerosol size distributions and their climate effects over the northwest Atlantic Ocean region 
    Croft, Betty; Martin, Randall V.; Moore, Richard H.; Ziemba, Luke; Crosbie, Ewan; Liu, Hongyu; Russell, Lynn M.; Saliba, Georges; Wisthaler, Armin; Müller, Markus; Schiller, Arne; Galí, Martí; Chang, Rachel Y.-W.; McDuffie, Erin; Bilsback, Kelsey R.; Pierce, Jeffrey R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Aerosols over Earth's remote and spatially extensive ocean surfaces have important influences on planetary climate. However, these aerosols and their effects remain poorly understood, in part due to the remoteness and ...
  • Gas-particle partitioning of toluene oxidation products: An experimental and modeling study 
    Lannuque, Victor; D'Anna, Barbara; Kostenidou, Evangelia; Couvidat, Florian; Martinez-Valiente, Alvaro; Eichler, Philipp; Wisthaler, Armin; Müller, Markus; Temime-Roussel, Brice; Valorso, Richard; Sartelet, Karine (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract. Toluene represents a large fraction of anthropogenic emissions and significantly contributes to tropospheric ozone and secondary organic aerosol (SOA) formation. Despite the fact that toluene is one of the most ...
  • Introducing the extended volatility range proton-Transfer-reaction mass spectrometer (EVR PTR-MS) 
    Piel, Felix; Müller, Markus; Winkler, Klaus; Skytte Af Sätra, Jenny Marie; Wisthaler, Armin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Proton-transfer-reaction mass spectrometry (PTR-MS) is widely used in atmospheric sciences for measuring volatile organic compounds in real time. In the most widely used type of PTR-MS instruments, air is directly introduced ...
  • On the sources and sinks of atmospheric VOCs: an integratedanalysis of recent aircraft campaigns over North America 
    Chen, Xin; Millet, Dylan B.; Singh, Hanwant B.; Wisthaler, Armin; Apel, Eric C.; Atlas, Elliot L.; Blake, Donald R.; Bourgeois, Ilann; Brown, Steven S.; Crounse, John D.; de Gouw, Joost A.; Flocke, Frank M.; Fried, Alan; Heikes, Brian G.; Hornbrook, Rebecca S.; Mikoviny, Tomas; Min, Kyung-Eun; Müller, Markus; Neuman, J. Andrew; O’Sullivan, Daniel W.; Peischl, Jeff; Pfister, Gabriele G.; Richter, Dirk; Roberts, James M.; Ryerson, Thomas B.; Shertz, Stephen R.; Thompson, Chelsea R.; Treadaway, Victoria; Veres, Patrick R.; Walega, James; Warneke, Carsten; Washenfelder, Rebecca A.; Weibring, Petter K.A.; Yuan, Bin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    We apply a high-resolution chemical transport model (GEOS-Chem CTM) with updated treatment of volatile organic compounds (VOCs) and a comprehensive suite of airborne datasets over North America to (i) characterize the VOC ...
  • Ultrahigh Sensitivity PTR-MS Instrument with a Well-Defined Ion Chemistry 
    Reinecke, Tobias; Leiminger, Markus; Jordan, Alfons; Wisthaler, Armin; Müller, Markus (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Proton-transfer-reaction mass spectrometry (PTR-MS) is widely used for measuring organic trace gases in air. In traditional PTR-MS, both nonpolar and polar analytes are ionized with unit efficiency, as predicted from ...