George Christian, D'Anna Barbara, Herrmann Hartmut, Weller Christian, Vaida Veronica, Donaldson D. J., Bartels-Rausch Thorsten, Ammann Markus Emerging Areas in Atmospheric Photochemistry, (2014), Emerging Areas in Atmospheric Photochemistry
, Springer-Verlag, Berlin Heidelberg1-54.
Ammann M, Cox R.A., Crowley J.N., Jenkin M.E., Mellouki A., Rossi M.J., Troe J., Wallington T.J. (2013), Evaluated kinetic and photochemical data for atmospheric chemistry: Volume VI – heterogeneous reactions with liquid substrates, in Atmospheric Chemistry and Physics
, 13, 8045-8228.
Berkemeier T., Huisman A. J., Ammann M., Shiraiwa M., Koop T., Pöschl U. (2013), Kinetic regimes and limiting cases of gas uptake and heterogeneous reactions in atmospheric aerosols and clouds: a general classification scheme, in Atmos. Chem. Phys.
, 13, 6663-6686.
Lampimäki Markus, Zelenay Veronika, Křepelová Adéla, Liu Zhi, Chang Rui, Bluhm Hendrik, Ammann Markus (2013), Ozone-Induced Band Bending on Metal-Oxide Surfaces Studied under Environmental Conditions, in ChemPhysChem
, 14, 2419-2425.
Shiraiwa M, Selzle K, Yang H, Sosedova Y, Ammann M, Poschl U (2012), Multiphase Chemical Kinetics of the Nitration of Aerosolized Protein by Ozone and Nitrogen Dioxide, in ENVIRONMENTAL SCIENCE & TECHNOLOGY
, 46(12), 6672-6680.
Donaldson DJ, Ammann M, Bartels-Rausch T, Poschl U (2012), Standard States and Thermochemical Kinetics in Heterogeneous Atmospheric Chemistry, in JOURNAL OF PHYSICAL CHEMISTRY A
, 116(24), 6312-6316.
Shiraiwa M, Ammann M, Koop T, Poschl U (2011), Gas uptake and chemical aging of semisolid organic aerosol particles, in PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AME
, 108(27), 11003-11008.
Shiraiwa M, Sosedova Y, Rouvière A, Yang H, Zhang Y, Abbatt JPD, Ammann M, Pöschl U (2011), The role of long-lived reactive oxygen intermediates in the reaction of ozone with aerosol particles, in Nature Chemistry
, 3(4), 291-295.
Sosedova Y, Rouviere A, Bartels-Rausch T, Ammann M (2011), UVA/Vis-induced nitrous acid formation on polyphenolic films exposed to gaseous NO2, in PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
, 10(10), 1680-1690.
Chemical processing of aerosol particles in the atmosphere is a major aspect in determining their environmental impact, such as on climate, the atmosphere’s oxidation capacity, human health or sensitive ecosystems. Nitrogen oxides are key players in the gas phase atmospheric chemistry as they largely control the ozone budget over the globe. Nitrogen oxides are involved in a rich heterogeneous chemistry with aerosol particles. Among these, the hydrolysis of dinitrogen pentoxide (N2O5) plays a particularly significant role in the nocturnal atmosphere as it represents a removal pathway of nitrogen oxides. As part of this removal pathway, also reactive intermediates are formed that feed back into the oxidative chemistry. Understanding the kinetics of these processes is still limited. Based on our background in heterogeneous kinetics of especially nitrogen oxides, in particular using the short-lived radioactive tracer 13N, we propose to extend our suite of trace gas species to N2O5 and specifically focus on the temperature dependence of N2O5 hydrolysis as well as the so-called nitrate effect, where using the tracer offers a unique opportunity to make use of isotopic dilution to separate the initial uptake from follow up processes. Condensed phase processing by nitrogen oxides contributes to the continuous transformation of aerosol particles. While our trace gas kinetics experiments performed earlier and proposed above cover short time chemical processes, the longterm effects on the surface properties as well as on particle bulk structure are very important for their environmental impact. We have recently explored novel tools, namely ambient pressure X-ray photoelectron spectroscopy (HP-XPS) as well as Scanning Transmission X-Ray Microscopy (STXM) to address interfacial chemistry and internal particle structure, respectively. We propose to extend these investigations by exploring the condensed phase chemistry and photochemistry of NO2 and HNO3 with mineral oxides and organic substrates. HP-XPS will provide us with shallow depth resolved surface chemical composition and electronic structure. On the other hand, STXM, combined with X-ray absorption spectroscopy (XAS) allows monitoring the chemical transformation of the interior of particles.