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Researchers at the Paul Scherrer Institute PSI have for the first time observed photochemical processes inside the smallest particles in the air. In doing so, they discovered that additional oxygen radicals that can be harmful to human health are formed in these aerosols under everyday conditions. I more
Alkanes, an important component of fuels for combustion engines and an important class of urban trace gases, react via another reaction pathways than previously thought. These hydrocarbons, formerly called paraffins, thus produce large amounts of highly oxygenated compounds that can contribute to or more
Researchers at Ludwig-Maximilians-Universitaet (LMU) in Munich have explored the initial consequences of the interaction of light with molecules on the surface of nanoscopic aerosols. The nanocosmos is constantly in motion. All natural processes are ultimately determined by the interplay between rad more
Atmosperic aerosols have a strong impact on the climate. Within the organic aerosol fraction, anhydrosugars and sugar alcohols are valuable tracers f more
The summer holidays are here, which means there’ll soon be crowds flocking to the coast to spend the day at the beach. The supposed benefits of ‘fresh sea air’ are commonly extolled, but its origins might not be what you think: it’s the chemical compounds produced by algae and seaweed that contribut more
The aroma of pine trees is one that’s evocative of Christmas; one of the responsible molecules, alpha-pinene, has already been featured on the Chemistry Advent Calendar, but here we take a more detailed look at the chemical constituents of the aroma. One of the most important contributors to the Chr more
Aerosol particles reaction could happen between different components within a particle or between a particle and its environment. The fate of atmospheric aerosols depends on the environment, the composition and the distribution of the components within a particle. It could be very interesting to see more
Mass transfer between the gas and condensed phases in aerosols can be limited by slow bulk diffusion within viscous particles. During the heterogeneous and multiphase reactions of viscous organic aerosol particles, it is necessary to consider the interplay of numerous mass transfer processes and how more
Oxalic acid (OxA) is an end product in the oxidation of many organic compounds before CO2 and therefore is ubiquitous in the atmosphere and the most abundant organic species in aerosols. To better understand the hygroscopic properties of OxA under sub- and supersaturated conditions in the atmosphere more
The current debates on driving bans in European cities show not only how important air quality is to the public but also reveal the lack of available methods to directly assess the adverse effects of air pollutants on human health. more
Sonja Mülhopt earned her diploma in mechanical engineering at the Berufsakademie Mannheim (now DHBW) in 2000, completing her concomitant training at the Karlsruhe Research Center, now the Karlsruhe Institute of Technology (KIT). In 2014 she received the Master of Science in Chemical Engineering from more
Hendryk Czech, born in 1988, received his doctoral degree in 2017 from the University of Rostock. Afterwards, he continued his research as postdoctoral researcher at the University of Eastern Finland in Kuopio. Since 2019, he has been project manager of the German-Israeli Helmholtz International Lab more
Hanns-R. Paur earned his doctorate in chemistry at the LMU Munich and subsequently researched as a postdoc at the University of California, Riverside. Activities From 1997 to 2018 he headed the Department of Aerosol and Particle Technology at the Institute for Technical Chemistry (ITC) of the Karlsr more
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