Molecular level impressions – simulations with a focus on atmospheric processes

How can molecular dynamics simulations give insights into microscopic structures and dynamics? I’ll give three examples from past and ongoing projects to advertise simulations and illustrate how they can complement experimental results. The examples will touch upon 1) Ice growth kinetics: the accommodation of vapour molecules into ice surfaces 2) Structures of water at interfaces: promotion or inhibition of ice …

SewAus – Exploiting wastewater to better understand health risks in Australian communities

Wastewater treatment plants are designed to collect waste from populations.  When individuals are exposed to chemicals or pathogens, a fraction of the agent is typically excreted either in its original form or as a metabolite via urine or faeces. Many of these can be identified and quantified in wastewater.   Systematic collection and analysis of wastewater has rapidly evolved to provide …

Multiscale Modeling of Atmospheric Pollution Formation and Feedbacks: Air and Energy Research at the United States EPA

In order to support both robust enforcement of clean air regulations and effective management of air quality in the United States, the U.S. Environmental Protection Agency charges scientists in its Office of Research and Development with maintaining a comprehensive atmospheric research program, building tools for air quality analysis, and anticipating future problematic air pollution issues. This seminar will cover a …

Insights into molecular steps of secondary aerosol formation in the polar atmospheres

Major fraction of arctic and polar cloud condensation nuclei (CCN), upon which cloud droplets form, are of secondary origin, i.e., they are formed from gas phase via homogeneous nucleation and subsequent cluster growth by condensation of low volatile vapours. The low volatile vapours required in the process are formed in gas phase oxidation of both biogenic volatile compounds and anthropogenic …

Secondary Electrospray Ionization Mass Spectrometry for Medical Diagnosis of Respiratory Diseases

Exhaled breath contains relevant information on a person’s health status. Our vision is to use real-time and completely non-invasivechemical analysis of exhaled breath for applications such as medical diagnosis, monitoring progress and treatment of diseases, drug compliance, pharmacokinetics, and others. The methodology we use to analyze breath in real time is based on secondary electrospray ionization coupled to high-resolution mass spectrometry (SESI-HRMS). It …

“Particle formation” vs. “particle growth”: Robust metric for determining the onset of condensational growth of nanoparticles

I’ll discuss how to robustly model and interpret observations of formation of atmospheric nanoparticles from condensable vapors and their growth in the nanometer size range. Correct representation of these processes is critical for resolving particle formation mechanisms, and for quantifying atmospheric particle loadings and effects.

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Contact information

Visiting addresses:

Geovetenskapens Hus,
Svante Arrhenius väg 8, Stockholm

Arrheniuslaboratoriet, Svante Arrhenius väg 16, Stockholm (Unit for Analytical and Toxicological Chemistry)

Mailing address:
Department of Environmental Science and Analytical Chemistry (ACES)
Stockholm University
106 91 Stockholm

Press enquiries should be directed to:

Annika Hallman
Science Communicator
Phone +46 (0)8 16 15 53
Mobile +46 (0)70 664 22 64
annika.hallman@aces.su.se