Research

Projects

Global and regional scale multicompartment chemistry-transport modelling of PAHs and other SOCs: The global model EMAC builds on an atmospheric general circulation model (ECHAM5). For regional scale studies, the air pollution model WRF-Chem is used. Both models are extended to multicompartment models by covering surface mass exchange processes with and storage in soils and seawater. Model simulations provide trace substance levels, compartmental, geographic and vertical distributions, burdens and mass fluxes on large spatial and a wide range of temporal (days to years) scales, characterize persistence and long-range transport potential, and may validate uncertain input data such as physico-chemical substance properties and emissions. Recent and on-going studies focused on the global cycling of PCBs (past, present, future), endosulfan (past, present) and global and regional (east Asia) cycling of parent PAHs (present). (cooperating with 1, 4, below)   

                

Local-scale processes of halogenated semivolatile organic compounds (SOCs) and polycyclic aromatic hydrocarbons (PAHs) in atmospheric aerosols: Gas-particle partitioning, wet deposition, air-surface exchange are addressed by air, water and soil sampling and off-line chemical analysis (mostly gas chromatography-mass spectrometry). Based on such field data respective equilibrium or steady state models are tested and improved. Recent and on-going studies focused on air-sea exchange, gas-particle partitioning, and wet scavenging of parent PAHs. (cooperating with 1-5, below)

                                           

Nitromono- and –polyaromatics in atmospheric matrices (NMAHs, NPAHs): Mutagenicity and toxicity in general of ambient air, at least in Europe, is mostly related to NPAHs and oxy-PAHs, the products of parent PAH atmospheric chemistry. A large part, more than one third of the mutagenic potential of ambient air is attributable to NPAHs. NPAHs and most NMAHs are underinvestigated. New analytical methods are available and will be applied. (new topic; cooperating with 3, 6, below)

Determination of the bioavailability of pollutants through inhalation exposure: Using synthetic epithelial lung fluids and thermodynamic modelling to quantify pollutant levels in the human lung

Cooperations
- internal

1. MPI Chem, Atmos Chem Dept


http://www.mpic.de/en/research/biogeochemistry.html

- external

2. Masaryk U, Res Centre for Toxic Compounds in the Environ (RECETOX), Brno/CZ

3. U Life Sciences, Dept Chem Biotechnol & Food Sci, Ås/NO

4. Aristotle U, Environ Pollut Ctrl Lab, Thessaloniki/GR

5. Cyprus Institute, En Environ & Water Res Ctr, Aglantzia/CY

6. INERIS, LCSQA, Verneuil en Halatte/FR