6533b874fe1ef96bd12d605f
RESEARCH PRODUCT
Composition and mixing state of the urban background aerosol in the Rhein-Main area (Germany)
Johannes SchneiderStephan WeinbruchLothar SchützMartin EbertKonrad KandlerKonrad KandlerBarbara P. VesterEric B. Barnertsubject
Atmospheric Sciencefood.ingredientChemistrySea saltAnalytical chemistrymedicine.disease_causeSootAerosolchemistry.chemical_compoundfoodUltrafine particleParticle-size distributionmedicineCarbonateParticleAerosol mass spectrometryGeneral Environmental Sciencedescription
Abstract Size-resolved aerosol particle samples in the size range 0.1–10 μm aerodynamic diameter were collected in the years 2003 and 2004 at an urban background station in Mainz, Germany. Size, morphology, chemical composition and mixing state of more than 5400 individual particles of 7 selected sampling days were analyzed in detail by scanning electron microscopy and energy-dispersive X-ray microanalysis. In addition, transmission electron microscopy, aerosol mass spectrometry and atomic force microscopy were applied to obtain detailed information about the mixing state of the particles. The fine particle fraction (diameter 1 μm diameter) is strongly dependant on air mass history with variable abundances of complex secondary aerosol particles, aged sea salt, silicates, silicate mixtures, calcium sulfates, calcium sulfate/carbonate mixtures, calcium nitrate/carbonate mixtures, biological particles, and external soot. The dominance of complex secondary aerosol particles shows that reduction of the precursor gases is a major goal for successful reduction strategies for PM10.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-09-01 | Atmospheric Environment |