Research:

I Current and future work can be divided in four major projects/areas which are described below. These areas are not isolated projects; I rather see them to be overlapping and they should benefit from each other.

• Secondary Organic Aerosol
• Traffic Emission of Particles
• Chemical Characterisation of Organic Aerosol Particles and Implementation in Models
• Urban Atmospheric Particle Measurements

Selected recent publications:

Evolution of the Urban Aerosol during Winter Temperature Inversion Episodes, Janhäll S, Olofson K. F. G, Andersson P. U. K, Pettersson J. B. C, and Hallquist, M, accepted for publication in Atmospheric Environment

The impact of humidity on the ozone initiated oxidation of limonene, ?3-carene and a -pinene, Jonsson Å. M, Hallquist M, and Ljungström E, Environ. Sci. and Tech, 40 (1): 188-194 (2006)

On-line alkali analysis of individual aerosol particles in urban air, Svane M, Janhäll S, Hagström M, Hallquist M, Pettersson J.B.C, Atmospheric Environment, 39 (36): 6919-6930 (2005)

A novel method for determination of size resolved, submicrometer traffic emission factors, Janhäll S, Hallquist M , Environ. Sci. Tech, 39, 3 7609-7615 (2005)

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