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Organic aerosols in air

Aerosols affect the radiation budget of the Earth by scattering of sunlight as well as affecting cloud formation and lifetime. In addition they may have detrimental health effects. The organic fraction of aerosols is the most complex and least understood. We investigate the sources and chemical composition of organic aerosols in relation to both their climate and environmental effects.

We have developed specific analysis methods of organic trace compounds in aerosols using high-performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (HPLC qTOF-MS). We apply these methods to both laboratory and field studies of aerosol processes in collaboration with national and international research groups.

Chemical analysis of bio oils

Bio-oils formed from hydrothermal treatment of biomass or waste constitute a chemically complex mixture. We have developed methods for chemical analysis of bio-oils by gas chromatography coupled to mass spectrometry (GC-MS), which we use to study the biofuel potential of different feedstocks in collaboration with the research group of Bo Brummerstedt Iversen, Dep. of Chemistry and private companies.

Selection of chemical methods of analysis

We develop and apply chemical analysis methods in a wide variety of studies, from investigations of air pollution in urban areas (using passive sampling techniques) to studies of chemical processes in the food industry.

Multivariate data analysis

Multivariate data analysis techniques have many applications and may also be used to investigate sources to aerosols. X-ray fluorescence provides elemental analysis of samples and the data are interpreted by multivariate data analysis.