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Condensation particle counter with photo-induced nucleation

The objective of this project consists of designing a new
family of particle counters for the measurement of the
concentration of ultra-fine particles and gaseous precursors

Aerosols are now recognised as playing a central role in such diverse environmental problems as respiratory diseases, climate change, visibility impairment and the eutrophication of remote areas. Aerosols are also the sites on which heterogeneous reactions of gaseous trace constituents occur. The sources of each of the major chemical constituents of the aerosols must be known and their role in atmospheric processes must be elucidated, in order to regulate and reduce their detrimental effects. There are indications that most of the mass in the fine aerosols (Dp < 2.5 um) is secondary, i.e. is not directly emitted, but formed from gaseous precursors in the atmosphere. The absence of reliable aerosol data prevents understanding of the formation of these secondary aerosols and evaluation of their treatment in chemical transport models and in this sense aerosol science is at a level at which the measurement of most gaseous pollutants was over a decade ago. However, legislation will soon be needed to consider the sources and contributions of the major individual aerosol components to the total mass in order to develop efficient abatement strategies for total mass. The objective of this project consists in designing new condensation particle counter with photo-induced nucleation for measurement of the concentration of small particles and gaseous precursors. A condensation particle counter with the following specifications will be designed and built: * minimum detectable particle diameter >1 nm; * particle concentration range from 0 to 104 particles/cm3; * concentration accuracy 10%; * flow rate from 30 to 1500 cm3; * working fluid: dibutilphthalate. Keywords: measuring instrument, air pollution, ultra-fine particles.
Acronym: 
COPAP
Project ID: 
2 507
Start date: 
02-04-2001
Project Duration: 
36months
Project costs: 
600 000.00€
Technological Area: 
Optical Technology related to measurements
Market Area: 

Raising the productivity and competitiveness of European businesses through technology. Boosting national economies on the international market, and strengthening the basis for sustainable prosperity and employment.