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Abstract
This study provides insights into the performance of a new nano-water-based condensation particle counter (N-WCPC, TSI 3788) and presents a comparison to the well-established butanol-based ultrafine CPC (UCPC, TSI 3776). The suitability of the N-WCPC to measure ambient airborne nanoparticles of various compositions has been assessed with an urban background aerosol in a light industrial area and provided comparable results (within 2%) to the 3776 at various particle number concentrations. The subsequent investigation using laboratory generated nearly monodisperse positively charged sucrose, sodium chloride, proteins, emery oil, and candle-generated particles in the diameter range of 2–53 nm showed material-dependent N-WCPC cut-off sizes between 2.2 and 17.2 nm at standard operating temperatures.
Copyright 2013 American Association for Aerosol Research
Acknowledgments
This research has received funding from the EC's Seventh Framework Programme under the grant agreement no. 215072 (Marie Curie Initial Training Network “CLOUD-ITN”), and from the Austrian Science Fund (project no. P 19546, L593).
[Supplementary materials are available for this article. Go to the publisher's online edition of Aerosol Science and Technology to view the free supplementary files.]