Field Comparison of P-Trak and Condensation Particle Counters

Autor: Thomas Kuhn, Nu Yu, William C. Hinds, Yifang Zhu
Rok vydání: 2006
Předmět:
Zdroj: Aerosol Science and Technology. 40:422-430
ISSN: 1521-7388
0278-6826
DOI: 10.1080/02786820600643321
Popis: The P-trak ultrafine particle counter is a portable version of a condensation particle counter (CPC). Both instruments detect particle number concentrations in real time but have different detection limits. The P-trak has been widely used for indoor air quality evaluation and aerosol research. However, there is very limited information about the reliability and precision of this instrument and its comparability with other similar instruments. The purpose of this study was to compare a P-trak ultrafine particle counter with a standard CPC and evaluate its applicability to ambient air monitoring. This study was carried out near the Interstate 405 freeway (I-405) in Los Angeles. Measurements were made at increasing distances from the freeway on both sides at night as well as inside and outside of two 2-bedroom apartments located near the freeway. A CPC and a Scanning Mobility Particle Sizer (SMPS) were collocated with two P-traks and measurement results compared. In general, higher correlations were observed...
Databáze: OpenAIRE