| Autor: |
Krieger, Ulrich K., Rupp, Sabrina, Hausammann, Edwin, Peter, Thomas |
| Předmět: |
|
| Zdroj: |
Aerosol Science & Technology; Nov2007, Vol. 41 Issue 11, p975-980, 6p, 1 Diagram, 7 Graphs |
| Abstrakt: |
A time sharing, sequential scanning inlet system has been developed for a tapered element oscillating microbalance (TEOM) particulate matter (PM) mass measurement instrument, allowing quasi simultaneous measurement of ambient PM10 and PM1. Compared to running two separate instruments this approach eliminates systematic biases between the PM10 and PM1 data due to slightly different response functions of separate instruments. Furthermore, this approach reduces the costs of the measurements considerably. The system has been successfully tested during the winter 2005/2006 in Zurich, Switzerland and 24-hour average data have been compared to ambient concentrations measured with reference high volume sampler systems of the Swiss national air pollution monitoring network (NABEL) showing an excellent correlation. We demonstrate the use of our instrument for characterizing PM by showing the significant differences between PM10 and PM1 in their respective diurnal variation patterns as well as the increase in their concentrations during events of air stagnation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
