Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 4, 2011
Previous Article Next Article

Temperature effect of tapered element oscillating microbalance (TEOM) system measuring semi-volatile organic particulate matter

Author affiliations

Abstract

The tapered element oscillating microbalance (TEOM) system is widely used to measure continuous particle mass concentrations in air quality networks. However, the semi-volatile aerosol material is lost under normal operation conditions (50 °C). This study has evaluated the error in the organic fraction of the TEOM-measured secondary organic aerosols formed from the degradation of biogenic pollutants. Experiments were carried out under controlled, water-free conditions in a fully equipped, high volume atmospheric simulator—the European PhotoReactor (EUPHORE). The ozonolysis of α-pinene, β-pinene and limonene provided a reproducible source of organic aerosol. Particulate matter concentration profiles were registered for different TEOM operating temperatures. When these values were compared with values from a filter-based gravimetric method and a scanning mobility particle sizer (SMPS), they showed that the differences between monitoring systems increased with increasing TEOM temperature. According to our results, when the TEOM is operated at 50 °C, it fails to measure 32–46% of the organic particulate material, depending on the aerosol precursor. This study has also identified and quantified the multi-oxygenated organic compounds lost in the TEOM monitoring by using a method based on the gas chromatography-mass spectrometry technique. Important losses have been calculated for relevant ambient aerosol compounds such as pinonic acid, pinonaldehyde, norpinone and limonalic acid. In conclusion, the present study has demonstrated that a high operating temperature of the TEOM monitor reduces the humidity interference but underestimates the semi-volatile organic fraction.

Graphical abstract: Temperature effect of tapered element oscillating microbalance (TEOM) system measuring semi-volatile organic particulate matter

Back to tab navigation

Publication details

The article was received on 04 Oct 2010, accepted on 25 Jan 2011 and first published on 23 Feb 2011


Article type: Paper
DOI: 10.1039/C0EM00451K
Citation: J. Environ. Monit., 2011,13, 1017-1026

  •   Request permissions

    Temperature effect of tapered element oscillating microbalance (TEOM) system measuring semi-volatile organic particulate matter

    L. Tortajada-Genaro and E. Borrás, J. Environ. Monit., 2011, 13, 1017
    DOI: 10.1039/C0EM00451K

Search articles by author

Spotlight

Advertisements