Non-exhaust emission measurement system of the mobile laboratory SNIFFER

L. Pirjola (Corresponding Author), K. J. Kupiainen, P. Perhoniemi, H. Tervahattu, Hannu Vesala

    Research output: Contribution to journalArticleScientificpeer-review

    48 Citations (Scopus)


    In this paper we describe and quality assure the sampling system of a mobile research laboratory SNIFFER which was shown to be a useful tool for studying emission levels of respirable dust from street surfaces. The dust plume had bimodal structure; another mode rising to higher altitudes whereas the other mode remained at lower altitudes. The system was tested on a route in Helsinki, Finland, during spring 2005 and 2006. The PM2.5 and PM10 were positively correlated and the PM levels increased with the vehicle speed. SNIFFER was able to identify the characteristic emission levels on different streets. A clear downward trend in the concentrations was observed in all street locations between April and June. The composition of the street dust collected by SNIFFER was compared with springtime PM10 aerosol samples from the air quality monitoring stations in Helsinki. The results showed similarities in the abundance and composition of the mineral fraction but contained significantly more salt particles.

    Original languageEnglish
    Pages (from-to)4703-4713
    Number of pages11
    JournalAtmospheric Environment
    Issue number31
    Publication statusPublished - 2009
    MoE publication typeA1 Journal article-refereed
    Event6th International Conference on Urban Air Quality - Nicosia, Cyprus
    Duration: 27 Mar 200729 Mar 2007


    • Street dust
    • Road wear
    • Mobile measurements
    • Re-suspension
    • PM10
    • PM2.5


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