Real-time effective density monitor (DENSMO) for aerosol nanoparticle production

Paxton Juuti, Anssi Arffman, Antti Rostedt, Juha Harra, Jyrki M. Mäkelä, Jorma Keskinen

    Research output: Contribution to journalArticleScientificpeer-review

    5 Citations (Scopus)


    A new instrument, density monitor (DENSMO), for aerosol particle size distribution characterization and monitoring has been developed. DENSMO is operationally simple and capable of measuring the effective density as well as the aerodynamic and the mobility median diameters with a time resolution of 1 s, from unimodal particle size distributions. The characterization is performed with a zeroth order mobility analyzer in series with a low pressure impactor and a filter stage. The operation of DENSMO was investigated with sensitivity analysis and, based on the results, optimal operation parameters were determined. DENSMO was also compared, in lab test measurements, against a reference method with several particle materials with bulk densities from 0.92 to 10.5 g/cm3. The results show that the deviation from the reference method was less than 25% for suitable materials.

    Original languageEnglish
    Pages (from-to)487-496
    Number of pages10
    JournalAerosol Science and Technology
    Issue number5
    Publication statusPublished - 3 May 2016
    Publication typeA1 Journal article-refereed

    Publication forum classification

    • Publication forum level 2

    ASJC Scopus subject areas

    • Materials Science(all)
    • Environmental Chemistry
    • Pollution

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