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Indoor/outdoor Particulate Matter Number and Mass Concentration in Modern Offices

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    0445015 - ÚCHP 2016 RIV NL eng J - Journal Article
    Chatoutsidou, S.E. - Ondráček, Jakub - Tesař, Ondřej - Tørseth, K. - Ždímal, Vladimír - Lazaridis, M.
    Indoor/outdoor Particulate Matter Number and Mass Concentration in Modern Offices.
    Building and Environment. Roč. 92, OCT 2015 (2015), s. 462-474. ISSN 0360-1323. E-ISSN 1873-684X
    EU Projects: European Commission(XE) 315760
    Institutional support: RVO:67985858
    Keywords : modern offices * particulate matter * mechanical ventilation
    Subject RIV: CF - Physical ; Theoretical Chemistry
    Impact factor: 3.394, year: 2015

    Indoor/Outdoor (I/O) particulate mass concentration (PM10) and number concentrations were measured online in modern office environments with mechanical ventilation. The measurement took place during June 2014 in a building, which, belongs to the Norwegian Institute for Air Research, in Norway. Particle number size distribution was measured with an SMPS and an APS instruments, whereas, mass concentration was measured with a Dust-Trak II photometer. Two offices were selected to examine the outdoor contribution of particles and the influence of indoor sources. One office was fully occupied during working hours and the second one unoccupied at all times. The results suggested that human presence during the working hours affected considerably indoor particles in the occupied office both in terms of number and mass concentration compared to the non-working hours conditions. In the absence of any significant indoor source generating new particles, the indoor environment was influenced mainly from the presence of people with resuspension activities being the most important source for particle sizes larger than 1 mm.
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