Sensory evaluation and chemical analysis of exhaled and dermally emitted bioeffluents

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    Conditions in which exhaled and dermally emitted bioeffluents could be sampled separately or together (whole-body emission) were created. Five lightly dressed males exhaled the air through a mask to another, identical chamber or without a mask to the chamber in which they were sitting; the outdoor air supply rate was the same in both chambers. The carbon dioxide concentration in the chamber with exhaled air was 2000 ppm. Chamber temperatures were 23°C or 28°C, and ozone was present or absent in the supply airflow. When dermally emitted bioeffluents were present, the perceived air quality (PAQ) was less acceptable, and the odor intensity was higher than when only exhaled bioeffluents were present. The presence or absence of exhaled bioeffluents in the unoccupied chamber made no significant difference to sensory assessments. At 28°C and with ozone present, the odor intensity increased and the PAQ was less acceptable in the chambers with whole-body bioeffluents. The concentrations of nonanal, decanal, geranylacetone, and 6-MHO were higher when dermally emitted bioeffluents were present; they increased further when ozone was present. The concentration of squalene then decreased and increased again at 28°C. Dermally emitted bioeffluents seem to play a major role in the sensory nuisance experienced when occupied volumes are inadequately ventilated.

    Original languageEnglish
    Pages (from-to)146-163
    Number of pages18
    JournalIndoor Air
    Volume28
    Issue number1
    DOIs
    Publication statusPublished - 2018 Jan 1

    Fingerprint

    Ozone
    Air
    Odors
    Air quality
    Masks
    Chemical analysis
    Carbon dioxide
    Squalene
    Carbon Dioxide
    Sensory analysis
    Temperature
    Odorants

    Keywords

    • chemical analyses
    • dermally emitted bioeffluents
    • exhaled bioeffluents
    • human bioeffluents
    • indoor air quality (IAQ)
    • sensory assessments

    ASJC Scopus subject areas

    • Environmental Engineering
    • Building and Construction
    • Public Health, Environmental and Occupational Health

    Cite this

    Sensory evaluation and chemical analysis of exhaled and dermally emitted bioeffluents. / Tsushima, Sayana; Wargocki, P.; Tanabe, Shinichi.

    In: Indoor Air, Vol. 28, No. 1, 01.01.2018, p. 146-163.

    Research output: Contribution to journalArticle

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