肺からの吸入たばこ煙のウォッシュアウト特性 Washout Characteristics of Inhaled Cigarette Smoke from Human Lung

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Author(s)

    • 李 相権 LEE Sang-Gwon
    • 金沢大学大学院自然科学研究科物質化学工学科 Department of Chemical Engineering, Graduate School of Natural Science and Technology, Kanazawa University
    • 大谷 吉生 OTANI Yoshio
    • 金沢大学大学院自然科学研究科物質化学工学科 Department of Chemical Engineering, Graduate School of Natural Science and Technology, Kanazawa University

Abstract

Environmental tobacco smoke consists of 85 % of sidestream cigarette smoke and 11 % of exhaled mainstream smoke. In order to prevent non-smokers from passive smoking, exposure to the exhaled mainstream smoke as well as to the sidestream smoke has to be taken into account. In the present work, in order to elucidate the washout characteristics of inhaled smoke from the lung, smoking patterns were measured for the subjects with various vital capacities by using newly devised anemometer, and the particle concentrations and size distributions in the exhaled air were measured with SMPS (Scanning Mobility Particle Sizer, TSI Model 3936) and ELPI (Electrical Low Pressure Impactor, DEKATI Model 24317). As a result, (1) vital capacities of smokers do not affect the inspiration pattern of cigarette smoke, (2) exhaled air from a subject who is breathing room air contains particles with a bimodal distribution, (3) residual particles in the lung are washed out after 20 times of deep breathing, (4) human lung constantly generates particles with a median size smaller than 0.01 μm at the concentration of about 1.6 × 10<SUP>4</SUP> cm<SUP>-3</SUP>, (5) smoke exhaled from the lung has a bimodal distribution with the concentration of about 2.5 × 10<SUP>7</SUP> cm<SUP>-3</SUP>, (6) after smoking, complete washout of residual smoke in the lung requires normal breathing for 20 min.

Journal

  • Earozoru Kenkyu  

    Earozoru Kenkyu 21(3), 247-254, 2006-09-20 

    Japan Association of Aerosol Science and Technology

References:  13

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Codes

  • NII Article ID (NAID)
    10018250348
  • NII NACSIS-CAT ID (NCID)
    AN10041511
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    09122834
  • NDL Article ID
    8516599
  • NDL Source Classification
    ZP5(科学技術--化学・化学工業--化学工学)
  • NDL Call No.
    Z17-1062
  • Data Source
    CJP  NDL  J-STAGE 
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