毒性の高い化合物の粒子発生法とミゼットインピンジャーによるオルトートリジン粒子の捕集効率 Particle Generation Method for Toxic Substances and Collection Efficiency of o-Tolidine Particles by Midget Impinger

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Collection efficiency of midget impinger for o-tolidine particles was determined with a newly developed particle generation system consisting of a glass nebulizer and a glass cylinder. To avoid contamination with toxic substances, 1 cm<SUP>3</SUP> methanol solution of o-tolidine was nebulized and completely dried in the glass cylinder. The total amount of generated particles was controlled by generation time and the size distribution of aerosol particles was adjusted by varying the concentration of nebulised solution. The size distribution of particles was determined with an Andersen sampler followed by a high performance liquid chromatography analysis with ultraviolet or fluorescence detection. The mass median diameters (MMDs) of the generated particles were 0.40, 0.66 and 1.1 μm when the concentrations of nebulized solution were 0.01, 0.1 and 1 g dm<SUP>-3</SUP>, respectively. The geometric standard deviation was 2.0. The collection efficiency of midget impinger did not exceed 30 % when the MMD was 1.1 μm, and it was dependent on the particle size. It is concluded that the evaluation of aiborne particle concentration in working environment by means of the midget impinger is not valid when submicron particles are dominant.

収録刊行物

  • エアロゾル研究 = Journal of aerosol research  

    エアロゾル研究 = Journal of aerosol research 14(3), 236-241, 1999-09-20 

    日本エアロゾル学会

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各種コード

  • NII論文ID(NAID)
    10002783567
  • NII書誌ID(NCID)
    AN10041511
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09122834
  • NDL 記事登録ID
    4863675
  • NDL 雑誌分類
    ZP5(科学技術--化学・化学工業--化学工学)
  • NDL 請求記号
    Z17-1062
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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