<報文>ディーゼル車排ガス中のエアロゾル

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Particle size distribution and the relation between the particle size and the amount of main components of Diesel exhaust aerosol were investigated. The amounts of the main components, i.e. elemental carbonand the sum of salts and organic materials, were determined thermo gravimetrically. The elemental carbon was separated from salts and organic materials by means of stepwise heating. The salts were not separated from the organic materials. Sulfate ion was also analyzed by means of ion chromatography. The concentration of the total aerosol was 56mg/m3, that of the elemental carbon was 18mg/m3, and that of the sum of the salts and organic materials was 16 mg/m3. The elemental carbon was rich in the small particles and the small particles less than 0.43μm in　diameter　occupied about 50wt％ of the elemental carbon. The salts and organic materials were also rich in small particles but the distribution was not so extreme as in the case of the elemental carbon.
横浜国立大学の論文