SIZE-DEPENDENT MEASUREMENT OF AEROSOL PHOTOEMISSION FROM PARTICLES IN DIESEL EXHAUST

被引：1
|
作者：
LEONARDI, A
BURTSCHER, H
SIEGMANN, HC
机构：
[1] Laboratory for Solid State Physics, ETH-Hönggerberg
来源：
ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS | 1992年 / 26卷 / 18期
关键词：
DIESEL PARTICLES; SOOT; PHOTOEMISSION; POLYAROMATIC HYDROCARBONS;
D O I：
10.1016/0960-1686(92)90344-K
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The size dependence of the photoelectric yield is investigated for particles in the exhaust of an oil burner and a diesel engine. This experiment yields information on the relative concentration of polyaromatic hydrocarbons (PAH) on particles of different sizes. For the particles produced by the oil burner the PAH concentration is proportional to beta(D)/D2, where beta(D) is the attachment coefficient and D the particle diameter. This is expected when the PAH concentration is controlled by diffusion flux to the particles. With diesel particles, however, the PAH concentration per unit particle surface is much higher with smaller particles than can be explained by the diffusion model.
引用
收藏
页码：3287 / 3290
页数：4
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