Open AccessDetermination of size distribution of atmospheric aerosol by DOAS
Author(s) -
Fuqi Si,
Jianguo Liu,
Pinhua Xie,
Yujun Zhang,
Kai Dou,
Wenqing Liu
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.3165
Subject(s) - differential optical absorption spectroscopy , aerosol , extinction (optical mineralogy) , molar absorptivity , materials science , particle size distribution , optics , optical path , intensity (physics) , path length , particle size , attenuation coefficient , spectroscopy , absorption (acoustics) , analytical chemistry (journal) , physics , chemistry , meteorology , chromatography , quantum mechanics
With the method of differential optical absorption spectroscopy (DOAS), aerosolalong the light path is monitored and its size distribution is measured with double optical path method. By using double optical path method, the absolute intensity of the source can be determined and the influence of source variation is reduced greatly. Aerosol extinction coefficient from 250nm to 650nm and size distribution from 0.1μm to 1.75μm were obtained. By comparison with optical particle counting, good correlations are found between the DOAS and optical particle counting resulcs.