Measurement of NO2 Concentration in Atmosphere in Chengdu by Solar Spectra
ZUO Hao-yi1, GAO Jie1, CHENG Juan1, Andrew Yuk Sun Cheng2, YANG Jing-guo1*
1. Department of Physics, Sichuan University, Chengdu 610064, China 2. Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China
Abstract：In the present paper, a new improved method for measuring NO2 concentration of atmosphere by using differential optical absorption spectroscopy of solar spectrum was reported. The sample solar spectra were collected in Chengdu city and Xiling Mountain respectively by a CCD optical multi-channel analyzer. With the upper atmosphere solar spectrum as the reference spectrum, by fitting the sample spectrum and the reference spectrum using least-square method in five spectrum ranges, the various NO2 concentrations(vertical column density) of 3.1×1016 to 5.8×1016(molecule·cm-2)in Chengdu city and 0.7×1016 to 1.0×1016(molecule·cm-2)in Xiling Mountain were obtained respectively. The NO2 concentrations of atmosphere showed an increasing tendency with the rising temperature.
左浩毅1,高洁1,程娟1,郑玉臣2,杨经国1* . 太阳光谱方法测量成都地区大气二氧化氮浓度[J]. 光谱学与光谱分析, 2006, 26(07): 1356-1359.
ZUO Hao-yi1, GAO Jie1, CHENG Juan1, Andrew Yuk Sun Cheng2, YANG Jing-guo1* . Measurement of NO2 Concentration in Atmosphere in Chengdu by Solar Spectra . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(07): 1356-1359.
