二硫化碳气体近紫外吸收截面积测定  

Measurement of Near-UV Absorption Cross Sections of CS_2

作　　者：汪海涛[1] 胡长江[1] 牟玉静[1] Abdelwahid Mellouki 

机构地区：[1]中国科学院生态环境研究中心,北京100085 [2]Centre National de Recherche Scientifique,Institut de Combustion,Aérothermique

出　　处：《光谱学与光谱分析》2009年第6期1586-1589,共4页Spectroscopy and Spectral Analysis

基　　金：国家基础研究"973"项目(2005CB422201);国家自然科学基金项目(20677067;20577064)资助

摘　　要：利用二极管阵列光谱仪,室温条件下,在波长220～380 nm的波段内,测量了CS2的紫外吸收截面积。发现CS2在315 nm处具有较大吸收,其值为σ=7.184×10-20cm2.molecule-1。与文献报道进行了比对,吻合较好,并利用所获得的数据对CS2大气光解寿命进行了评估。The UV-absorption cross sections of CS2 are reported. The absorption spectra were measured by using a diode array spectrometer over the wavelength range of 220-380 nm at room temperature （298±3）K. The maximum absorption cross section appeared around 315 nm with the value of a（315 nm） = 7. 184× 10^-20 cm^2 · molecule^-1. The measured data by this study were in good agreement with that reported in the literature, and used to estimate the photolysis of the CS2 in the atmosphere.

关 键 词：二硫化碳 紫外吸收截面积 光解 二极管阵列光谱仪 

分 类 号：O436.2[机械工程—光学工程]