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题名: Effect of atmospheric interfering absorption on measurement of BTX by DOAS
作者: Peng, Fu-min1, 2;  Xie, Pin-hua1;  Li, Hai-yang3;  Zhang, Ying-hua1;  Wang, Jun-de3;  Liu, Wen-qing1
通讯作者: Pin-hua Xie
关键词: differential optical absorption spectroscopy ;  BTX ;  Herzberg band ;  O-2 dimer
刊名: CHINESE JOURNAL OF CHEMICAL PHYSICS
发表日期: 2008-06-01
DOI: 10.1088/1674-0068/21/03/202-210
卷: 21, 期:3, 页:202-210
收录类别: SCI
文章类型: Article
部门归属: 1
项目归属: 102
产权排名: 3;3
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Physics
英文摘要: It was reported on the elimination of interfering absorption of BTX. the absorption of O-2 includes different absorption bands, which change differently when the partial pressure of oxygen is varied. These cause the nonlinear absorption Of O-2 and the observed band shape to vary with the column density Of O-2 The absorption ratios of molecular absorption in each of the Herzberg hands and dimer absorptions, as well as the contribution to the correction error of molecular absorption, are studied based on the characteristic of these absorption bands. The optimized way, to eliminate the interfering absorption is obtained in the end and the effectiveness Of using interpolation proposed by Volkamer et al. to remove O-2 absorption is proved again. As to O-3 and SO2, the effect of the thermal effect of characteristic spectra on the elimination error of their absorption is studied. Solutions to these problems are discussed and demonstrated together with methods to optimize the interpolation of spectra. As a sample application, differential optical absorption spectroscopy (DOAS) measurements of BTX are carried out. Results show a low detection limit and the good correlation with point instruments are achieved. All these prove the feasibility of using spectral interpolation to improve the accuracy of DOAS measurements of aromatic hydrocarbons for practical purposes.
关键词[WOS]: FOURIER-TRANSFORM SPECTROSCOPY ;  CROSS-SECTION MEASUREMENTS ;  HERZBERG-I BANDS ;  AROMATIC-HYDROCARBONS ;  URBAN AIR ;  295 K ;  O-2 ;  OXYGEN ;  BENZENE ;  TOLUENE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000258577500002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101553
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Environm Opt & Technol, Anhui Inst Opt & Fine Mech, Hefei 230031, Peoples R China
2.Anhui Univ, Coll Chem & Chem Engn, Hefei 230039, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Peng, Fu-min,Xie, Pin-hua,Li, Hai-yang,et al. Effect of atmospheric interfering absorption on measurement of BTX by DOAS[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2008,21(3):202-210.
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