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题名: Effect of spectral resolution on the measurement of monoaromatic hydrocarbons by DOAS
作者: Peng Fumin1, 2;  Xee Pinhua1;  Mang Yinghua1;  Zhu Yanwu1;  Si Fuqi1;  Liu Wenqing1;  Wang Junde3
通讯作者: XIE Pinhua
关键词: differential optical absorption spectroscopy (DOAS) ;  monoaromatic hydrocarbons (MAHCs) ;  spectral resolution ;  characteristic absorption structure
刊名: JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
发表日期: 2008
卷: 20, 期:5, 页:632-640
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;7
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: The excellent response characteristics and detection sensitivity with much lower operational cost and the capability to discriminate between the isomer of some monoaromatic hydrocarbons (MAHCs) make differential optical absorption spectroscopy (DOAS) a powerful tool to trace concentration variation of MAHCs. But due to the similarity in chemical structure, those MAHCs have the similar overlapped characteristic absorption structures, which make the selection of instrumental parameter critical to the accurate detection of MAHCs. Firstly, the spectral resolution used in WAS system determines the nonlinear absorption of O(2) and the mass dependence of characteristic absorption structure; thereby it determines the effect of elimination error of O(2) absorption in the atmospheric spectra for the detection of MAHCs. Secondly, spectral resolution determines the differential absorption characteristics of twelve MAHCs representing major constituents in technical solvents used in the automobile industry and the interference of spectral overlapping. Thirdly, the spectral resolution determines the sensitivity, time resolution and linear range. So the spectral resolution range with,the best ratio of signal to noise is used to determine the most suitable spectral resolution range, as well as the spectral resolution range that ensure the characteristic absorption structure of MAHCs and the minimization of O(2) absorption interference. Finally, 0.15-0.16 nm (FWHM: full width at half maximum) is assumed to be closest to the optimum spectral resolution and it is confirmed by the results of practical measurement of MAHCs by DOAS.
关键词[WOS]: OPTICAL-ABSORPTION SPECTROSCOPY ;  FOURIER-TRANSFORM SPECTROSCOPY ;  CROSS-SECTION MEASUREMENTS ;  AROMATIC-HYDROCARBONS ;  295 K ;  BANDS ;  O-2 ;  SO2 ;  UV
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000255846200018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100737
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, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, 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 Fumin,Xee Pinhua,Mang Yinghua,et al. Effect of spectral resolution on the measurement of monoaromatic hydrocarbons by DOAS[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2008,20(5):632-640.
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