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题名: The Effect of Resolution on the Measurement of Carbon Bisulfide by DOAS
作者: Peng Fu-min1, 2;  Lin Yi-hui1;  Xie Pin-hua1;  Wang Jun-de2;  Zhang Ying-hua1;  Qin Min1;  Liu Wen-qing1;  Li Hai-yang2
关键词: Spectral resolution ;  Detection limit ;  Characteristic absorption structure ;  Differential optical absorption spectroscopy
刊名: SPECTROSCOPY AND SPECTRAL ANALYSIS
发表日期: 2008-11-01
DOI: 10.3964/j.issn.1000-0593(2008)11-2473-05
卷: 28, 期:11, 页:2473-2477
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Spectroscopy
研究领域[WOS]: Spectroscopy
英文摘要: Featuring excellent response characteristics and detection sensitivity and with much lower operational cost, differential optical absorption spectroscopy (DOAS) can be a powerful tool to trace the concentration variation of carbon bisulfide (CS(2)), a kind of poisonous gas with bad smell. In the DOAS measurement, the accuracy of the carbon bisulfide results is determined by the selected spectral resolution. The present paper focuses on the effect of resolution on the detected characteristic absorption structure of CS(2) and the variation in differential cross section of CS(2) with the change in resolution, from which the effect of resolution on the detection limit of CS(2) is deduced. In the end, the functional dependence of the ratio of signal to noise (SIN) on the resolution is reduced by studying the relationship between light intensity and resolution. And the optimized resolution is determined as 0.41-0.50 nm (FWHM) with the lowest SIN. The optimized resolution range can yield high sensitivity, good selectivity and a reasonable time resolution for the accurate qualitative and quantitative analysis of CS(2) (the results of five different concentration cells show linear correlation with r=0.9999 and all the relative standard deviations are less than 0.3% with n=10). In the end, the long time, real time and continuous monitoring of CS(2) was carried out in the Fengtai District of Beijing, and a good result was obtained.
关键词[WOS]: DIFFERENTIAL OPTICAL-ABSORPTION ;  CROSS-SECTIONS ;  SPECTROSCOPY ;  DISULFIDE ;  EXPOSURE ;  SYSTEM ;  CH2O ;  CS2 ;  UV
语种: 英语
WOS记录号: WOS:000261459900003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141214
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.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Peng Fu-min,Lin Yi-hui,Xie Pin-hua,et al. The Effect of Resolution on the Measurement of Carbon Bisulfide by DOAS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2008,28(11):2473-2477.
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