Study on the Measurement of C6H6 in the 195 similar to 208 nm Band Based on Differential Absorption Spectroscopy
文献类型：期刊论文
| 作者 | Ye Kai-di1,4; Qin Min1 ; Fang Wu1; Duan Jun1; Tang Ke1,4; Meng Fan-hao1,4; Zhang He-lu1,4; Xie Pin-hua1,2,4; Xu Wen-bin3
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| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
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| 出版日期 | 2021-10-01 |
| 卷号 | 41 |
| 关键词 | Differential optical absorption spectroscopy DOAS Benzene Deep ultraviolet |
| ISSN号 | 1000-0593 |
| DOI | 10.3964/j.issn.1000-0593(2021)10-3007-07 |
| 通讯作者 | Qin Min(mqin@aiofm.ac.cn) |
| 英文摘要 | Substituents form BTX (benzene, toluene, xylene, etc) by replacing the H atom on the benzene ring. The unfixed pi-bond electrons on the benzene ring of the common structure are stimulated, which makes BTX have a distinct characteristic absorption structure in the ultraviolet band of 240-280 nm. BTX in this atmosphere can be quantified by the differential optical absorption spectroscopy ( DOAS) method. However, problems need to be taken into consideration when adopting the measurement of this band, such as the non-linear absorption of O-2, cross interference between BTX due to the existence of similar absorption structures, and overlapping absorption interference of other gases. Benzene has a large absorption cross-section (2. 417X 10(-17) cm(-2) center dot molecule (-1)) in the deep ultraviolet band of 195 similar to 208 nm, which is about nine times the cross-section size (2. 6X 10(-12) cm(-2) center dot molecule(-1)) at 240 similar to 260 nm. Therefore, according to the characteristics of benzene in the deep ultraviolet 195 similar to 208 nm band, a portable differential optical absorption spectrum (DOAS) quantitative method is studied. This band is used to carry out the quantitative spectral analysis of benzene for the first time and applied to the actual field observation. The optimal retrieval band of benzene spectral quantification is obtained by establishing the two-dimensional correlation matrix of the differential absorption cross sections of benzene and the interfering gases SO2, NH3, CS2, and NO. Furthermore, the effect of retrieval of benzene in 195 similar to 208 nm band was evaluated by carrying out mixed gas experiments with different concentrations of benzene, SO2 and NH3 under laboratory conditions. The experimental results show that the detection limit of the spectral retrieval using the 195 similar to 208 nm band reaches 17. 6 mu g center dot m(3), the relative measurement error between the measured concentration of the spectral retrieval and the configured concentration is less than 5% and the relative standard deviation (RSD) is less than 3%. Compared with the retrieval results in the 240 similar to 260 nm band, the relative error is less than 5%. In the actual field condition, a portable differential optical absorption spectroscopy (DOAS) system was used to obtain the atmospheric measurement spectrum of 190 similar to 300 nm, and the DOAS method was applied to analyze and combine with the GPS information to obtain the pollution concentration distribution of benzene in a chemical industrial park. The experimental results show that the deep ultraviolet band of 195 similar to 208 nm can also be adapted to the quantitative analysis of benzene. And compared with the retrieval results of the 240 similar to 260 nm band, the correlation coefficient of the two retrieval bands has reached 0. 98 and the relative error is less than 10%. |
| WOS关键词 | HYDROCARBONS ; BENZENE ; DOAS ; NO2 |
| WOS研究方向 | Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000715857400003 |
| 出版者 | OFFICE SPECTROSCOPY & SPECTRAL ANALYSIS |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/126754]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Qin Min |
| 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, CAS Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 3.Sci & Technol Opt Radiat Lab, Beijing 100854, Peoples R China 4.Univ Sci & Technol China, Sci Isl Branch Grad Sch, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye Kai-di,Qin Min,Fang Wu,et al. Study on the Measurement of C6H6 in the 195 similar to 208 nm Band Based on Differential Absorption Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2021,41. |
| APA | Ye Kai-di.,Qin Min.,Fang Wu.,Duan Jun.,Tang Ke.,...&Xu Wen-bin.(2021).Study on the Measurement of C6H6 in the 195 similar to 208 nm Band Based on Differential Absorption Spectroscopy.SPECTROSCOPY AND SPECTRAL ANALYSIS,41. |
| MLA | Ye Kai-di,et al."Study on the Measurement of C6H6 in the 195 similar to 208 nm Band Based on Differential Absorption Spectroscopy".SPECTROSCOPY AND SPECTRAL ANALYSIS 41(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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