| 光谱学与光谱分析 |
|
|
|
|
|
| Research on Improving Sensitivity of the Characteristic Spectrnm in Micro-Gas Monitor |
| SUN Yun-qiang, LU Xu-tao |
1. National Key Laboratory for Electronic Measurement Technology of North University of China, Taiyuan 030051, China
2. Technical Industry Place of North University of China, Taiyuan 030051, China |
|
|
|
|
Abstract In order to realize the indoor micro noxious gas real-time monitor, and enhance measuring accuracy based on the characteristic spectrum examination method, a characteristic wavelengths filtration window was designed, in which the container is full with the highly concentrated testing gas. The container with the highly concentrated testing gas was used as the filtration window, the standard air as the reference window, the air chamber sufficient testing gas for testing density. The experiment demonstrated that using the WQF-520-FTIR infrared spectroscope to obtain the infrared absorption spectrum of dipropyl sebacate, there were mainly four characteristic wavelength lines: 3.385 26, 3.417 64, 5.797 11, and 8.561 65 μm, and the corresponding extinction was 1.520 0, 1.542 1, 2.431 8 and 1.352 6 respectively. The smallest content examined was 50 ppb, but using the characteristic wavelengths filtration window, the method could realize the 10-4 nm magnitude alignment. The sensitivity was enhanced nearly 10 times, and the characteristic wavelengths filtration window method has the merits of high sensitivity, no discontinuity, real-time examination, and so on.
|
|
Received: 2009-12-02
Accepted: 2010-03-06
|
|
|
|
Corresponding Authors:
SUN Yun-qiang
E-mail: sunyunqiang123@163.com
|
|
[1] William A Brainard, John Ferrante. NASA Technical, 1979, 3(1): 1554.
[2] TU Zhen-hua, JI Bao-ping, MENG Chao-ying(屠振华, 籍保平, 孟超英). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2009, 29(10): 2760.
[3] Birkbeck College PCE/PCF/PCEF/ Micro.，2005, 21(5): 1.
[4] Jiang Meng, Guan Zu-guang. IEEE Sensors Journal, 2007, 28(31): 1283.
[5] Julie Lawson, Nico Nieboer. OTB Research Institute, 2008, 26(1): 17.
[6] SHENG Chun-qi, JIANG Ke-zhi, NI Yong(盛春荠, 蒋可志, 倪 勇). Journal of Analytical Science(分析科学学报)，2009, 25(5): 615.
[7] Haring R, Matz G, Rusch P. SPIE, 2005, 59(95): 174.
[8] LI Su-wen, XIE Pin-hua, LI Yu-jin(李素文, 谢品华, 李玉金). Acta Optica Sinica(光学学报), 2006, 26(1): 1601.
[9] JIANG Fei-hong(江飞虹). Journal of Applied Optics(应用光学). 2009, 30(4): 687.
[10] YANG Jian-lei, ZHU Tuo, WU Hao(杨建磊，朱 拓，武 浩). Journal of Optoelectronics·Laser(光电子·激光)，2009, 20(4): 494.
[11] Sirisomboon P, Tanaka M, Fujita S, et al. Journal of Food Engineering, 2007, 78: 701.
|
| [1] |
ZHANG Xu1, BAI Xue-bing1, WANG Xue-pei2, LI Xin-wu2, LI Zhi-gang3, ZHANG Xiao-shuan2, 4*. Prediction Model of TVB-N Concentration in Mutton Based on Near Infrared Characteristic Spectra[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(11): 3377-3384. |
| [2] |
XU Li-jia1, CHEN Ming1, WANG Yu-chao1, CHEN Xiao-yan2, 3, LEI Xiao-long1*. Study on Non-Destructive Detection Method of Kiwifruit Sugar Content Based on Hyperspectral Imaging Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(07): 2188-2195. |
| [3] |
YI Ding-rong1, ZHAO Yan-li1, KONG Ling-hua2*, WANG Wen-qi1, HUANG Cai-hong1. Miniature Snapshot Narrow Band Multi-Spectral Imaging Technology for Cervical Cancer Screening[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(01): 157-161. |
| [4] |
YANG Chang-bao1, GAO Wen-bo1*, HOU Guang-yu2, LI Xing-zhe1, GAO Man-ting1. Response Relationship between Feldspar Content and Characteristic Spectra in Igneous Rocks[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(07): 2077-2082. |
| [5] |
WU Jing-zhu1，2, DONG Wen-fei1, DONG Jing-jing1, CHEN Yan1, MAO Wen-hua1，3, LIU Cui-ling1. Research on Optimization of Wheat Seed Germination Rate NIR Model Based on Si-cPLS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(04): 1114-1117. |
| [6] |
CHU Xuan1, WANG Wei2, ZHAO Xin1, JIANG Hong-zhe1, WANG Wei1*, LIU Sheng-quan1 . Detection of Camellia Oleifera Oil Adulterated with Sunflower Oil with Near Infrared (NIR) Spectroscopy and Characteristic Spectra [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(01): 75-79. |
| [7] |
WANG Yin, ZHAO Nan-jing*, LIU Wen-qing, YU Yang, FANG Li, MENG De-shuo, HU Li, ZHANG Da-hai, MA Ming-jun, XIAO Xue, WANG Yu, LIU Jian-guo. The Research on Separating and Extracting Overlapping Spectral Feature Lines in LIBS Using Damped Least Squares Method [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(02): 309-314. |
| [8] |
WU Jing-zhu1, WANG Feng-zhu2, WANG Li-li2, ZHANG Xiao-chao2, MAO Wen-hua2* . Research on Fast Detecting Tomato Seedlings Nitrogen Content Based on NIR Characteristic Spectrum Selection [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(01): 99-103. |
| [9] |
ZENG Ya-ling, JIANG Long, CAI Xiao-yu, LI Yu* . Identification of the Characteristic Vibrations for 16 PAHs Based on Raman Spectrum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(11): 2999-3004. |
| [10] |
YANG Sheng-wei1, LIU Zhen2*, WU Ming-guang3, ZHANG Zhen-jie2 . Research on Characteristic Spectrum Extracting and Matching for High-Fidelity Reproduction[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(06): 1635-1639. |
| [11] |
RAN Xia1, MU Lan1*, LIU Ren-xiang1, CONG Hang1, ZHANG Qing-min2, WANG Fang2 . Study on Two Different Aromas Styles of Tobacco from Guizhou by Characteristics Spectroscopic Methods[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(03): 777-781. |
| [12] |
YANG Qiang, GE Liang-quan, GU Yi, HUA Yong-tao, LUO Yao-yao . Theoretical Calculation and Simulation Research on Micro X-Ray Tube Target Thickness and Spectra [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(04): 1130-1134. |
| [13] |
WANG Zhi-hong, LIU Jie, CHEN Xiao-chao, SUN Yu-yang, YU Yang, LIN Jun*. Effect of Near Infrared Spectrum on the Precision of PLS Model for Oil Yield from Oil Shale [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(10): 2770-2774. |
| [14] |
TANG Xiao-jun, HAO Hui-min, LI Yu-jun, LIU Jun-hua. Analysis of Mixed Alkane Gas Based on Tikhonov Regularization Spectra Selection and Optimal Neural Network Parameters Selection [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(06): 1673-1677. |
| [15] |
MENG Qing-xia1，PANG Qi-chang1*，MA Ji2，ZHANG Hong-wei2, ZHAO Jing1, 3 . Application of Spectral Imaging Analysis in the Sibship Discussion of Folium Uncariae [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(01): 219-222. |
|
|
|
|
