| 光谱学与光谱分析 |
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| Measurement of OH Radicals in Flame with High Resolution Differential Optical Absorption Spectroscopy |
| LIU Yu, LIU Wen-qing*, KAN Rui-feng, SI Fu-qi, XU Zhen-yu, HU Ren-zhi, XIE Pin-hua |
| National Engineering and Technological Research Center for Environmental Optic Monitoring Instrument, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Heifei 230031, China |
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Abstract The present paper describes a new developed high resolution differential optical absorption spectroscopy instrument used for the measurement of OH radicals in flame. The instrument consists of a Xenon lamp for light source; a double pass high resolution echelle spectrometer with a resolution of 3.3 pm; a multiple-reflection cell of 20 meter base length, in which the light reflects in the cell for 176 times, so the whole path length of light can achieve 3 520 meters. The OH radicals’6 absorption lines around 308 nm were simultaneously observed in the experiment. By using high resolution DOAS technology, the OH radicals in candles, kerosene lamp, and alcohol burner flames were monitored, and their concentrations were also inverted.
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Received: 2010-11-25
Accepted: 2011-03-03
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Corresponding Authors:
LIU Wen-qing
E-mail: wqliu@aiofm.ac.cn
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