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
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.
刘 宇,刘文清*,阚瑞峰,司福祺,许振宇,胡仁志,谢品华 . 超高分辨差分吸收光谱技术测量火焰中OH自由基[J]. 光谱学与光谱分析, 2011, 31(10): 2659-2663.
LIU Yu, LIU Wen-qing*, KAN Rui-feng, SI Fu-qi, XU Zhen-yu, HU Ren-zhi, XIE Pin-hua . Measurement of OH Radicals in Flame with High Resolution Differential Optical Absorption Spectroscopy . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(10): 2659-2663.