| 酒精蒸汽近红外高分辨光谱获取方法研究 |
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| 引用本文： | 耿辉,张玉钧,刘文清,刘建国,阮俊,许振宇,姚路,阚瑞峰.酒精蒸汽近红外高分辨光谱获取方法研究[J].大气与环境光学学报,2012,7(1):57-62. |
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| 作者姓名： | 耿辉 张玉钧 刘文清 刘建国 阮俊 许振宇 姚路 阚瑞峰 |
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| 作者单位： | 中国科学院安徽光学精密机械研究所中国科学院环境光学与技术重点实验室,安徽合肥,230031 |
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| 基金项目： | 安徽省科技攻关项目“激光遥测酒驾预警系统研发”(1001130610) |
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| 摘 要： | 酒精是相对复杂的分子,在常压下为宽带吸收,其OH基团的泛频吸收区位于近红外7000～7300cm-1处.利用可调谐二极管激光光谱学(TDLAS)方法测量了含有少量水汽的酒精蒸汽在7180 cm-1附近的吸收谱线,通过多项式拟合消除水汽吸收谱线干扰,获得了酒精蒸汽的特征吸收光谱,其半高半宽为1.3cm-1;并对不同浓度酒精蒸汽吸收谱线线型做了研究,证明其线型与酒精分压不相关,为发展基于TDLAS酒驾遥测技术奠定了基础.
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| 关 键 词： | 吸收光谱 酒精蒸汽 可调谐二极管激光吸收光谱 宽带吸收 多项式拟合 |
| 收稿时间： | 2011/8/31 |
Acquisition Method of High Resolution Spectra of Ethanol Vapor in Near-IR Range |
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| GENG Hui
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ZHANG Yu-jun
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LIU Wen-qing
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LIU Jian-guo
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RUAN Jun
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XU Zhen-yu
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YAO Lu
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KAN Rui-feng.Acquisition Method of High Resolution Spectra of Ethanol Vapor in Near-IR Range[J].Journal of Atmospheric and Environmental Optics,2012,7(1):57-62. |
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| Authors: | GENG Hui ZHANG Yu-jun LIU Wen-qing LIU Jian-guo RUAN Jun XU Zhen-yu YAO Lu KAN Rui-feng |
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| Affiliation: | (Key Laboratory of Environment Optics and Technology,Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences,Hefei 230031,China) |
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| Abstract: | Ethanol is a relatively complex molecule which presents broadband absorption spectra at atmospheric pressure,its stretching overtones of OH bond is around 70007300 cm-1.The absorption spectrum of ethanol vapor with small amount of water vapor near 7180 cm-1 was acquired by adopting tunable diode laser absorption spectroscopy（TDLAS） method,an absorption feature with HWHH of approximately 1.3 cm-1 was obtained by eliminating the interference of water vapor with polynomial fitting.Study on the line-types of absorption spectra of ethanol vapor with different concentrations demonstrates that line-types have no dependence on partial pressure.This work laid the foundation for the research of ethanol remote sensing based on TDLAS. |
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| Keywords: | absorption spectrum ethanol vapor tunable diode laser absorption spectroscopy broadband absorption polynomial fitting |
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