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基于室温连续量子级联激光器的HONO气体检测

Nitrous Acid Measurement Based on Room-Temperature Continuous Wave Quantum Cascade Laser

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摘要

采用8 μm室温连续量子级联激光器开展对HONO的痕量监测。利用纯甲烷气体估算和描述该装置的特性,用直接吸收光谱技术结合125 m的多次反射吸收池进行HONO气体检测。由H2SO4和NaNO2发生化学反应而产生的HONO气体浓度用一个溶蚀器系统和一个NOx分析仪来量化,得到HONO的最低探测浓度在1 s的积分时间内为7.3 μg/m3。研究了由光学池壁表面而导致的HONO的衰减效应并得到一个反应率常数,这个常数有望应用于真实大气HONO的现场测量,特别是采用吸收池的测量。

Abstract

The results of HONO trace detection using mid-infrared tunable laser absorption spectroscopy technology based on the 8 μm room-temperature continuous wave quantum cascade laser are reported. The characteristics of the device are estimated and described with pure methane gas. Direct absorption spectroscopy is applied to trace gaseous HONO detection via a 125 m long multi-pass cell. The sensitivity of the instrument is evaluated using HONO sample generated by chemical reaction of H2SO4 and NaNO2. The generated HONO concentration is quantified by means of a denuder system associated with a conventional NOx analyzer, and the minimum detectable HONO concentration is found to be about 7.3 μg/m3 in 1 s integrated time. HONO losses resulting from the optical cell wall are experimentally investigated. The rate constant of HONO determined in the present work might be helpful for future field measurements of HONO, especially when an absorption cell is used.

Newport宣传-MKS新实验室计划
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中图分类号:O433.1

DOI:10.3788/aos201333.0430002

所属栏目:光谱学

责任编辑:李文喆  信息反馈

基金项目:国家863计划(2007AA06Z420)和国家自然科学基金青年科学基金项目(11204319)资助课题。

收稿日期:2012-11-16

修改稿日期:2012-12-13

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作者单位    点击查看

崔小娟:中国科学院安徽光学精密机械研究所安徽省光子器件与材料重点实验室, 安徽 合肥 230031
董凤忠:中国科学院安徽光学精密机械研究所安徽省光子器件与材料重点实验室, 安徽 合肥 230031
陈卫东:法国滨海大学大气物理化学实验室, 法国 里尔 敦刻尔克 59140
刘文清:中国科学院安徽光学精密机械研究所安徽省光子器件与材料重点实验室, 安徽 合肥 230031
Eric Fertein:法国滨海大学大气物理化学实验室, 法国 里尔 敦刻尔克 59140

联系人作者:崔小娟(cuixiaojuan@aiofm.ac.cn)

备注:崔小娟(1982—),女,博士后,主要从事环境光学监测技术方面的研究。

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引用该论文

Cui Xiaojuan,Dong Fengzhong,Chen Weidong,Liu Wenqing,Eric Fertein. Nitrous Acid Measurement Based on Room-Temperature Continuous Wave Quantum Cascade Laser[J]. Acta Optica Sinica, 2013, 33(4): 0430002

崔小娟,董凤忠,陈卫东,刘文清,Eric Fertein. 基于室温连续量子级联激光器的HONO气体检测[J]. 光学学报, 2013, 33(4): 0430002

被引情况

【1】魏敏,刘建国,阚瑞峰,王薇,姚路,许振宇,袁松,戴云海,贾良权. 基于量子级联激光器的温室气体测量方法研究. 光学学报, 2014, 34(12): 1230003--1

【2】孙鹏帅,张志荣,夏滑,庞涛,吴边,崔小娟,沈凤娇,王煜,董凤忠. 基于波长调制技术的温度实时测量方法研究. 光学学报, 2015, 35(2): 230001--1

【3】崔小娟,董凤忠,张志荣,庞涛,夏滑,吴边,孙鹏帅. 基于二次谐波调制技术提高HONO测灵敏度的方法研究. 光学学报, 2015, 35(6): 630006--1

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