Development of onsite measurement system of atmospheric nitrous acid

大气亚硝酸现场测量系统的研制

• 批准号: 22310007
• 负责人: TONOKURA Kenichi
• 金额: $ 12.15万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22310007/
• 关键词: 亜硝酸; オンサイト計測; 分光計測; 環境計測; レーザー分光; 大気化学

Nitrous acid (HONO) is a significant source of hydroxyl (OH) radicals and an indoor pollutant. HONO is difficult to accurately measure since the species is prone to losses due to its high reactivity and solubility. Thus, this research concentrates on the development of a measurement system utilizing cavity ring down spectroscopy (CRDS) and differential optical absorption spectroscopy (DOAS). The former is used to provide a basic detection limit of HONO and to determine HONO’s absorption cross-section in the mid-IR region while the latter is used to increase the sensitivity of the system and improve on the detection limit. The study also includes examination of the effects of temperature, carrier gas flow rate and reactant amount on the HONO synthesis. Current results show an encouraging detection limit and that the reaction synthesis yields HONO of satisfactory purity.

亚硝酸(HONO)是羟基自由基的重要来源，也是一种室内污染物。HONO很难准确测量，因为该物种由于其高反应性和溶解性而容易损失。因此，本研究致力于开发一种利用腔衰荡光谱(CRDS)和差分光吸收光谱(DOAS)的测量系统。前者用于提供HONO的基本检测下限，并用于确定HONO在中红外区域的吸收截面；后者用于提高系统的灵敏度和改进检测下限。研究还考察了温度、载气流量和反应物用量对HONO合成的影响。目前的结果表明，检测下限令人鼓舞，反应合成得到了令人满意的纯度的HONO。

项目成果

Measurement of atmospheric NO2using mid-infrared cavity ring-down spectroscopy

中红外腔衰荡光谱法测量大气中NO2

• 发表时间: 2011
• 作者: コリントー;高橋遼;林瑠美子;山本征生;戸野倉賢一
• 通讯作者: 戸野倉賢一

連続発振レーザーキャビティリングダウン吸収分光法による亜酸化窒素および亜硝酸の大気計測

连续波激光腔衰荡吸收光谱法测量大气中一氧化二氮和亚硝酸盐

• 发表时间: 2013
• 作者: 高橋遼;戸野倉賢一
• 通讯作者: 戸野倉賢一

Monitoring of atmospheric nitrogen dioxide by pulsed differential optical absorption spectroscopy with two different light paths

两种不同光路的脉冲差分光吸收光谱监测大气二氧化氮

• 发表时间: 2012
• 期刊: J. Environ. Monitor.
• 作者: Y. Kambe;Y. Yoshii;K. Takahashi;K. Tonokura
• 通讯作者: K. Tonokura

Measurement of atmospheric NO2 using mid-infrared cavity ring-down spectroscopy

使用中红外腔衰荡光谱法测量大气中的 NO2

• 发表时间: 2011
• 作者: コリントー;高橋遼;林瑠美子;山本征生;戸野倉賢一
• 通讯作者: 戸野倉賢一