Development of a measurement system of peroxy radicals using a chemical amplification/laser-induced fluorescence technique
Development of a measurement system of peroxy radicals using a chemical amplification/laser-induced fluorescence technique
复制标题
DOI：
10.1063/1.1666985
复制
发表时间：
2004-03
影响因子：
1.6
通讯作者：
Y. Sadanaga;J. Matsumoto;K. Sakurai;Ryoko Isozaki;Shungo Kato;T. Nomaguchi;H. Bandow;Y. Kajii
中科院分区：
文献类型：
--
作者：
Y. Sadanaga;J. Matsumoto;K. Sakurai;Ryoko Isozaki;Shungo Kato;T. Nomaguchi;H. Bandow;Y. Kajii
采用化学放大/激光诱导荧光（PERCA/LIF）技术开发了一种测量大气过氧自由基的仪器。小浓度的过氧自由基转化为大量的NO2，这是通过激光诱导荧光而不是鲁米诺化学发光来测量的。与鲁米诺化学发光法相比，使用 LIF 进行 NO2 测量预计具有高灵敏度、高选择性和快速响应时间等优点。使用该系统时，可以同时测量 NO2 和过氧自由基。目前反应管（1/4 英寸特氟龙）的最佳条件确定为反应管长度为 3 m，NO 和 CO 浓度分别为 3 ppmv 和 10%。进行了校准，包括过氧自由基检测灵敏度的湿度依赖性，并且在环境相对湿度为 ...
An instrument for measuring atmospheric peroxy radicals has been developed by chemical amplification/laser-induced fluorescence (PERCA/LIF) technique. The small concentration of peroxy radicals is converted to the large amount of NO2, which is measured by laser-induced fluorescence instead of luminol chemiluminescence. Several advantages, that is, high sensitivity, high selectively, and fast time response, are expected by use of LIF for the NO2 measurement, in comparison with luminol chemiluminescence. When using this system, simultaneous measurements of NO2 and peroxy radicals are available. The present optimum condition for the reaction tube (1/4 in. Teflon) was determined to be the reaction tube length of 3 m, the NO and CO concentrations of 3 ppmv and 10%, respectively. The calibration, including humidity dependence of the detection sensitivity of peroxy radicals, was conducted and the present detection limit of peroxy radicals was determined to be 2.7 and 3.6 pptv at the ambient relative humidity of ...