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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >Application of a multi-laser tunable diode laser absorption spectrometer for atmospheric trace gas measurements at sub-ppbv levels
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Application of a multi-laser tunable diode laser absorption spectrometer for atmospheric trace gas measurements at sub-ppbv levels

机译:多激光可调谐二极管激光吸收光谱仪在亚ppbv级大气痕量气体测量中的应用

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We describe the application of a three-laser tunable diode laser absorption spectrometer (TDLAS), called 'tracer in-situ TDLAS for atmospheric research' (TRISTAR), to measure nitrogen dioxide (NO,), formaldehyde (HCHO) and hydrogen peroxide (H2O2), during an intensive measurement campaign on Mt. Cimone (44degrees11'N, 10degrees42'E, 2165 m asl), Northern Appenines, Italy in June 2000 as part of the EU-project 'mineral dust and tropospheric chemistry' (MINATROC). The TRISTAR instrument was a major component of an instrument package, provided by the Max-Planck-Insitut fur Chemie, to investigate free tropospheric gas-phase chemistry over the Appenines. Here we discuss the optical, electronic, gas flow, and calibration setup of the TDLAS used during the campaign. We characterized extensively the instrument's performance during a preparatory phase in the laboratory and compared the laboratory results to the in-field results. Consistency checks with additional trace gas measurements obtained during the campaign create high confidence in the measured concentrations. Correlations between different trace gas species, along with other evaluation tools, allow a full chemical characterization of air masses to meet the goals of the campaign. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 18]
机译:我们描述了一种三激光可调二极管激光吸收光谱仪(TDLAS)的应用,该技术被称为``大气研究示踪剂TDLAS''(TRISTAR),用于测量二氧化氮(NO),甲醛(HCHO)和过氧化氢( H2O2),在Mt.作为欧盟项目“矿物尘和对流层化学”(MINATROC)的一部分,于2000年6月在意大利北部的Appenines的Cimone(北纬44度11'E,东经10°42'E,2165 m)。 TRISTAR仪器是Max-Planck-Insitut Fur Chemie提供的仪器套件的主要组成部分,用于研究Appenines上的对流层气相化学成分。在这里,我们讨论了战役期间使用的TDLAS的光学,电子,气体流量和校准设置。我们在实验室的准备阶段广泛地表征了仪器的性能,并将实验室结果与现场结果进行了比较。运动期间获得的其他痕量气体测量结果的一致性检查可对测量的浓度产生高度的信心。不同的痕量气体种类之间的相关性以及其他评估工具,可以对空气质量进行全面的化学表征,从而达到该运动的目标。 (C)2002 Elsevier Science B.V.保留所有权利。 [参考:18]

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