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Quartz-enhanced photoacoustic spectroscopy (QEPAS) and Beat Frequency-QEPAS techniques for air pollutants detection: A comparison in terms of sensitivity and acquisition time

التفاصيل البيبلوغرافية
العنوان: Quartz-enhanced photoacoustic spectroscopy (QEPAS) and Beat Frequency-QEPAS techniques for air pollutants detection: A comparison in terms of sensitivity and acquisition time
المؤلفون: Biao Li, Giansergio Menduni, Marilena Giglio, Pietro Patimisco, Angelo Sampaolo, Andrea Zifarelli, Hongpeng Wu, Tingting Wei, Vincenzo Spagnolo, Lei Dong
المصدر: Photoacoustics, Vol 31, Iss , Pp 100479- (2023)
بيانات النشر: Elsevier, 2023.
سنة النشر: 2023
المجموعة: LCC:Physics
LCC:Acoustics. Sound
LCC:Optics. Light
مصطلحات موضوعية: QEPAS, BF-QEPAS, Air pollutants detection, Multigas measurement, NO detection, Physics, QC1-999, Acoustics. Sound, QC221-246, Optics. Light, QC350-467
الوصف: In this work, a comparison between Quartz Enhanced Photoacoustic Spectroscopy (QEPAS) and Beat Frequency-QEPAS (BF-QEPAS) techniques for environmental monitoring of pollutants is reported. A spectrophone composed of a T-shaped Quartz Tuning Fork (QTF) coupled with resonator tubes was employed as a detection module. An interband cascade laser has been used as an exciting source, allowing the targeting of two NO absorption features, located at 1900.07 cm−1 and 1900.52 cm−1, and a water vapor absorption feature, located at 1901.76 cm−1. Minimum detection limits of 90 ppb and 180 ppb were achieved with QEPAS and BF-QEPAS techniques, respectively, for NO detection. The capability to detect multiple components in the same gas mixture using BF-QEPAS was also demonstrated.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2213-5979
Relation: http://www.sciencedirect.com/science/article/pii/S2213597923000320; https://doaj.org/toc/2213-5979
DOI: 10.1016/j.pacs.2023.100479
URL الوصول: https://doaj.org/article/bddeee0c17db4b67ae90512e83e21f74
رقم الأكسشن: edsdoj.bddeee0c17db4b67ae90512e83e21f74
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:22135979
DOI:10.1016/j.pacs.2023.100479