A Portable ppb-Level Formaldehyde Sensor for Real-Time Air Quality Monitoring

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Kun Duan
  • Junjun Wu
  • Tobias Grabe
  • Roland Lachmayer
  • Wei Ren

Externe Organisationen

  • The Chinese University of Hong Kong
  • Chongqing University
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer7001307
Seiten (von - bis)1-7
Seitenumfang7
FachzeitschriftIEEE Transactions on Instrumentation and Measurement
Jahrgang73
Frühes Online-Datum1 Dez. 2023
PublikationsstatusVeröffentlicht - Jan. 2024

Abstract

— We report the development of a battery-driven, portable, and ultrasensitive optical gas sensor for parts per billion (ppb)-level formaldehyde (H2CO) diagnostics. The sensor consists of an interband cascade laser exploiting the intense H2CO absorption line at 3.6 µm, an open-path multipass gas cell with 26.4-m pathlength, and homemade electronics for signal processing, data acquisition, and results display. Besides the advantage of being interference-free from other atmospheric constituents, the Allan deviation analysis reveals a minimum detection limit (MDL) of 1.42 ppb at a time resolution of 0.2 s. This limit can be enhanced to 43 parts per trillion (ppt) with an average time of 230 s. Ultimately, we successfully showcased the practical use of the portable sensor for detecting indoor H2CO.

ASJC Scopus Sachgebiete

Zitieren

A Portable ppb-Level Formaldehyde Sensor for Real-Time Air Quality Monitoring. / Duan, Kun; Wu, Junjun; Grabe, Tobias et al.
in: IEEE Transactions on Instrumentation and Measurement, Jahrgang 73, 7001307, 01.2024, S. 1-7.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Duan K, Wu J, Grabe T, Lachmayer R, Ren W. A Portable ppb-Level Formaldehyde Sensor for Real-Time Air Quality Monitoring. IEEE Transactions on Instrumentation and Measurement. 2024 Jan;73:1-7. 7001307. Epub 2023 Dez 1. doi: 10.1109/TIM.2023.3338688
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