| Title: | Potential of a Miniature Spectral Analyzer for District-Scale Monitoring of Multiple Gaseous Air Pollutants |
| Author(s): | Fathy A; Gnambodoe-Capochichi M; Sabry YM; Anwar M; Ghoname AO; Saeed A; Leprince-Wang Y; Khalil D; Bourouina T; |
| Address: | "ESYCOM, UMR 9007 CNRS, Univ Gustave Eiffel, 77454 Marne-la-Vallee, France. Si-Ware Systems, Cairo 11361, Egypt. Faculty of Engineering, Ain-Shams University, Cairo 11535, Egypt. CINTRA, IRL 3288 CNRS-NTU-THALES, Nanyang Technological University, Singapore 637553, Singapore" |
| ISSN/ISBN: | 1424-8220 (Electronic) 1424-8220 (Linking) |
| Abstract: | "Gas sensors that can measure multiple pollutants simultaneously are highly desirable for on-site air pollution monitoring at various scales, both indoor and outdoor. Herein, we introduce a low-cost multi-parameter gas analyzer capable of monitoring multiple gaseous pollutants simultaneously, thus allowing for true analytical measurement. It is a spectral sensor consisting of a Fourier-transform infrared (FTIR) gas analyzer based on a mid-infrared (MIR) spectrometer. The sensor is as small as 7 x 5 x 2.5 cm(3). It was deployed in an open-path configuration within a district-scale climatic chamber (Sense City, Marne-la-Vallee, France) with a volume of 20 x 20 x 8 m(3). The setup included a transmitter and a receiver separated by 38 m to enable representative measurements of the entire district domain. We used a car inside the climatic chamber, turning the engine on and off to create time sequences of a pollution source. The results showed that carbon dioxide (CO(2)) and water vapor (H(2)O) were accurately monitored using the spectral sensor, with agreement with the reference analyzers used to record the pollution levels near the car exhaust. Furthermore, the lower detection limits of CO, NO(2) and NO were assessed, demonstrating the capability of the sensor to detect these pollutants. Additionally, a preliminary evaluation of the potential of the spectral sensor to screen multiple volatile organic compounds (VOCs) was conducted at the laboratory scale. Overall, the results demonstrated the potential of the proposed multi-parameter spectral gas sensor in on-site gaseous pollution monitoring" |
| Keywords: | Mems air pollution mid-infrared spectroscopy multi-parameter gas sensing open FTIR; |
| Notes: | "PubMed-not-MEDLINEFathy, Alaa Gnambodoe-Capochichi, Martine Sabry, Yasser M Anwar, Momen Ghoname, Amr O Saeed, Ahmed Leprince-Wang, Yamin Khalil, Diaa Bourouina, Tarik eng Switzerland 2023/07/29 Sensors (Basel). 2023 Jul 12; 23(14):6343. doi: 10.3390/s23146343" |
