Potential of a Miniature Spectral Analyzer for District-Scale Monitoring of Multiple Gaseous Air Pollutants
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 al...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/14/6343 |
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| author | Alaa Fathy Martine Gnambodoe-Capochichi Yasser M. Sabry Momen Anwar Amr O. Ghoname Ahmed Saeed Yamin Leprince-Wang Diaa Khalil Tarik Bourouina |
| author_facet | Alaa Fathy Martine Gnambodoe-Capochichi Yasser M. Sabry Momen Anwar Amr O. Ghoname Ahmed Saeed Yamin Leprince-Wang Diaa Khalil Tarik Bourouina |
| author_sort | Alaa Fathy |
| collection | DOAJ |
| description | 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 × 5 × 2.5 cm<sup>3</sup>. It was deployed in an open-path configuration within a district-scale climatic chamber (Sense City, Marne-la-Vallée, France) with a volume of 20 × 20 × 8 m<sup>3</sup>. 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<sub>2</sub>) and water vapor (H<sub>2</sub>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<sub>2</sub> 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. |
| first_indexed | 2024-03-11T00:40:13Z |
| format | Article |
| id | doaj.art-908def2139664da0a9c7741312b176ef |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T00:40:13Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-908def2139664da0a9c7741312b176ef2023-11-18T21:16:24ZengMDPI AGSensors1424-82202023-07-012314634310.3390/s23146343Potential of a Miniature Spectral Analyzer for District-Scale Monitoring of Multiple Gaseous Air PollutantsAlaa Fathy0Martine Gnambodoe-Capochichi1Yasser M. Sabry2Momen Anwar3Amr O. Ghoname4Ahmed Saeed5Yamin Leprince-Wang6Diaa Khalil7Tarik Bourouina8ESYCOM, UMR 9007 CNRS, Univ Gustave Eiffel, 77454 Marne-la-Vallée, FranceESYCOM, UMR 9007 CNRS, Univ Gustave Eiffel, 77454 Marne-la-Vallée, FranceSi-Ware Systems, Cairo 11361, EgyptSi-Ware Systems, Cairo 11361, EgyptSi-Ware Systems, Cairo 11361, EgyptSi-Ware Systems, Cairo 11361, EgyptESYCOM, UMR 9007 CNRS, Univ Gustave Eiffel, 77454 Marne-la-Vallée, FranceSi-Ware Systems, Cairo 11361, EgyptESYCOM, UMR 9007 CNRS, Univ Gustave Eiffel, 77454 Marne-la-Vallée, FranceGas 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 × 5 × 2.5 cm<sup>3</sup>. It was deployed in an open-path configuration within a district-scale climatic chamber (Sense City, Marne-la-Vallée, France) with a volume of 20 × 20 × 8 m<sup>3</sup>. 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<sub>2</sub>) and water vapor (H<sub>2</sub>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<sub>2</sub> 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.https://www.mdpi.com/1424-8220/23/14/6343air pollutionmulti-parameter gas sensingmid-infrared spectroscopyopen FTIRMEMS |
| spellingShingle | Alaa Fathy Martine Gnambodoe-Capochichi Yasser M. Sabry Momen Anwar Amr O. Ghoname Ahmed Saeed Yamin Leprince-Wang Diaa Khalil Tarik Bourouina Potential of a Miniature Spectral Analyzer for District-Scale Monitoring of Multiple Gaseous Air Pollutants Sensors air pollution multi-parameter gas sensing mid-infrared spectroscopy open FTIR MEMS |
| title | Potential of a Miniature Spectral Analyzer for District-Scale Monitoring of Multiple Gaseous Air Pollutants |
| title_full | Potential of a Miniature Spectral Analyzer for District-Scale Monitoring of Multiple Gaseous Air Pollutants |
| title_fullStr | Potential of a Miniature Spectral Analyzer for District-Scale Monitoring of Multiple Gaseous Air Pollutants |
| title_full_unstemmed | Potential of a Miniature Spectral Analyzer for District-Scale Monitoring of Multiple Gaseous Air Pollutants |
| title_short | Potential of a Miniature Spectral Analyzer for District-Scale Monitoring of Multiple Gaseous Air Pollutants |
| title_sort | potential of a miniature spectral analyzer for district scale monitoring of multiple gaseous air pollutants |
| topic | air pollution multi-parameter gas sensing mid-infrared spectroscopy open FTIR MEMS |
| url | https://www.mdpi.com/1424-8220/23/14/6343 |
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