Applicability of compact and useful PM2.5 instrument with gas sensors in Japan and Thailand
Sophisticated standard instruments are not always available for high-density multipoint air quality observations owing to their relatively high cost, large size, and high-power consumption. Low-cost sensors may be used as supportive or potential solutions for atmospheric observations. This study aim...
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Elsevier
2025-08-01
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| Series: | Atmospheric Environment: X |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590162125000401 |
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| author | Humm Kham Zan Zan Aung Suwanna Kitpati Boontanon Jiaru Li Yosuke Sakamoto Kentaro Murano Narin Boontanon Yoshizumi Kajii |
| author_facet | Humm Kham Zan Zan Aung Suwanna Kitpati Boontanon Jiaru Li Yosuke Sakamoto Kentaro Murano Narin Boontanon Yoshizumi Kajii |
| author_sort | Humm Kham Zan Zan Aung |
| collection | DOAJ |
| description | Sophisticated standard instruments are not always available for high-density multipoint air quality observations owing to their relatively high cost, large size, and high-power consumption. Low-cost sensors may be used as supportive or potential solutions for atmospheric observations. This study aimed to evaluate applicability of the compact and useful PM2.5 instrument with gas sensors (CUPI-G), which can measure real-time temperature, humidity, particulate matter (PM2.5), carbon monoxide (CO), nitric oxide (NO), nitrogen dioxide (NO2), and oxidant, Ox (O3+NO2), and to observe the respective air pollution patterns in the suburban areas of developed and developing countries, selected as Japan and Thailand, respectively. The CUPI-G was validated with collocated standard instruments at both sites using a mathematical correction method to improve reproducibility before observation. Air quality observations were conducted for two weeks respectively from June 1st to June 14th, 2022, in Kyoto City, Japan and from October 28th to November 12th, 2022, in Nong Khaem District, Bangkok Province, Thailand, using CUPI-G. In Japan, applicability of the CUPI-G revealed different correlations, r = −0.30 to 0.89 with data from the nearest air monitoring station. In Thailand, it achieved strong correlations, r = 0.71 to 0.82 with the results of the nearest station. This study revealed the applicability performance, aiding future deployment of the CUPI-G and corresponding air pollution characteristics at observatories. Our results suggest a better performance of CUPI-G at polluted sites and recommend its use in developing countries having less-developed sites with lack of routine measurement equipment. |
| format | Article |
| id | doaj-art-1ac121e93f7c41c9b6a96e1a67b7fbc3 |
| institution | Matheson Library |
| issn | 2590-1621 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Atmospheric Environment: X |
| spelling | doaj-art-1ac121e93f7c41c9b6a96e1a67b7fbc32025-07-31T04:53:47ZengElsevierAtmospheric Environment: X2590-16212025-08-0127100350Applicability of compact and useful PM2.5 instrument with gas sensors in Japan and ThailandHumm Kham Zan Zan Aung0Suwanna Kitpati Boontanon1Jiaru Li2Yosuke Sakamoto3Kentaro Murano4Narin Boontanon5Yoshizumi Kajii6Graduate Program in Environmental and Water Resources Engineering, Department of Civil and Environmental Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, ThailandGraduate Program in Environmental and Water Resources Engineering, Department of Civil and Environmental Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand; Graduate School of Global Environmental Studies, Kyoto University, Kyoto, 606-8501, JapanNational Institute for Environmental Studies, Tsukuba, 303-8506, Japan; Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research Institute for Global Change (RIGC), Earth Surface System Research Center (ESS), Kanagawa, 236-0001, JapanNational Institute for Environmental Studies, Tsukuba, 303-8506, JapanIndependent Scholar, Kyoto, JapanResearch Center and Technology Development for Environmental Innovation, Faculty of Environment and Resource Studies, Mahidol University, Nakhon Pathom 73170, Thailand; Corresponding author. Faculty of Environment and Resource Studies, Mahidol University, Nakhon Pathom 73170, Thailand.School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, PR ChinaSophisticated standard instruments are not always available for high-density multipoint air quality observations owing to their relatively high cost, large size, and high-power consumption. Low-cost sensors may be used as supportive or potential solutions for atmospheric observations. This study aimed to evaluate applicability of the compact and useful PM2.5 instrument with gas sensors (CUPI-G), which can measure real-time temperature, humidity, particulate matter (PM2.5), carbon monoxide (CO), nitric oxide (NO), nitrogen dioxide (NO2), and oxidant, Ox (O3+NO2), and to observe the respective air pollution patterns in the suburban areas of developed and developing countries, selected as Japan and Thailand, respectively. The CUPI-G was validated with collocated standard instruments at both sites using a mathematical correction method to improve reproducibility before observation. Air quality observations were conducted for two weeks respectively from June 1st to June 14th, 2022, in Kyoto City, Japan and from October 28th to November 12th, 2022, in Nong Khaem District, Bangkok Province, Thailand, using CUPI-G. In Japan, applicability of the CUPI-G revealed different correlations, r = −0.30 to 0.89 with data from the nearest air monitoring station. In Thailand, it achieved strong correlations, r = 0.71 to 0.82 with the results of the nearest station. This study revealed the applicability performance, aiding future deployment of the CUPI-G and corresponding air pollution characteristics at observatories. Our results suggest a better performance of CUPI-G at polluted sites and recommend its use in developing countries having less-developed sites with lack of routine measurement equipment.http://www.sciencedirect.com/science/article/pii/S2590162125000401CUPI-GLow-cost sensorsAir pollutionJapanThailand |
| spellingShingle | Humm Kham Zan Zan Aung Suwanna Kitpati Boontanon Jiaru Li Yosuke Sakamoto Kentaro Murano Narin Boontanon Yoshizumi Kajii Applicability of compact and useful PM2.5 instrument with gas sensors in Japan and Thailand Atmospheric Environment: X CUPI-G Low-cost sensors Air pollution Japan Thailand |
| title | Applicability of compact and useful PM2.5 instrument with gas sensors in Japan and Thailand |
| title_full | Applicability of compact and useful PM2.5 instrument with gas sensors in Japan and Thailand |
| title_fullStr | Applicability of compact and useful PM2.5 instrument with gas sensors in Japan and Thailand |
| title_full_unstemmed | Applicability of compact and useful PM2.5 instrument with gas sensors in Japan and Thailand |
| title_short | Applicability of compact and useful PM2.5 instrument with gas sensors in Japan and Thailand |
| title_sort | applicability of compact and useful pm2 5 instrument with gas sensors in japan and thailand |
| topic | CUPI-G Low-cost sensors Air pollution Japan Thailand |
| url | http://www.sciencedirect.com/science/article/pii/S2590162125000401 |
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