Performance Evaluation of a High-Precision Electrostatic PM2.5 Monitoring System for Field Surveillance: Integration of Unipolar Diffusion Charging and Electrometric Detection

Performance Evaluation of a High-Precision Electrostatic PM2.5 Monitoring System for Field Surveillance: Integration of Unipolar Diffusion Charging and Electrometric Detection | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Short Report Performance Evaluation of a High-Precision Electrostatic PM2.5 Monitoring System for Field Surveillance: Integration of Unipolar Diffusion Charging and Electrometric Detection Panich Intra, Wisanapat Rattanachan, Visut Asanavijit, Wanussuda Kamput, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8765729/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 5 You are reading this latest preprint version Abstract This study presents the design, theoretical modeling, and rigorous validation of a novel electrostatic particulate matter (PM) monitoring system developed for regional haze surveillance in Northern Thailand. Unlike conventional light-scattering techniques, this system utilizes a unipolar diffusion charging mechanism coupled with a Faraday cup electrometer to quantify aerosol mass concentration. The instrument integrates a custom-designed inertial impactor for PM2.5 segregation and a PID-controlled active flow system to stabilize aerodynamic cut-off points. Comprehensive laboratory calibration was performed using polydisperse and monodisperse aerosols (PSL/DVB), verified against reference standards (TSI SMPS 3938, TEOM 1405DF). The system demonstrated a highly linear electrometric response (R 2 > 0.98) over a dynamic range of 0.1–4,000 µg/m 3 , with a response time of 0.85) with standard beta-attenuation and oscillating microbalance instruments. These results indicate that the proposed system offers a robust, high-precision, and cost-effective alternative for dense air quality monitoring networks in high-pollution environments. Electrostatic precipitation Aerosol instrumentation Corona discharge Low-cost sensor Air quality monitoring PM2.5 Full Text Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 11 May, 2026 Reviewers invited by journal 27 Apr, 2026 Editor invited by journal 01 Mar, 2026 Editor assigned by journal 04 Feb, 2026 First submitted to journal 02 Feb, 2026 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-8765729","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Short Report","associatedPublications":[],"authors":[{"id":630152502,"identity":"de32b9b5-9ef1-4634-b9f9-9440cbcad27b","order_by":0,"name":"Panich 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Engineering","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"Electrostatic precipitation, Aerosol instrumentation, Corona discharge, Low-cost sensor, Air quality monitoring, PM2.5","lastPublishedDoi":"10.21203/rs.3.rs-8765729/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-8765729/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThis study presents the design, theoretical modeling, and rigorous validation of a novel electrostatic particulate matter (PM) monitoring system developed for regional haze surveillance in Northern Thailand. Unlike conventional light-scattering techniques, this system utilizes a unipolar diffusion charging mechanism coupled with a Faraday cup electrometer to quantify aerosol mass concentration. The instrument integrates a custom-designed inertial impactor for PM2.5 segregation and a PID-controlled active flow system to stabilize aerodynamic cut-off points. Comprehensive laboratory calibration was performed using polydisperse and monodisperse aerosols (PSL/DVB), verified against reference standards (TSI SMPS 3938, TEOM 1405DF). The system demonstrated a highly linear electrometric response (R\u003csup\u003e2\u003c/sup\u003e \u0026gt; 0.98) over a dynamic range of 0.1–4,000 µg/m\u003csup\u003e3\u003c/sup\u003e, with a response time of \u0026lt;1 second. Field deployment over 1,000 continuous hours confirmed a strong correlation (r \u0026gt; 0.85) with standard beta-attenuation and oscillating microbalance instruments. These results indicate that the proposed system offers a robust, high-precision, and cost-effective alternative for dense air quality monitoring networks in high-pollution environments.\u003c/p\u003e","manuscriptTitle":"Performance Evaluation of a High-Precision Electrostatic PM2.5 Monitoring System for Field Surveillance: Integration of Unipolar Diffusion Charging and Electrometric Detection","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-04-29 12:00:43","doi":"10.21203/rs.3.rs-8765729/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"reviewerAgreed","content":"","date":"2026-05-11T05:30:10+00:00","index":0,"fulltext":""},{"type":"reviewersInvited","content":"","date":"2026-04-27T08:14:40+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"Aerosol Science and Engineering","date":"2026-03-01T09:32:57+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2026-02-04T12:31:39+00:00","index":"","fulltext":""},{"type":"submitted","content":"Aerosol Science and Engineering","date":"2026-02-02T08:48:16+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"aerosol-science-and-engineering","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"asen","sideBox":"Learn more about [Aerosol Science and Engineering](https://link.springer.com/journal/41810)","snPcode":"41810","submissionUrl":"https://www.editorialmanager.com/asen/default2.aspx","title":"Aerosol Science and Engineering","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"fd59d26e-0130-4002-9c39-613c0c79c593","owner":[],"postedDate":"April 29th, 2026","published":true,"recentEditorialEvents":[{"type":"reviewerAgreed","content":"","date":"2026-05-11T05:30:10+00:00","index":0,"fulltext":""}],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2026-04-29T12:00:43+00:00","versionOfRecord":[],"versionCreatedAt":"2026-04-29 12:00:43","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-8765729","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-8765729","identity":"rs-8765729","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}