{"id":134315,"date":"2025-07-16T17:51:47","date_gmt":"2025-07-16T12:21:47","guid":{"rendered":"https:\/\/www.pranaair.com\/?p=134315"},"modified":"2025-07-18T10:38:46","modified_gmt":"2025-07-18T05:08:46","slug":"prana-air-partnered-with-iit-roorkees-civil-engineering-dept-to-track-transport-pollution-in-delhi","status":"publish","type":"post","link":"https:\/\/www.pranaair.com\/blog\/prana-air-partnered-with-iit-roorkees-civil-engineering-dept-to-track-transport-pollution-in-delhi\/","title":{"rendered":"Prana Air partnered with IIT Roorkee\u2019s Civil Engineering Dept. to track transport pollution in Delhi."},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #161616;color:#161616\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #161616;color:#161616\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.pranaair.com\/blog\/prana-air-partnered-with-iit-roorkees-civil-engineering-dept-to-track-transport-pollution-in-delhi\/#Introduction_Prana_Airs_Air_Quality_Monitors_in_Different_Modes_of_Transportation_in_Delhi\" >Introduction: Prana Air\u2019s Air Quality Monitors in Different Modes of Transportation in Delhi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.pranaair.com\/blog\/prana-air-partnered-with-iit-roorkees-civil-engineering-dept-to-track-transport-pollution-in-delhi\/#Problem_Statement_Understanding_Mode-Specific_Exposure_to_Fine_Particulate_Pollution\" >Problem Statement: Understanding Mode-Specific Exposure to Fine Particulate Pollution<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.pranaair.com\/blog\/prana-air-partnered-with-iit-roorkees-civil-engineering-dept-to-track-transport-pollution-in-delhi\/#Technology_Deployed_Prana_Airs_Portable_GSM-Enabled_Ambient_PM_with_GPS_and_MS_Housing\" >Technology Deployed: Prana Air\u2019s Portable, GSM-Enabled Ambient PM with GPS and MS Housing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.pranaair.com\/blog\/prana-air-partnered-with-iit-roorkees-civil-engineering-dept-to-track-transport-pollution-in-delhi\/#Calibration_Protocol_Validating_Prana_Air_Devices_Against_DustTrak_Reference_Instruments\" >Calibration Protocol: Validating Prana Air Devices Against DustTrak Reference Instruments<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.pranaair.com\/blog\/prana-air-partnered-with-iit-roorkees-civil-engineering-dept-to-track-transport-pollution-in-delhi\/#Data_Collection_Strategy_Monitoring_Across_405_Commute_Trips_and_Multiple_Time_Windows\" >Data Collection Strategy: Monitoring Across 405 Commute Trips and Multiple Time Windows<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.pranaair.com\/blog\/prana-air-partnered-with-iit-roorkees-civil-engineering-dept-to-track-transport-pollution-in-delhi\/#Spatial_Mapping_of_Pollution_Identifying_PM25_Hotspots_Across_Delhi_Using_GPS_Data\" >Spatial Mapping of Pollution: Identifying PM2.5 Hotspots Across Delhi Using GPS Data<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.pranaair.com\/blog\/prana-air-partnered-with-iit-roorkees-civil-engineering-dept-to-track-transport-pollution-in-delhi\/#Inhalation_Dose_Analysis_Quantifying_PM25_Intake_Per_Mode_and_Minute\" >Inhalation Dose Analysis: Quantifying PM2.5 Intake Per Mode and Minute<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.pranaair.com\/blog\/prana-air-partnered-with-iit-roorkees-civil-engineering-dept-to-track-transport-pollution-in-delhi\/#Which_Mode_Exposes_You_the_Most\" >Which Mode Exposes You the Most?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.pranaair.com\/blog\/prana-air-partnered-with-iit-roorkees-civil-engineering-dept-to-track-transport-pollution-in-delhi\/#Full_Ranking_of_Inhalation_Dose_by_Mode\" >Full Ranking of Inhalation Dose by Mode:<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.pranaair.com\/blog\/prana-air-partnered-with-iit-roorkees-civil-engineering-dept-to-track-transport-pollution-in-delhi\/#Conclusion_Prana_Airs_Technology_Powers_Mobile_Air_Quality_Research_with_Real-World_Impact\" >Conclusion: Prana Air\u2019s Technology Powers Mobile Air Quality Research with Real-World Impact<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"has-medium-font-size\"><strong>Project Details: How Prana Air partnered with IIT Roorkee\u2019s Civil Engineering Dept. to track transport pollution in Delhi?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Project Name:<\/strong> <em>\u201c<a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S136192092400018X\">IIT Roorkee Partners with Prana Air to Map Real-Time PM2.5 Exposure Across Delhi&#8217;s Transportation Network<\/a>\u201d<\/em><\/li>\n\n\n\n<li><strong>Client:<\/strong> Department of Civil Engineering, IIT Roorkee, Dr Amit Agarwal and His Student Vikram Singh <\/li>\n\n\n\n<li><strong>Location:<\/strong> Delhi, India<\/li>\n\n\n\n<li><strong>Application:<\/strong> 25 Ambient PM, Air Quality Monitoring across various public and private transport modes<\/li>\n\n\n\n<li><strong>Device Used:<\/strong> Prana Air Ambient PM Air Quality Monitors (with MS Housing)<\/li>\n\n\n\n<li><strong>Monitored Parameters:<\/strong> PM2.5, PM10, PM1, Temperature, Humidity, GPS<\/li>\n\n\n\n<li><strong>Duration:<\/strong> February 9\u201315, 2023<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-introduction-prana-air-s-air-quality-monitors-in-different-modes-of-transportation-in-delhi\"><span class=\"ez-toc-section\" id=\"Introduction_Prana_Airs_Air_Quality_Monitors_in_Different_Modes_of_Transportation_in_Delhi\"><\/span><strong>Introduction: Prana Air\u2019s Air Quality Monitors in Different Modes of Transportation in Delhi<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Making the air quality monitoring accessible from Urban Air is difficult. To make it possible, the IIT Roorkee\u2019s Engineering department took the initiative and monitored the air quality levels as per the real-time personal exposure through the eight transport modes in Delhi in the microenvironments. So, the purpose of this research paper is to quantify variations in PM2.5 concentrations, regular doses, and spatial exposure levels to raise awareness and support policy interventions and health-risk mitigation.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"1066\" src=\"https:\/\/www.pranaair.com\/wp-content\/uploads\/2025\/07\/iit-roorkee-building-from-outside.webp\" alt=\"IIT Roorkee building from outside entrance\" class=\"wp-image-134677\" srcset=\"https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/iit-roorkee-building-from-outside.webp 1600w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/iit-roorkee-building-from-outside-300x200.webp 300w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/iit-roorkee-building-from-outside-1024x682.webp 1024w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/iit-roorkee-building-from-outside-768x512.webp 768w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/iit-roorkee-building-from-outside-1536x1023.webp 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/figure>\n\n\n\n<p>In response to growing concerns about commuter exposure to fine particulate matter (PM2.5) in big cities, researchers from IIT Roorkee undertook a comprehensive study to evaluate real-time personal exposure levels across <strong>eight transport microenvironments<\/strong> in Delhi. The goal was to quantify variations in PM2.5 concentrations, inhalation doses, and temporal\/spatial exposure levels to support policy interventions and health-risk mitigation.<\/p>\n\n\n\n<p>Hence, to capture real-world air quality data on the move, the team needed <strong>accurate, portable, GPS- and GSM-enabled monitors<\/strong> that could function in diverse conditions, from open roads to crowded metro lines. Prana Air partnered with IIT Roorkee\u2019s Civil Engineering Dept. to track transport pollution in Delhi by providing advanced air quality monitoring.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-problem-statement-understanding-mode-specific-exposure-to-fine-particulate-pollution\"><span class=\"ez-toc-section\" id=\"Problem_Statement_Understanding_Mode-Specific_Exposure_to_Fine_Particulate_Pollution\"><\/span><strong>Problem Statement: Understanding Mode-Specific Exposure to Fine Particulate Pollution<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.aqi.in\/blog\/do-people-really-consider-air-pollution-before-moving-to-delhi-ncr\/\">Delhi, one of the world\u2019s most polluted megacities<\/a>, poses serious health risks to its residents, especially daily commuters exposed to fine particulate matter (PM2.5). Although fixed air quality monitoring stations provide general city-wide data, there is a lack of granular, real-time information on <strong>individual exposure during daily <\/strong>travel.<\/p>\n\n\n\n<p>To address this gap, IIT Roorkee researchers aimed to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Monitor <strong>real-time PM2.5 and PM10 exposure<\/strong> inside different transport environments<\/li>\n\n\n\n<li>Correlate air quality data with <strong>GPS location<\/strong> for spatial analysis<\/li>\n\n\n\n<li>Use a <strong>portable, tamper-proof, rugged solution<\/strong> suitable for both open (e.g., bicycle, auto-rickshaw) and enclosed modes (e.g., AC bus\/car)<\/li>\n\n\n\n<li>Ensure <strong>continuous data recording and transmission<\/strong> via GSM<\/li>\n\n\n\n<li>Provide <strong>high accuracy<\/strong>, validated against industry-grade instruments<\/li>\n<\/ul>\n\n\n\n<p>This required a robust, portable solution that could maintain accuracy and connectivity across various environments.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-technology-deployed-prana-air-s-portable-gsm-enabled-ambient-pm-with-gps-and-ms-housing\"><span class=\"ez-toc-section\" id=\"Technology_Deployed_Prana_Airs_Portable_GSM-Enabled_Ambient_PM_with_GPS_and_MS_Housing\"><\/span><strong>Technology Deployed: Prana Air\u2019s Portable, GSM-Enabled Ambient PM with GPS and MS Housing<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Prana Air supplied <strong><a href=\"\/?page_id=17118\">25 Ambient PM Air Quality Monitors<\/a><\/strong> housed in rugged <strong>metal enclosures<\/strong> (MS Housing) to withstand the demands of mobile urban deployment. Here&#8217;s how Prana Air partnered with IIT Roorkee\u2019s Civil Engineering Dept. to track transport pollution in Delhi.The devices have equipped with:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"1200\" src=\"https:\/\/www.pranaair.com\/wp-content\/uploads\/2025\/07\/iit-roorkee-civil-engineering-department-with-prana-air-monitors.webp\" alt=\"IIT Roorkee Civil Engineering Department's Amit Aggarwal and Vikram Singh with Prana Air's Nikhil Sharma\" class=\"wp-image-134590\" srcset=\"https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/iit-roorkee-civil-engineering-department-with-prana-air-monitors.webp 1600w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/iit-roorkee-civil-engineering-department-with-prana-air-monitors-300x225.webp 300w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/iit-roorkee-civil-engineering-department-with-prana-air-monitors-1024x768.webp 1024w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/iit-roorkee-civil-engineering-department-with-prana-air-monitors-768x576.webp 768w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/iit-roorkee-civil-engineering-department-with-prana-air-monitors-1536x1152.webp 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><figcaption class=\"wp-element-caption\">(L to R): <a href=\"https:\/\/www.linkedin.com\/in\/nikhil-sharma-005468128\/\"><\/a><a href=\"https:\/\/www.linkedin.com\/in\/ACoAAB9kTAUBPd3oHtQsZbG4jT4WMgs7HUPV7Yk\">Nikhil Sharma<\/a> (Product Manager, Prana Air), Dr <a href=\"https:\/\/www.linkedin.com\/in\/amit-agarwal-99a20232\/\"><\/a><a href=\"https:\/\/www.linkedin.com\/in\/ACoAAAbLCwYBMJfkc0aEJNQa3wp0BpL1p34Q0e4\">Amit Agarwal<\/a>  (Assistant Professor, IIT Roorkee) and his student <a href=\"https:\/\/www.linkedin.com\/in\/vikram-singh-332619149\/\"><\/a><a href=\"https:\/\/www.linkedin.com\/in\/ACoAACPdZ5YBkUA9tY7q3eqThURN1ZvabsKKtbA\">Vikram Singh<\/a>, IIT Roorkee.<\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Wi-Fi and GSM (2G\/4G) capabilities<\/strong>, enabling continuous real-time data uploads<\/li>\n\n\n\n<li><strong>NarrowBand IoT (NB-IoT) compatibility<\/strong> for low-power transmission<\/li>\n\n\n\n<li><strong>Onboard GPS modules<\/strong>, ensuring location-tagged measurements<\/li>\n\n\n\n<li><strong>Internal memory card<\/strong> storage for local logging every 10 seconds<\/li>\n\n\n\n<li><strong>API connectivity<\/strong> for uploading readings every 1 minute to a centralized server<\/li>\n<\/ul>\n\n\n\n<p>These capabilities allowed the researchers to simultaneously collect time-stamped PM data along with location, temperature, and humidity across all modes of transport.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-calibration-protocol-validating-prana-air-devices-against-dusttrak-reference-instruments\"><span class=\"ez-toc-section\" id=\"Calibration_Protocol_Validating_Prana_Air_Devices_Against_DustTrak_Reference_Instruments\"><\/span><strong>Calibration Protocol: Validating Prana Air Devices Against DustTrak Reference Instruments<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>To ensure data reliability, Prana Air monitors underwent <strong>7-day co-location calibration<\/strong> against a <strong>DustTrak Model 8530<\/strong> reference device at Prana Air in Delhi. A specially designed calibration bench allowed up to ten sensors to be tested simultaneously.<\/p>\n\n\n\n<p>Key outcomes from calibration included:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Regression coefficient (R\u00b2): 0.994<\/strong>, showing very high accuracy<\/li>\n\n\n\n<li>Outdoor data comparison showed sensor readings were within <strong>\u00b110%<\/strong> of standard reference values<\/li>\n\n\n\n<li>Additional 8-day field validation further confirmed consistency<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-data-collection-strategy-monitoring-across-405-commute-trips-and-multiple-time-windows\"><span class=\"ez-toc-section\" id=\"Data_Collection_Strategy_Monitoring_Across_405_Commute_Trips_and_Multiple_Time_Windows\"><\/span><strong>Data Collection Strategy: Monitoring Across 405 Commute Trips and Multiple Time Windows<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The study took place between <strong>February 9 and 15, 2023<\/strong>, with data collected over three commuting periods daily: morning peak (08:00\u201311:00), afternoon off-peak (12:00\u201315:00), and evening peak (17:00\u201320:00).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"1104\" src=\"https:\/\/www.pranaair.com\/wp-content\/uploads\/2025\/07\/prana-air-monitors-deployed-in-different-transport-modes.webp\" alt=\"Prana Air's Air Quality Monitors deployed in different transportation modes in Delhi\" class=\"wp-image-134611\" srcset=\"https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/prana-air-monitors-deployed-in-different-transport-modes.webp 1600w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/prana-air-monitors-deployed-in-different-transport-modes-300x207.webp 300w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/prana-air-monitors-deployed-in-different-transport-modes-1024x707.webp 1024w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/prana-air-monitors-deployed-in-different-transport-modes-768x530.webp 768w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/prana-air-monitors-deployed-in-different-transport-modes-1536x1060.webp 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/figure>\n\n\n\n<p>Key details:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>405 trips<\/strong> conducted over 7 days by 6 trained participants<\/li>\n\n\n\n<li>All modes covered: AC\/Non-AC buses and cars, metro, MTW, bicycle, and auto-rickshaws<\/li>\n\n\n\n<li>Each trip lasted 40\u201360 minutes<\/li>\n\n\n\n<li>Real-time data was visualized using a mobile application, which also helped users monitor sensor performance<\/li>\n\n\n\n<li>Simultaneous trips using AC and non-AC variants conducted to enable comparative analysis<\/li>\n<\/ul>\n\n\n\n<p>The sensors collected data every 3 seconds (locally) and 1 minute (online), allowing fine-grained analysis of air quality exposure in motion.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-spatial-mapping-of-pollution-identifying-pm2-5-hotspots-across-delhi-using-gps-data\"><span class=\"ez-toc-section\" id=\"Spatial_Mapping_of_Pollution_Identifying_PM25_Hotspots_Across_Delhi_Using_GPS_Data\"><\/span><strong>Spatial Mapping of Pollution: Identifying PM2.5 Hotspots Across Delhi Using GPS Data<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Using location-tagged PM2.5 data, the study created <strong>exposure heatmaps<\/strong> of the full 8.5 km travel route between <strong>Connaught Place and AIIMS<\/strong>. These maps revealed clear <strong>pollution hotspots<\/strong> in specific areas:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Connaught Place<\/strong>, a major commercial district with dense traffic<\/li>\n\n\n\n<li><strong>Central Vista construction zone<\/strong><\/li>\n\n\n\n<li><strong>Dilli Haat market<\/strong>, <strong>AIIMS Cloverleaf<\/strong>, <strong>signalized intersections<\/strong>, <strong>bus stops<\/strong>, and <strong>roundabouts<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Heatmaps showed the highest pollution exposure in <strong>open transport modes<\/strong> (bicycles and MTWs), which are directly exposed to roadside emissions. In contrast, <strong>AC modes showed lower spatial variability<\/strong> due to enclosed environments.<\/p>\n\n\n\n<p>These findings demonstrate how spatial mapping can support data-driven decisions for urban planning and personal exposure avoidance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-inhalation-dose-analysis-quantifying-pm2-5-intake-per-mode-and-minute\"><span class=\"ez-toc-section\" id=\"Inhalation_Dose_Analysis_Quantifying_PM25_Intake_Per_Mode_and_Minute\"><\/span><strong>Inhalation Dose Analysis: Quantifying PM2.5 Intake Per Mode and Minute<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>To better reflect the health implications, the study calculated the <strong>inhalation dose<\/strong>, the actual amount of PM2.5 inhaled, based on both trip duration and minute-by-minute exposure.<\/p>\n\n\n\n<p>In addition to calculating inhalation doses, the study also analyzed <strong>average PM2.5 concentrations<\/strong> across all transport modes. The findings revealed clear differences in the air quality experienced by commuters depending on their mode of travel:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"1066\" src=\"https:\/\/www.pranaair.com\/wp-content\/uploads\/2025\/07\/quantifying-pm2.5-intake-per-mode-and-minute.webp\" alt=\"How much pollution commuters inhaled in each transport of Delhi\" class=\"wp-image-134625\" srcset=\"https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/quantifying-pm2.5-intake-per-mode-and-minute.webp 1600w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/quantifying-pm2.5-intake-per-mode-and-minute-300x200.webp 300w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/quantifying-pm2.5-intake-per-mode-and-minute-1024x682.webp 1024w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/quantifying-pm2.5-intake-per-mode-and-minute-768x512.webp 768w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2025\/07\/quantifying-pm2.5-intake-per-mode-and-minute-1536x1023.webp 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Bicycle:<\/strong> 59.80 \u00b5g\/m\u00b3 (highest)<\/li>\n\n\n\n<li><strong>Metro:<\/strong> 55.75 \u00b5g\/m\u00b3<\/li>\n\n\n\n<li><strong>AC Bus:<\/strong> 40.82 \u00b5g\/m\u00b3 (lowest among public transport)<\/li>\n\n\n\n<li><strong>AC Car:<\/strong> 40.17 \u00b5g\/m\u00b3 (lowest overall)<\/li>\n<\/ul>\n\n\n\n<p>These results show that <strong>open and semi-enclosed modes<\/strong> like bicycles and metros are associated with significantly higher pollution levels. While <strong>air-conditioned, enclosed vehicles<\/strong> offer the cleanest environments.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-which-mode-exposes-you-the-most\"><span class=\"ez-toc-section\" id=\"Which_Mode_Exposes_You_the_Most\"><\/span><strong>Which Mode Exposes You the Most?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Bicycles<\/strong> consistently had the highest pollution intake, both in total and per minute, because cyclists breathe faster and are directly exposed to vehicle emissions.<\/li>\n\n\n\n<li><strong>AC buses<\/strong> had the lowest dose, thanks to filtered air and enclosed cabins.<\/li>\n\n\n\n<li>The <strong>metro<\/strong>, though showing high PM2.5 levels at times, had shorter travel time, so the total intake was lower than expected.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-full-ranking-of-inhalation-dose-by-mode\"><span class=\"ez-toc-section\" id=\"Full_Ranking_of_Inhalation_Dose_by_Mode\"><\/span><strong>Full Ranking of Inhalation Dose by Mode:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p><strong>For a full trip (most to least pollution inhaled):<\/strong><strong><br><\/strong>Bicycle &gt; Non-AC Bus &gt; Non-AC Car &gt; Motorbike &gt; Auto-rickshaw &gt; Metro &gt; AC Car &gt; AC Bus<\/p>\n\n\n\n<p><strong>Per minute of travel (most to least pollution inhaled):<\/strong><strong><br><\/strong>Bicycle &gt; Motorbike &gt; Non-AC Bus &gt; Non-AC Car &gt; Metro &gt; Auto-rickshaw &gt; AC Car &gt; AC Bus<\/p>\n\n\n\n<p>Notable results:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>People commuting by <strong>cycle inhaled 4.68x more PM2.5 per minute<\/strong> than AC bus riders<\/li>\n\n\n\n<li>Metro trips had high concentrations but shorter durations, leading to a lower total inhaled dose<\/li>\n\n\n\n<li><strong>Active modes<\/strong>, despite health benefits, were associated with <strong>higher pollutant intake<\/strong>, especially during peak traffic hours<\/li>\n<\/ul>\n\n\n\n<p>This analysis provided a clearer picture of how <strong>exposure and time interact<\/strong> to affect actual health risks.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion-prana-air-s-technology-powers-mobile-air-quality-research-with-real-world-impact\"><span class=\"ez-toc-section\" id=\"Conclusion_Prana_Airs_Technology_Powers_Mobile_Air_Quality_Research_with_Real-World_Impact\"><\/span><strong>Conclusion: Prana Air\u2019s Technology Powers Mobile Air Quality Research with Real-World Impact<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The collaboration between IIT Roorkee and Prana Air demonstrated that <strong>low-cost, portable air quality sensors<\/strong>, when accurately calibrated and validated, can generate high-impact environmental health data at scale.<\/p>\n\n\n\n<p>By enabling granular, real-time exposure monitoring across diverse transport environments, <strong>Prana Air\u2019s technology empowered researchers<\/strong> to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Map individual-level air pollution exposure<\/li>\n\n\n\n<li>Identify urban pollution hotspots<\/li>\n\n\n\n<li>Analyze health risks using inhalation dose metrics<\/li>\n\n\n\n<li>Recommend actionable public health and infrastructure policies<\/li>\n<\/ul>\n\n\n\n<p>This case study not only highlights the capabilities of Prana Air devices but also sets a new benchmark for <strong>evidence-based urban air quality planning<\/strong> in India and beyond.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Project Details: How Prana Air partnered with IIT Roorkee\u2019s Civil Engineering Dept. to track transport pollution in Delhi? 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