A high-quality air purifier should have a HEPA (high-efficiency particulate air) filter.

Source: https://www.lacombeexpress.com/news/worried-about-air-quality-impact-on-asthma-other-conditions-heres-what-you-can-do/

Also, there was no discernible impact on particulate emissions from diesel engines.

Source: https://www.greencarreports.com/news/1141116_do-engine-block-heaters-boost-mpg-reduce-cold-weather-emissions

Although the problem is well known, the exact concentrations of such particulate matter within and outside of the swine barns at different times is poorly understood.

Source: https://1010wcsi.com/hoosier-ag-today/purdue-receives-500k-grant-to-study-air-quality-issues-in-pork-production/?utm_source=rss&utm_medium=rss&utm_campaign=purdue-receives-500k-grant-to-study-air-quality-issues-in-pork-production

An air monitor that tracks and measures an measures five factors: particulate matter (PM 2.5), volatile organic compounds (VOCs), carbon monoxide (CO), humidity and temperature.

Source: https://metro.co.uk/2023/08/24/amazon-home-kitchen-deals-sale-tefal-air-fryers-cordless-vacuums-19377333/

As a result of the smoke from Nova Scotia, the Air Quality Index (AQI) for Kingston, as provided by the Bard website, shows levels of fine particulate matter currently classified as “unhealthy.”

Source: https://hudsonvalleyone.com/2023/06/07/smoke-from-nova-scotia-aerial-fire-and-brimstone-cast-a-plague-on-ulster-county/

But even at home, the freeway sounds and particulate pollution intrudes, he said.

Source: https://www.dailynews.com/2023/10/29/no-cars-on-the-110-freeway-from-pasadena-to-l-a-second-ever-arroyofest-draws-a-crowd/

But then the steady trend reversed, as pollution from particulate matter increased 3% from 2016 to 2022.

Source: https://www.dailynews.com/2023/09/21/wildfire-smoke-is-reversing-years-of-air-pollution-progress/

Food that is burned, seared or braised during cooking can produce tiny particles called particulate matter (PM2.5).

Source: https://www.salon.com/2023/04/24/cooking-pollutes-your-home-and-increases-your-health-risks--but-better-ventilation-will-help_partner/

For petrol cars, the required standard is Euro 4 (for nitrogen oxides, or NOx) and for diesel cars, it’s Euro 6 (for both NOx and particulate matter, or PM).

Source: https://metro.co.uk/2023/08/28/protesters-leave-caravan-with-anti-ulez-slogans-outside-khans-house-19406590/

“For years EPA has been working collaboratively with DEC on better understanding the science behind the PM (particulate matter) problem in the Borough.

Source: https://alaskapublic.org/2023/07/28/alaska-seeks-more-time-to-submit-air-quality-plan-for-particulate-plagued-fairbanks/

In the last several years, there has been an increased understanding that fine particulate matter is in the air we breathe and that it affects more than our lungs.

Source: https://www.pressherald.com/2023/04/11/letter-to-the-editor-fine-particulate-matter-is-making-us-sick/

Less is currently known about how particulate matter moves and disperses at this higher level, where air mixes around buildings and trees.

Source: https://phys.org/news/2023-09-roadside-hedges-ultrafine-particle-pollution.html

Michael Johnson, senior scientist at Berkeley Air Monitoring Group: While Hepa filters are really good at getting rid of particulate matter, that’s about all they will do.

Source: https://www.theguardian.com/us-news/2023/feb/11/gas-stove-pollution-air-purifiers-plants-air-quality

Ms Hyde called for the air to be monitored for particulate matter from traffic over fears it could be impacting residents health, while Mr Cowan, leader of the Labour Group, said a box junction could help to solve some of the problems.

Source: https://www.essexlive.news/whats-on/essex-road-plagued-traffic-jams-8981695

Shredding the scrap metal risks fouling the air with a range of pollutants, including particulate matter or soot, toxic volatile organic compounds and mercury.

Source: https://m.startribune.com/minnesota-is-investigating-air-pollution-at-metal-shredders-around-the-state/600251232/

The Harvard Medical School Primary Care Review has pointed out that within the two zip codes that make up Southwest Detroit alone, “there are more than 150 facilities that emit toxic fumes, gasses, chemicals, and particulate matter.”

Source: https://chicagodefender.com/how-the-clean-energy-win-in-michigan-provides-a-roadmap-for-other-states/?utm_source=rss&utm_medium=rss&utm_campaign=how-the-clean-energy-win-in-michigan-provides-a-roadmap-for-other-states

The last time the matter came under discussion was 2020, when the Trump administration tougher standards on particulate matter, despite public health officials' calls for more stringent protections.

Source: https://www.salon.com/2023/01/13/epas-proposed-air-pollution-standards-for-soot-could-save-thousands-of-lives_partner/

The reporting relates to permitted levels of hazardous compounds (VOCs) and particulate matter, which can harm human health.

Source: https://www.alloaadvertiser.com/news/national/23870731.drax-faces-penalty-canadian-biomass-plant-fails-submit-pollution-report/?ref=rss

The researchers found that only 0.001% of the global population is exposed to World Health Organization-established safe levels of ambient fine particulate matter known as PM2.

Source: https://www.gjsentinel.com/lifestyle/health_and_wellness/theres-almost-nowhere-in-the-world-free-of-air-pollution/article_b92edf1b-112d-5bea-b58a-3f2fe26b4be1.html

The smoke emanating from the wildfires contains extremely fine particulate matter known as PM2.5, which is not only minuscule but also highly dangerous, experts said.

Source: http://dallasposttrib.com/new-york-others-grapple-with-worsening-air-pollution-as-canadian-wildfire-smoke-engulfs-the-region/