Tag: Submicron
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GO AQS White Paper v1.1.0.0 – Update
We are pleased to announce an update to our indoor air quality standards. This revision ensures our benchmarks remain scientifically rigorous while acknowledging the changing environmental realities of 2026. Changelog: You will find the latest version of the white paper on the home page at www.goaqs.org. If members have any comments about the changes please feel free…
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Summary of the PM Working Group Discussion on Submicron and Ultrafine Particles
Two sessions within the Particulate Matter (PM) Working Group have highlighted a critical shift in air quality monitoring: the move away from traditional mass-based measurements toward tracking the number and surface area of the smallest particles. While PM2.5 is currently well-regulated, the scientific community is increasingly concerned about submicron and ultrafine particles (UFP), which pose…
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A Synthesis of Expert Views on Submicron and Ultrafine Particles
For decades, the global standard for measuring indoor air quality (IAQ) has focused on PM2.5, particulate matter with an aerodynamic diameter of 2.5 micrometers or less. However, recent findings from the Particulate Matter Working Group suggest that this mass-based metric may be overlooking the most significant health risks. By synthesizing expert survey data and recent…
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