Towards compliance with the 2021 WHO air quality guidelines: A comparative analysis of PM2.5 trends in australia and china
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In 2021, the World Health Organization (WHO) released new Air Quality Guidelines (AQG) which significantly reduced the recommended annual mean concentration of fine particulate matter (PM2.5) in ambient air from 10 μg/m3 (AQG 2005) to 5 μg/m3 (AQG 2021). Rec... ...
