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Worldwide, PM 10 concentrations of 70 μg/m 3 and PM 2.5 concentrations of 35 μg/m 3 have been shown to increase long-term mortality by 15%. [29] More so, approximately 4.2 million of all premature deaths observed in 2016 occurred due to airborne particulate pollution, 91% of which occurred in countries with low to middle socioeconomic status.
The guidelines stipulate that PM 2.5 should not exceed 5 μg/m 3 annual mean, or 15 μg/m 3 24-hour mean; and that PM 10 should not exceed 15 μg/m 3 annual mean, or 45 μg/m 3 24-hour mean. [2] For ozone (O 3), the guidelines suggest values no higher than 100 μg/m 3 for an 8-hour mean and 60 μg/m 3 peak season mean. [2]
PM 10: Annual mean not to exceed 15 μg/m³; 24-hour mean not to exceed 45 μg/m³. [166] PM 2.5: Annual mean not to exceed 5 μg/m³; 24-hour mean not to exceed 15 μg/m³. [166] Exposure above these levels increases the risk of adverse health effects. [166]
PM 2.5: 25 μg/m 3: 24 hour Mean None WHO [1] Guideline Global PM 2.5: 25 μg/m 3: Annual Mean None WHO [1] Interim target (IT) 2 Global PM 2.5: 15 μg/m 3: Annual Mean None WHO [1] Interim target (IT) 3 Global PM 2.5: 35 μg/m 3: 24 hour Mean None Chinese Ministry of Ecology and Environment [5] Legal China Category 1 Areas PM 2.5: 75 μg/m 3: ...
If you’ve done any reading on HEPA (“high efficiency particulate air”) filters and air purifiers, you may have come across the terms “PM10” or “PM2.5.”PM2.5 stands for particulate ...
For reporting the PM 2.5, PM 10 and ozone air quality indices, this surrogate concentration is called the NowCast. The Nowcast is a particular type of weighted average that provides more weight to the most recent air quality data when air pollution levels are changing. [49] [50]
PM 2.5 exposure, such as from car exhausts, activates dormant mutations in lung cells, causing them to become cancerous. [206] [205] Unprotected exposure to PM 2.5 air pollution can be equivalent to smoking multiple cigarettes per day, [207] [dead link ] potentially increasing the risk of cancer, which is mainly the result of environmental ...
Particulate matter, or fine dust is characterized by their micrometre size PM 10 to PM 2.5. Electromagnetic pollution: the overabundance of electromagnetic radiation in their non-ionizing form, such as radio and television transmissions, Wi-fi etc. Although there is no demonstrable effect on humans there can be interference with radio-astronomy ...