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  2. Exhaled nitric oxide - Wikipedia

    en.wikipedia.org/wiki/Exhaled_nitric_oxide

    Chemical formula of nitric oxide (NO) together with its molecular size (115 pm).. In medicine, exhaled nitric oxide (eNO - now commonly known as FeNO) can be measured in a breath test for asthma and other respiratory conditions characterized by airway inflammation.

  3. Immediately dangerous to life or health - Wikipedia

    en.wikipedia.org/wiki/Immediately_dangerous_to...

    Examples include high altitudes and unventilated, confined spaces. The OSHA definition is arguably broad enough to include oxygen-deficient circumstances in the absence of "airborne contaminants", as well as many other chemical, thermal, or pneumatic hazards to life or health (e.g., pure helium, super-cooled or super-heated air, hyperbaric or ...

  4. Nitrogen dioxide poisoning - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_dioxide_poisoning

    Nitrogen dioxide poisoning is the illness resulting from the toxic effect of nitrogen dioxide (NO 2). It usually occurs after the inhalation of the gas beyond the threshold limit value. [1] Nitrogen dioxide is reddish-brown with a very harsh smell at high concentrations, at lower concentrations it is colorless but may still have a harsh odour.

  5. Air quality guideline - Wikipedia

    en.wikipedia.org/wiki/Air_quality_guideline

    For sulfur dioxide (SO 2), the guidelines stipulate concentrations not exceeding 40 μg/m 3 24-hour mean. [2] For carbon monoxide concentrations not exceeding 4 mg/m 3 24-hour mean. [2] Up to 30 % of Europeans living in cities are exposed to air pollutant levels exceeding EU air quality standards.

  6. The Link Between Air Pollution And Increased Type 2 Diabetes Risk

    www.aol.com/between-air-pollution-increased-type...

    In the 2024 “State of the Air” report by the American Lung Association, despite decades of progress cleaning up air pollution, 39% of people living in America (131.2 million people) still live ...

  7. National Ambient Air Quality Standards - Wikipedia

    en.wikipedia.org/wiki/National_Ambient_Air...

    Nitrogen dioxide (NO 2) Primary and Secondary 0.053 ppm (100 μg/m 3) annual Annual mean 40 CFR 50.11: Primary 0.100 ppm (188 μg/m 3) 1-hour 98th percentile of 1-hour daily maximum, averaged over 3 years 40 CFR 50.11: Lead (Pb) Primary and Secondary 0.15 μg/m 3: Rolling 3 months Not to be exceeded 40 CFR 50.12

  8. Air quality index - Wikipedia

    en.wikipedia.org/wiki/Air_quality_index

    The AQI level is based on the level of six atmospheric pollutants, namely sulfur dioxide (SO 2), nitrogen dioxide (NO 2), suspended particulates smaller than 10 μm in aerodynamic diameter (PM 10), [19] suspended particulates smaller than 2.5 μm in aerodynamic diameter (PM 2.5), [19] carbon monoxide (CO), and ozone (O 3) measured at the ...

  9. HCG Levels Chart: Are They Necessary While Pregnant? - AOL

    www.aol.com/news/hcg-levels-chart-necessary...

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