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  2. Brown carbon - Wikipedia

    en.wikipedia.org/wiki/Brown_carbon

    In chemistry, brown carbon (C brown /BrC) is brown smoke released by the combustion of organic matter. It coexists with black carbon when released in the atmosphere. [1] Black carbon is primarily released by high-temperature combustion and brown carbon is emitted mainly by biomass combustion. These two are the two most important light absorbing ...

  3. Nitrogen dioxide - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_dioxide

    Nitrogen dioxide is a reddish-brown gas with a pungent, acrid odor above 21.2 °C (70.2 °F; 294.3 K) and becomes a yellowish-brown liquid below 21.2 °C (70.2 °F; 294.3 K). It forms an equilibrium with its dimer , dinitrogen tetroxide ( N 2 O 4 ), and converts almost entirely to N 2 O 4 below −11.2 °C (11.8 °F; 261.9 K).

  4. Nitrogen dioxide poisoning - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_dioxide_poisoning

    The WHO urban air quality database estimated Delhi's mean annual PM 10 levels in 2010 as 286 μg /m 3 and London as 23 μg /m 3. In 2014, the database estimated Delhi's annual mean PM 2.5 particulate matter levels in 2013 as 156 μg /m 3 whereas, London have only 8 μg /m 3 in 2010 but the nitrogen dioxide in London breach the European Union's ...

  5. List of highly toxic gases - Wikipedia

    en.wikipedia.org/wiki/List_of_highly_toxic_gases

    Toxic: a chemical that has a median lethal concentration (LC 50) in air of more than 200 parts per million (ppm) but not more than 2,000 parts per million by volume of gas or vapor, or more than 2 milligrams per liter but not more than 20 milligrams per liter of mist, fume or dust, when administered by continuous inhalation for 1 hour (or less if death occurs within 1 hour) to albino rats ...

  6. Smog - Wikipedia

    en.wikipedia.org/wiki/Smog

    Photochemical smog, as found for example in Los Angeles, is a type of air pollution derived from vehicular emission from internal combustion engines and industrial fumes. These pollutants react in the atmosphere with sunlight to form secondary pollutants that also combine with the primary emissions to form photochemical smog.

  7. Smoke - Wikipedia

    en.wikipedia.org/wiki/Smoke

    The fumes initially produced are invisible but become visible if the toast is burnt. An ionization chamber type smoke detector is technically a product of combustion detector, not a smoke detector. Ionization chamber type smoke detectors detect particles of combustion that are invisible to the naked eye.

  8. The best leave-In conditioners for 2024 to help your hair - AOL

    www.aol.com/lifestyle/best-smelling-leave-in...

    Active ingredients: Tamarind seed extract, panthenol, vitamin E, hydrolyzed proteins | Formula: Spray | Hair types: All types This Ouai Leave In Conditioner is worn, and loved, regularly by one of ...

  9. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    The global mean loss of life expectancy (LLE; similar to YPLL) from air pollution in 2015 was 2.9 years, substantially more than, for example, 0.3 years from all forms of direct violence. [16] Communities with persons that live beyond 85 years have low ambient air pollution, suggesting a link between air pollution levels and longevity. [157]