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  2. List of highly toxic gases - Wikipedia

    en.wikipedia.org/wiki/List_of_highly_toxic_gases

    Highly Toxic: a gas that has a LC 50 in air of 200 ppm or less. [2] NFPA 704: Materials that, under emergency conditions, can cause serious or permanent injury are given a Health Hazard rating of 3. Their acute inhalation toxicity corresponds to those vapors or gases having LC 50 values greater than 1,000 ppm but less than or equal to 3,000 ppm ...

  3. Workplace hazard controls for COVID-19 - Wikipedia

    en.wikipedia.org/wiki/Workplace_hazard_controls...

    According to OSHA, medium exposure risk jobs include those that require frequent or close contact within six feet (1.8 m) of people who are not known or suspected COVID-19 patients, but may be infected with SARS-CoV-2 due to ongoing community transmission around the business location, or because the individual has recent international travel to ...

  4. Workplace exposure monitoring - Wikipedia

    en.wikipedia.org/wiki/Workplace_exposure_monitoring

    A wide array of methods and instrumentation are used in workplace exposure monitoring. Direct-read instruments give immediate data, and include colorimetric indicators such as gas detector tubes, and electronic devices such as gas monitors and aerosol particle counters. In addition, samples may be collected and sent to a laboratory for slower ...

  5. Rocky road back to pre-COVID-19 demand levels for gasoline ...

    www.aol.com/news/vitol-ceo-gasoline-diesel...

    Global gasoline and diesel demand is expected to return to pre-pandemic levels by the end of next year, although a resurgence in COVID-19 cases would keep consumption fluctuating, several senior ...

  6. Lead was first added to gasoline in 1927 to keep car engines healthy; its use was gradually taken off the market starting in the 1970s due to both health and environmental concerns, and phased out ...

  7. Occupational hazards in dentistry - Wikipedia

    en.wikipedia.org/wiki/Occupational_hazards_in...

    Dentists have one of the highest occupational risks of exposure to COVID-19. [31] SARS-CoV-2, which causes COVID-19, remains stable in aerosols for several hours. [32] The virus is viable for hours in aerosols and for a few days on surfaces, hence the transmission of SARS-CoV-2 is feasible through aerosols and also shows fomite transmission. [33]

  8. Got COVID? Here are the new 2024 isolation guidelines

    www.aol.com/finance/got-covid-2024-isolation...

    For more on COVID-19: Public health experts are warning of a ‘quad-demic’ this winter. Here’s where flu, COVID, RSV, and norovirus are spreading. New COVID vaccines are here. What to know ...

  9. Occupational toxicology - Wikipedia

    en.wikipedia.org/wiki/Occupational_toxicology

    As of 1983, around 60,000 chemical compounds were considered to be of occupational consequence. [1] Certain sectors have an increased potential for exposure to chemical and biological agents, including manufacturing, construction, mining, logging, and agriculture, as well as service sector workplaces such as in automobile repair, gasoline stations, pipelines, truck and rail transportation ...

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