Toxic Air Pollutants - American Lung Association
2023年10月25日 · Toxic, or hazardous, air pollutants are substances that cause or are suspected of causing cancer, birth defects, or other serious harms. They can be gases, such as hydrogen chloride, benzene and toluene or compounds and metals …
List of highly toxic gases - Wikipedia
Among the best known toxic gases are carbon monoxide, chlorine, nitrogen dioxide and phosgene. 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.
What are Hazardous Air Pollutants? | US EPA - U.S. Environmental ...
2024年11月21日 · Hazardous air pollutants, also known as toxic air pollutants or air toxics, are those pollutants that are known or suspected to cause cancer or other serious health effects, such as reproductive effects or birth defects, or adverse environmental effects.
Hazardous Air Pollutants | US EPA - U.S. Environmental …
2024年11月12日 · Hazardous air pollutants are those known to cause cancer and other serious health impacts. The Clean Air Act requires the EPA to regulate hazardous air pollutants, also known as air toxics, from categories of industrial facilities in two phases.
Risk Assessment for Toxic Air Pollutants: A Citizen's Guide - US …
Toxic air pollutants are poisonous substances in the air that come from natural sources (for example, radon gas coming up from the ground) or from manmade sources (for example, chemical compounds given off by factory smokestacks) and can harm the environment or …
Hazardous Air Pollutants: Sources and Exposure | US EPA
2024年10月21日 · People are exposed to toxic air pollutants in many ways that can pose health risks, such as by: Breathing contaminated air. Eating contaminated food products, such as fish from contaminated waters; meat, milk, or eggs from animals that fed on contaminated plants; and fruits and vegetables grown in contaminated soil on which air toxics have been ...
5 dangerous pollutants you’re breathing in every day - UNEP
2021年11月2日 · Air pollution is an invisible killer with a stranglehold on many parts of our fragile planet. Nine out of 10 of us breathe air containing levels of pollutants that exceed World Health Organization limits.
Air Pollutants | Air Quality | CDC - Centers for Disease Control …
2024年2月16日 · Outdoor air quality has improved since the 1990s, but many challenges remain in protecting Americans from air quality problems. The EPA regulates six pollutants as “criteria” air pollutants. It regulates them using human health-based and environmentally based criteria.
Evaluating Exposures to Toxic Air Pollutants: A Citizen's Guide
Toxic air pollutants are substances in the air that, if you are exposed to them, could increase your chances of experiencing health problems. Toxic air pollutants also can cause ecological impacts. An example of a toxic air pollutant is the chemical benzene, which is in gasoline.
Poison in the Air — ProPublica
2021年11月2日 · From the urban sprawl of Houston to the riverways of Virginia, air pollution from industrial plants is elevating the cancer risk of an estimated quarter of a million Americans to a level the...