What chemicals were in the Donora smog?
The pollutants in the air mixed with fog to form a thick, yellowish, acrid smog that hung over Donora for five days. The sulfuric acid, nitrogen dioxide, fluorine, and other poisonous gases that usually dispersed into the atmosphere were caught in the inversion and accumulated until rain ended the weather pattern.
What caused the smog in Donora?
The smog was caused by the zinc melting plant, Zinc Works, from their effluent containing substantial amounts of fluoride and a temperature inversion that trapped the effluent over the town.
Who was responsible for the Donora smog of 1948?
THE DONORA SMOG OF 1948 The group of 25 investigators was led by H. H. Schrenk, who was the Chief of the Environmental Investigations Branch of the USPHS at the time, after having served with the United States Bureau of Mines for 20 years in Pittsburgh, Pennsylvania.
How many people died in the Donora smog?
201948 Donora smog / Number of deaths
Killer smog continues to hover over Donora, Pennsylvania, on October 29, 1948. Over a five-day period, the smog killed about 20 people and made thousands more seriously ill. Donora was a town of 14,000 people on the Monongahela River in a valley surrounded by hills.
Which city is the most polluted on earth right now?
World air quality report
| Rank | City | 2019 |
|---|---|---|
| 1 | Bhiwadi, India | 83.4 |
| 2 | Ghaziabad, India | 110.2 |
| 3 | Hotan, China | 110.1 |
| 4 | Delhi, India | 98.6 |
Which city has no pollution?
Zurich, Switzerland once again ranked as the least polluted city in the world.
What was the worst air pollution disaster?
The Donora smog event
The Donora smog event, the worst air pollution disaster in U.S. history, let the public know that industrial pollution could kill. It eventually led to the Clean Air Act and state and federal agencies that regulate pollution, and Pavelko is proud of that legacy.