WebApr 12, 2024 · Ground-level ozone is formed when sunlight and hot weather combine with vehicle exhaust, factory emissions, and gasoline vapors. Ozone in the upper atmosphere … WebAug 29, 2024 · The Chinese national ozone air quality standard is a daily maximum 8-hour average greater than 160 micrograms per cubic meter, equivalent to about 80 ppb. …
The Role of Ozone in the Atmosphere and Environment - Treehugger
WebJan 18, 2024 · High concentrations of ozone near ground level can be harmful to people, animals, crops, and other materials. Ozone can irritate your respiratory system, causing you to start coughing, feel an irritation in your throat and/or experience an uncomfortable sensation in your chest. WebFeb 12, 2024 · The ozone layer is created when ultraviolet rays react with oxygen molecules (O 2) to create ozone (O 3) and atomic oxygen (O). This process is called the Chapman cycle. Step 1: An oxygen molecules is photolyzed by solar radiation, creating two oxygen radicals: hν + O2 → 2O. Step 2: Oxygen radicals then react with molecular oxygen to … pyrrolizidinalkaloide und tropanalkaloide
Ground Level Ozone Formation - University of Illinois Urbana …
WebOzone (O 3) is present throughout the atmosphere although there are concentration peaks at two levels, the stratosphere (15 - 50 km) and troposphere (0-15 km), with the largest fraction and concentrations being in the stratospheric O 3 layer ( Royal Society, 2008). Web1 day ago · Ozone levels could be high enough to cause problems for people with heart disease and breathing issues such as asthma. Most ozone at ground level is formed by sunlight hitting car emissions. Ozone is a gas composed of three atoms of oxygen (O3). Ozone occurs both in the Earth's upper atmosphere and at ground level. Ozone can be good or bad, depending on where it is found. Called stratospheric ozone, good ozone occurs naturally in the upper atmosphere, where it forms a protective layer that shields … See more Tropospheric, or ground level ozone, is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC). This happens when pollutants emitted by … See more Ozone is most likely to reach unhealthy levels on hot sunny days in urban environments, but can still reach high levels during colder … See more Breathing ozone can trigger a variety of health problems including chest pain, coughing, throat irritation, and airway inflammation. It also can reduce lung function and harm … See more Ozone in the air we breathe can harm our health. People most at risk from breathing air containing ozone include people with asthma, children, older adults, and people who are active … See more pyrrolizidinalkaloide ph eur