Allergic people exposed to ozone for a long time in an environment with ozone content exceeding 180 μ g/m3 will have adverse symptoms such as stinging eyes and cough. Studies have shown that when the ozone content in the air increases by 100 micrograms per cubic meter, people's respiratory function will be weakened by 3%. For athletes, the ozone content in the air can directly affect their endurance and competition results.
When the ozone concentration is 6.25* 10-6mol/L(0.3mg/L), it can irritate eyes, nose and throat. When the concentration is (6.25-62.5) *10-5 mol/L (3-30 mg/L), symptoms such as headache and local paralysis of respiratory organs appear. When the ozone concentration is 3.125 *10-4 ~1.25 *10-3 mol/l (15 ~ 60mg/l), it is harmful to human body.
Its toxicity is also related to contact time. For example, long-term exposure to ozone below1.748 *10-7mol/L (4 ppm) will cause permanent heart disorder, but exposure to ozone below 20ppm will not last more than 2 hours, which will not cause permanent harm to human body. Therefore, the allowable ozone concentration is 4.46 *10-9 mol/l (0.1ppm) for 8 hours. Because the smell of ozone is very strong, people can feel it when the concentration is 4.4.6 *10-9 mol/L (0.1ppm).
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Extended Data Other Hazards of Ozone
Ozone will make the leaves of plants turn yellow or even wither, causing harm to plants, leading to the reduction of agricultural and forestry plants and the decline of economic benefits.
Ozone can quickly react with organic compounds (including rubber, styrene, unsaturated fatty acids and their esters) containing unsaturated carbon-carbon bonds in indoor building materials (such as latex paint), household articles (such as cork appliances and carpets), silk, cotton, cellulose acetate, nylon and polyester, thus causing dye fading, photo image layer fading and tire aging.
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