Glossary term: 臭氧
Description: 臭氧是一種無色或淡藍色的氣體，每個分子由三個氧原子組成。它的化學式為 O₃，對人體有毒。它在大氣中的比例很小，在某些區域可能不超過百萬分之一。根據臭氧所在的位置不同，它可以保護或危害地球上的生命。
大部分臭氧位於平流層，它在那裡起到保護地球表面免受太陽紫外線輻射的作用。由於人類將氯氟烴引入大氣層，臭氧層的保護作用已經減弱，從而增加了患皮膚癌、白內障和免疫系統衰弱的風險。1987 年，《蒙特利爾議定書》禁止使用這些氣體作為制冷劑和氣溶膠噴霧推進劑，隨後平流層臭氧層開始恢復。
在地球表面附近和對流層中，臭氧是一種非常有害的汙染物，會對肺組織和植物造成損害。
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
This is an automated transliteration of the simplified Chinese translation of this term
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