CH3OCF2CHFCL與CHF2OCF2CHFCl對於臭氧的消耗以及全球暖化的潛在影響

林冠宇

摘要
在1970年代初期科學家發現人類大量的使用氟氯碳化物（CFCs）作為冷凍劑、溶劑及汽油添加劑。CFCs在對流層之生命週期從數十年到數萬年不等，並且會垂直擴散進入同溫層。同溫層內足夠的UV光能會使得氟氯碳化物光解產生Cl原子，進而破壞臭氧層(Seinfeld and Pandis, 1998)。有鑑於此，氧化碳氫化合物，特別是鹵化脂類已被廣泛的應用於冷凍劑、清潔劑及醫學用途上。研究人員在實驗室測試氯原子與鹵化脂類的反應速率常數，並探討CH3OCF2CHFCL與CHF2OCF2CHFCl兩種物質對於自然界是否為有害物質，確認其是否適合作為CFCs之替代物質。

Reference:
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