Science. 1975 Feb 14;187(4176):535-6. doi: 10.1126/science.187.4176.535.
Freons are a potential source of stratospheric chlorine and may indirectly cause serious reductions in the concentration of ozone. The reduction could be as large as 3 percent by 1980, or 16 percent by 2000, if Freon consumption were to grow at 10 percent per year. Even if Freon use were terminated as early as 1990, it could leave a significant effect which might endure for several hundred years.
氟利昂是平流层中氯的潜在来源，可能会间接导致臭氧浓度的严重减少。如果氟利昂的消耗以每年 10%的速度增长，到 1980 年，减少量可能会达到 3%，到 2000 年，减少量可能会达到 16%。即使氟利昂的使用在 1990 年就停止，它也可能留下持续数百年的显著影响。
