氟利昂排放到大气中,会破坏地球外层的臭氧层。防止臭氧层破坏已日益引起人们的注意。英美等国已着手采取某些具体措施。英国 BOC 有限公司(BOC Limited)利用杜邦公司研制的一种氟利昂再循环回收装置,提供回收氟利昂的服务工作。BOC 公司向制冷技师提供特殊的气瓶。制冷技师可以将原先准备放入大气的氟利昂制冷剂排入这类气瓶 Freon emissions into the atmosphere can destroy the ozone layer on the Earth’s outer layers. Prevention of ozone layer damage has drawn increasing attention. Britain and the United States and other countries have embarked on some concrete measures. BOC Limited used a Freon recycling facility developed by DuPont to provide service for the recovery of freons. BOC supplies special gas cylinders to refrigeration technicians. Refrigeration technicians can discharge Freon refrigerants originally prepared for the atmosphere into such cylinders