Purification processes using dry media, such as activated charcoal (carbon) or molecular sieve, may be subject to rapid exotherms from sudden exposure of the media to large quantities of NF3.
由于介质突然暴露在大量的NF3中，使用干燥介质，如活性炭或分子筛的净化过程可能造成温度迅速上升。
2
The EPA says that it is during the cleaning, purification, and waste disposal phases of dry cleaning that these hazardous toxins can get into our air, water, and soil.
环保局说，这是在清洗，纯化和废物处置阶段，干洗，这些有害毒素可以进入我们的空气，水和土壤中。
3
Provides the theoretical data for the vacuum degassing purification and vacuum dry of liquid medium.