论文部分内容阅读
为检验塑料小包装全氟丙烷气体（C3F8）在不同包装和储存方法时浓度变化，将装有5～7mlC3F8的聚氯乙烯小袋，根据不同储藏温度和外包装方法随机分成四组：（1）22℃聚乙烯外包装，（2）36℃聚乙烯外包装，（3）22℃铝箔真空外包装，（4）-29℃聚乙烯外包装；每一组C3F8小袋气体存放一定时间后，应用气相色谱分析方法进行浓度测量。结果：第3组C3F8浓度最高和稳定，第2组浓度随放置时间降低最明显，第4组是临床应用气体的储藏和包装方法，其30天样本浓度和第3组相等，但放置一年时浓度降低。结果显示：塑料小包装C3F8予以铝箔真空外包装是一种可行的方法，利于C3F8运输和普及；聚乙烯外包装的C3F8，应放在-29℃保存，时间不超过一年。
To test the change in concentration of perfluorinated propane gas (C3F8) in different packaging and storage methods, a polyvinyl chloride pouch containing 5-7 ml of C3F8 was randomly divided into four groups according to different storage temperatures and packaging methods: (1) 22 ℃ polyethylene packaging, (2) 36 ℃ polyethylene packaging, (3) 22 ℃ aluminum foil vacuum packaging, (4) -29 ℃ polyethylene packaging; each group C3F8 pouch gas storage for a certain period of time, the application Gas chromatographic analysis method for concentration measurement. Results: The concentration of C3F8 in Group 3 was the highest and the lowest. The concentration of C3F8 in Group 3 was the most obvious and the concentration of C3F8 in Group 3 was the most obvious. The Group 4 was the storage and packing method for clinical application of gas. The concentration of C3F8 in Group 3 was the same as that in Group 3, When the concentration is reduced. The results showed that the plastic packaging C3F8 aluminum foil vacuum packaging is a viable approach to facilitate the transport and popularization of C3F8; polyethylene packaging C3F8, should be stored at -29 ℃ for less than a year.