红狐巡视号召我们新开些专题帖,来专门讨论一下某个方面的问题。我只能选择自己擅长的领域。也提出自己的疑惑,欢迎大家参与讨论。
这个帖子里,我将节选一些英国药典和美国药典中的相关内容,共同交流。英语我自己还在热身中,所以采取中文多些。
mhq111111: I think this post is a bad one. I must post a new one.1. 选自英国药典附录ⅧL
Close the vials with a tight rubber membrane stopper coated with polytetrafluoroethylene and secure with an aluminium crimped cap. Shake to obtain a homogeneous solution.
The following static head-space injection conditions may be used:
2 USP中顶空条件节选,水为溶剂。可以看出与英国药典一致。
Headspace Operating Parameters
Headspace Operating Parameter Sets
1 2 3
Equilibration temperature (℃) 80 105 80
Equilibration time (min.) 60 45 45
Transfer-line temperature (℃) 85 110 105
Carrier gas: nitrogen or helium at an appropriate pressure
Pressurization time (s) 30 30 30
Injection volume (mL) 1 1 1