In this article, the three seedtimes of the secrity monitoring in air separation area are described, also the performances of the new-style GC with DID and its applications in the security monitoring area of air seperation are introduced.

• 简述了空分安全监测发展的三个阶段,介绍了新型气相色谱仪的性能及在实验室安全监测方面的应用。