Abstract
In situ
observations are defined as those made at the point where the instrument is located. Since a large variety of techniques have been used for
in situ
measurements, the general features, capabilities and problems of these techniques are reviewed. To illustrate capabilities and problems more specifically, examples of recent measurements are presented which have a bearing on the chlorofluoromethane—ozone problem . These include: (1) resonance fluorescence for the measurement of Cl and CIO, (2) grab and cryogenic collection of whole air samples for the m easurem ent of CFCl
3
and CF
2
Cl
2
(as well as CH
4
, H
2
, CO and N
2
O ) , (3) im pregnated filters for acid chloride, and (4) matrix isolation for HO
2
and NO
2
.
Cited by
7 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献