Trace gas measurements in ambient air by optical spectroscopic methods
Optical techniques for global and regional monitoring of ambient concentrations of pollutants or atmospheric constituents present the unique advantage of non-intrusive remote sensing capability, high specificity and sensitivity, and almost real-time response. The operational characteristics of two different optical monitors for trace gas measurements, a Brewer spectrophotometer and a tunable diode infrared laser (TDL) monitor, are described. Examples of measurements of O(3) and NO(2) with the Brewer instrument and of NH(3) with the TDL system are presented and discussed.
Bibliographic Reference: Article: Journal of Trace and Microprobe Techniques, Vol. 11 (1993) Nos. 1-3, pp. 93-116
Record Number: 199410024 / Last updated on: 1994-11-28
Original language: en
Available languages: en