Commission of the European Communities, Joint Research Centre, Ispra Establishment, 1-21020, Ispra (Varese), Italy.
Environ Monit Assess. 1985 Sep;5(3):271-81. doi: 10.1007/BF00394068.
The use of a second harmonic diode laser system for monitoring gaseous ammonia in tropospheric air is discussed. Using a 96 m White cell operated at 13 torr pressure in flow mode, a minimum detectable concentration lower than 1 ppbv was obtained.The NH3 mixing ratio was determined by simultaneous spectroscopic analysis of an atmospheric CO2 line used as a built-in calibration standard.
讨论了使用二次谐波二极管激光系统监测对流层空气中气态氨的方法。在 13 torr 压力下使用 96 m 长的怀特池（White cell）以流动模式运行，获得了低于 1 ppbv 的最低可检测浓度。通过同时分析大气 CO2 线作为内置校准标准的光谱，确定了 NH3 的混合比。
