Abstract
This paper presents the results of the studies obtained by the method of thermal desorption spectrometry, aimed at studying the dependence of the speed of the surface ionization detector on the temperature (Te) of the emitter. For this purpose, the detector recorded the evaporation spectra of heroin, papaverine and morphine, obtained at different rates of temperature-programmed heating of substances. To study the dependence of the speed of the detectors on the emitter Te, these spectra were obtained at different emitters Te. It was revealed that with an increase in the emitter Te, the response speed of the detector increases. This increase is associated with an increase in the rates of heterogeneous processes in the adsorption layer of the emitter with increasing Te. A mathematical model was developed for this dependence, based on surface ionization of molecules under non-stationary conditions.
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