| Popis: |
The article presents the results of studies on the method of sensibilizing dactyloscopic traces directly from the gaseous phase. The detection of dactyloscopic traces on absorbtive surfaces requires specific revealing methods, whose essential aspect is the need to deliver reagent to the place of occurrence of the corresponding component of trace forming substance. In practice, for many years, various types of solutions have been used for this purpose, such as DFO, ninhydrin and 1,2-indanedione. Within the framework of this study, research was carried out on revealing fingerprints on absorptive surfaces with the use of genipin, under reduced pressure conditions and in order to compare against the liquid phase. Based on the results of the tests carried out and results obtained, it should be stated that the genipin vacuum sublimation technique can be successfully used to reveal fingerprints on absorptive surfaces. The traces revealed are visible both under white light and fluorescence illumination. The effectiveness of the dactyloscopic trace sensibilization method in the gaseous phase has been demonstrated with regard to such substances as ninhydrin and genipin. |
