지문에 포함된 자외선 차단 성분이 종이 표면의 지문 현출에 미치는 효과

초록

Fingerprints containing organic and inorganic UV-blocking ingredients on various paper surfaces(copy paper, kraftpaper, leaflets, newspapers) were developed using ultraviolet imaging and 1,2-IND/Zn, and then the effect of UV-blockingingredients on fingerprint detection was studied. As a result of observation using ultraviolet imaging, fingerprints containingorganic sunblock ingredients appeared relatively clearer than fingerprints containing inorganic sunblock ingredients. In addition,it was found that the more the surface fluoresces, the more the sunblock ingredient blocks the surface fluorescence, makingthe fingerprint be detected more clearly. As a result of enhancing the same fingerprint to 1,2-IND/Zn, fingerprints containingorganic sunblock ingredients were developed slightly brighter than fingerprints containing inorganic sunblock ingredients. Beingaged after deposited, sunblock ingredients spread over the surface and the fingerprint was not detected with ultraviolet imaging,but amino acid component contained in sweat does not spread and the fingerprint was visualized with 1,2-IND/Zn.

키워드