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Forensic Sci Int. 1993 Apr;59(1):3-14.

Ultraviolet luminescence from latent fingerprints.

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  • 1Metropolitan Police Forensic Science Laboratory, London, UK.


Illumination of latent fingerprints on white paper using 266-nm radiation from a Nd:YAG laser and photographic detection of their ultraviolet fluorescence, produces images with good ridge detail. The detection rate was 69% in a survey of fingerprints from 34 people compared with only 23% using an argon-ion laser at 514 nm. Prolonged exposure to UV light decreased the inherent UV fluorescence intensity but no adverse effects were observed on subsequent treatment with 1,8-diazafluoren-9-one or ninhydrin.

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