title: Development of fluorescent markers using polycyclic aromatic hydrocarbons with vaseline.
abstract: Identifiable fluorescent markers were developed as tracers to tail suspects using phenanthrene, anthracene, fluoranthene, pyrene, perylene, and coronene in vaseline. Vaseline was used as a carrier of the marker. Of the six compounds in the vaseline, perylene and fluoranthene were readily observed under ultraviolet (UV) light at a wavelength of 365 nm. All six compounds were identified selectively and sensitively without interference of vaseline using a high performance liquid chromatograph (HPLC) with a fluorescence detector. The detection limit was much less than 1 ng, corresponding to that of the observation behavior under UV light. The results showed that each component with vaseline was more effective than the individual component for the delay in degradation. The case examples of the fluorescent markers are shown.
authors.affiliation: Criminal Investigation Laboratory, Metropolitan Police Department, Tokyo, Japan.
authors.forename: Shoji
authors.initials: S
authors.lastname: Kurata
authors.forename: Haruo
authors.initials: H
authors.lastname: Hirano
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Nagai
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D003418:Criminology / Q000379:methods; D005456:Fluorescent Dyes / Q000032:analysis / Q000737:chemistry*; D005554:Forensic Medicine / Q000379:methods*; D006801:Humans; D010577:Petrolatum; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods; D013800:Theft / Q000331:legislation & jurisprudence; D014466:Ultraviolet Rays
chemical_list: D005456:Fluorescent Dyes; D011084:Polycyclic Aromatic Hydrocarbons; D010577:Petrolatum