title: Illicit drug detection with laser 1: investigation of optimal parameters in stomach tissue.
abstract: The main purpose of this study is to establish radiation-safe scanning of passersby at high security areas, such as airports and customs. The stomach was selected as the organ to be analyzed. In order to determine whether a substance found inside a human body as wrapped in a plastic bag is filled narcotics or not, many substances in white powder form including morphine-HCL were inspected. Inspection was carried out with on-ionizing radiation by irradiating stomach tissue with laser light. Optical transmittance of lamb stomach tissue was analyzed at different wavelengths. We showed that detection by 650-nm diode laser irradiation would be suitable for such a radiation-safe scan. Different materials were also investigated for absorptive properties, and closed system Raman studies were performed. The spectrum of a molecule found inside white powder placed behind the lamb stomach tissue was detected as a fingerprint. This allowed the detection of target substances without any physical contact or damage to the biological tissue.
authors.affiliation: Istanbul University, Fen Bilimleri ABD, Faculty of Forensic Sciences, Istanbul, TurkeybIstanbul Technical University, Department of Mathematics, Faculty of Sciences and Letters, Istanbul, Turkey.
authors.forename: Aysen Gürkan
authors.initials: AG
authors.lastname: Özer
authors.affiliation: Fatih University, Biomedical Engineering Institute, Istanbul, Turkey.
authors.forename: Hasim Özgür
authors.initials: HÖ
authors.lastname: Tabakoglu
authors.affiliation: Istanbul University, Fen Bilimleri ABD, Faculty of Forensic Sciences, Istanbul, Turkey.
authors.forename: Salih
authors.initials: S
authors.lastname: Cengiz
mesh_terms: D000818:Animals; D064423:Drug Trafficking; D044707:Forensic Sciences / Q000379:methods*; D053844:Lasers, Solid-State / Q000009:adverse effects*; D009022:Morphine Derivatives / Q000737:chemistry; D012756:Sheep; D013057:Spectrum Analysis; D013270:Stomach / Q000473:pathology / Q000528:radiation effects*; D015813:Substance Abuse Detection / Q000009:adverse effects / Q000379:methods*
chemical_list: D009022:Morphine Derivatives