Forensic Science Applications of Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS): V. Direct Analysis of Metallic Paints - Screening of Panels

• NCJ Number: 115494
• Journal: Journal of Forensic Science Volume: 34 Issue: 1 Dated: (January 1989) Pages: 180-196
• Author(s): E M Suzuki; J A Brown
• Date Published: 1989
• Length: 17 pages
• Publication Format: Article
• Publication Type: Report (Study/Research)
• Language: English
• Country: United States of America
• Note: Presented at the 39th Annual Meeting of the American Academy of Forensic Sciences, San Diego, February 16-21, 1987, and the 11th Meeting of the International Association of Forensic Sciences, Vancouver, August 1987.

Annotation

Direct sampling using diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) is particularly useful for rapidly screening metallic reference panels in some hit-and-run cases.

Abstract

For panels with finishes having high densities of metallic flakes, spectra identical to those obtained using conventional transmittance techniques may be obtained with DRIFTS and relatively minor spectral features may be used to distinguish between different topcoats. For panels with finishes having low densities of metallic flakes, information about the minor constituents of the topcoat and the presence of specific pigments in the undercoats is also obtained in certain cases. These data, likewise, may serve to differentiate between different finish systems. (Author abstract)