Standard Guide for Using Infrared Spectroscopy in Forensic Paint Examinations

Importancia y uso:

5.1 FTIR spectroscopy can be employed for the classification of paint binder types and pigments as well as for the comparison of spectra from known and questioned coatings. When used for comparison purposes, the goal of the forensic examiner is to determine whether any meaningful differences exist between the known and questioned samples.

5.2 This guide is designed to assist an examiner in the selection of appropriate sample preparation methods and instrumental parameters for the analysis, comparison or identification of paint binders and pigments.

5.3 It is not the intent of this guide to present comprehensive theories and methods of FTIR spectroscopy. It is necessary that the examiner have an understanding of FTIR and general concepts of specimen preparation prior to using this guide. This information is available from manufacturers’ reference materials, training courses, and references such as: Forensic Applications of Infrared Spectroscopy (Suzuki, 1993) (4), Infrared Microspectroscopy of Forensic Paint Evidence (Ryland, 1995) (5), Use of Infrared Spectroscopy for the Characterization of Paint Fragments (Beveridge, 2001) (6), and An Infrared Spectroscopy Atlas for the Coatings Industry (2).

Subcomité:

E30.15

Referida por:

A0934_A0934M-22, A0775_A0775M-22, A0934_A0934M-22, A0775_A0775M-22, A1124_A1124M-24, E1610-18, E1732-24E01, A0934_A0934M-22, A0775_A0775M-22, E2809-22, E3234-20

Volúmen:

14.02

Número ICS:

07.140 (Forensic science), 87.040 (Paints and varnishes)

Palabras clave:

analysis; coatings; forensic examinations; infrared spectroscopy; paint;