NCJ Number
85759
Date Published
1982
Length
12 pages
Annotation
This paper reviews procedures for arson investigators in submitting evidence samples to the crime laboratory and describes laboratory techniques commonly used to analyze accelerants and other types of evidence from fires.
Abstract
Arson investigators are urged to submit samples to the lab along with a cover letter. They are also encouraged to become acquainted with the technician and their equipment and procedures. The gas chromatograph is one of the most efficient and widely used instruments in determining accelerants such as gasoline, kerosene, and No. 2 diesel fuel oil. Although proof of accelerants at the scene of a fire is most important, the laboratory technician can perform other comparisons which may link the suspect to the fire or shed some light on the investigation. Such services include identifying broken glass, matching tool marks and shoe prints, and comparing blood samples, paper matches, soil, hair, fabrics, handwriting, and fingerprints. The laboratory technician must be prepared to present his or her findings effectively in court, projecting a professional image and simply describing the analyses. The paper contains a sample laboratory report, three footnotes, and seven references.