Analysis of Clingfilms by Infrared Spectroscopy and Thermal Desorption Capillary Gas Chromatography

• NCJ Number: 133234
• Journal: Journal of the Forensic Science Society Volume: 31 Issue: 3 Dated: (July-September 1991) Pages: 337-347
• Author(s): J Gilburt; M J Ingram; M P Scott; M Underhill
• Date Published: 1991
• Length: 11 pages
• Publication Format: Article
• Publication Type: Research (Applied/Empirical)
• Language: English
• Country: United Kingdom

Annotation

An automated thermal desorption gas chromatography technique has been adapted to analyze traces of volatile compounds in proprietary food-wrapping films.

Abstract

Fourteen brands of polyvinylchloride film, seven brands of polyethylene film, and one polyvinylidene chloride film were discriminated. Prior infrared analysis was used to identify the polymer type. The chromatograms showed minor changes in volatiles along the length of a roll of film and major changes in films exposed to daylight or in contact with cannabis resin. 2 tables and 8 notes (Author abstract)