Volume 41, Issue 3 (May 1996)

    The Use of Activated Charcoal Strips for Fire Debris Extractions by Passive Diffusion. Part 1: The Effects of Time, Temperature, Strip Size, and Sample Concentration

    (Received 30 January 1995; accepted 28 September 1995)

    CODEN: JFSOAD

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    Abstract

    The introduction of commercially produced activated charcoal strips into fire, debris analysis has provided an easy, efficient and cost effective method for accelerant extraction. Several parameters associated with passive diffusion extraction of fire debris using activated charcoal require consideration in order to obtain a truly representative sample of the accelerant. This study investigated the effects of time, temperature, charcoal strip size and sample concentration on the adsorption of common accelerants. Notable displacement of specific volatile components, similar to the break-through noted in dynamic systems, occurred under certain extreme conditions. An analysis protocol was developed to minimize these effects.


    Author Information:

    Lothridge, K
    Forensic Chemist and Forensic Laboratory Director, Pinellas County Forensic Laboratory, Largo, FL

    Newman, RT
    Forensic Chemist and Forensic Laboratory Director, Pinellas County Forensic Laboratory, Largo, FL

    Dietz, WR
    Chief Forensic Section, Bureau of Alcohol, Tobacco and Firearms, San Francisco Laboratory Center, Walnut Creek, CA


    Stock #: JFS13922J

    ISSN: 0022-1198

    DOI: 10.1520/JFS13922J

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    Title The Use of Activated Charcoal Strips for Fire Debris Extractions by Passive Diffusion. Part 1: The Effects of Time, Temperature, Strip Size, and Sample Concentration
    Symposium , 0000-00-00
    Committee E30