Microreflectance FTIR Techniques Applied to Materials Encountered in Forensic Examination of Documents

    Volume 41, Issue 5 (September 1996)

    ISSN: 0022-1198

    CODEN: JFSOAD

    Page Count: 12


    Andrasko, J
    Associate professor, National Laboratory of Forensic Science, SKL, Linköping,

    (Received 19 October 1995; accepted 31 January 1996)

    Abstract

    Microreflectance Fourier transform infrared spectrometry (FTIR) has been applied to the forensic examination of documents. The materials examined were black printing inks, paper, plastics, photocopy toners, and transfer letters (Letra set). Good discrimination was achieved between different samples of these materials. Euclidean distances were calculated on the bases of first derivatives of measured FTIR reflectance spectra. Some results were compared with those obtained by diffuse reflectance FTIR. Microreflectance FTIR is nondestructive to the materials and may be used as a complement to optical techniques for examination of documents.


    Paper ID: JFS14003J

    DOI: 10.1520/JFS14003J

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    Title Microreflectance FTIR Techniques Applied to Materials Encountered in Forensic Examination of Documents
    Symposium , 0000-00-00
    Committee E30