The analysis of dyes in ball point inks on single paper fibres using laser desorption ionisation time of flight mass spectrometry (LDI-TOFMS)

Broderick Matthews, George Walker, Hilton Kobus, Paul Pigou, Carolyne Bird, Glyn Smith

    Research output: Contribution to journalArticle

    20 Citations (Scopus)

    Abstract

    An important requisite for the forensic analysis of inks on documents is that damage to the document is avoided or minimised. This paper describes a technique for dye identification in ballpoint pen inks using LDI-TOFMS on single ink bearing paper fibres and its application to a case. A single ink bearing paper fibre can be prised from the surface of the document under a stereo microscope and presented to the instrument for analysis without further treatment. This sampling process causes imperceptible damage to the surface of the document. Clear mass spectrometric identification of the ink dyes is obtained. A case example is provided to illustrate the practical application of the technique.

    Original languageEnglish
    Pages (from-to)e26-e30
    Number of pages5
    JournalForensic Science International
    Volume209
    Issue number1-3
    DOIs
    Publication statusPublished - 2011

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