ASTM WK39817

    New Test Method for Forensic Comparison of Glass Using Micro X-Ray Fluorescence (u-XRF) Spectrometry

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    WK39817

    1. Scope

    1.1 This test method is for the determination of major, minor, and trace elements present in glass fragments. The elemental composition of a glass sample can be measured through the use of micro X-ray fluorescence (-XRF) analysis for comparisons of glass. 1.2 This test method describes the application of -XRF using mono- and poly-capillary optics and an energy dispersive X-ray detector (EDS). 1.3 This test method does not replace knowledge, skill, ability, experience, education, or training and should be used in conjunction with professional judgment. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    Keywords

    elemental analysis; forensic science; glass; glass comparisons; micro X-ray fluorescence spectrometry

    Rationale

    This standard is needed by the glass examination community because there are more than 40 forensic laboratories worldwide currently using XRF routinely to analyze and compare glass evidence. The document addresses the need to standardize not only the analytical method but also the comparison criteria used to determine whether or not there is an association between glass samples suspected of having a common origin based on XRF data.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    11-27-2012

    Technical Contact:
    Jose Almirall

    Status:
    Approved