Applications

Micro X-ray Fluorescence (µ-XRF) in Forensic Polymer Examinations (ASTM E3295)

Polymeric materials such as tape backings, tape adhesives, and paint layers could leave trace evidence to be used in forensic science. Micro X-ray fluorescence spectrometry (µ-XRF) is one technique in an analytical scheme that can provide clues regarding potential relationships between the sources of polymeric materials.

ASTM E3295 is a guide describing various techniques and procedures intended for use by forensic laboratory personnel who perform µ-XRF analysis of polymer samples. The guide includes sample handling and preparation, instrument operating conditions, and spectral data collection, evaluation and interpretation.[1]

As shown below, HORIBA’s XGT-9000 can offer suitable performance and specification matching with the descriptions in the guide.

ASTM E3295 description[1]

  • Either mono- or poly- capillary optics (Section 1.3)
  • Energy dispersive X-ray detector: Na (11) or greater (Section 1.3 and 4.1)
  • Energy resolution better (less) than 150 eV at FWHM Mn Kα (Section 7.1.6)
  • Energy calibration by measuring the centroid energy of a low- (< 2 keV) and high- (> 6 keV). (Section 5.1.1.1)
  • Spectral overlays that can be used for comparing data (Section 8.3.2.1)

 

HORIBA’s latest µ-XRF, XGT-9000 Expert

  • Both mono- and/or poly-capillaries can be equipped within one system
  • Energy dispersive X-ray detector covering ultra-light elements such as C, N, O, and F in polymer
  • Excellent energy resolution: 140 eV or better at FWHM Mn Kα
  • Energy calibration using both Al Kα and Cu Kα
  • Spectral matching function in software
Reference

[1] ASTM E3295-23 Standard Guide for Using Micro X-Ray Fluorescence (μ-XRF) in Forensic Polymer Examinations (https://store.astm.org/e3295-23.html Accessed on 2026 April 20th)

Application note XGT48 (2026)

 

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