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Invited Presentation

RAM

RAMAN09: Spatially Offset Raman Spectroscopy (SORS)

Spatially Offset Raman Spectroscopy for Noninvasive Characterization of Preservation Fluids: a new perspective for heritage science

Tuesday, October 7, 2025
3:50 PM - 4:30 PM EDT
Location: Ballroom E

    Presenting Author(s)

  • SM

    Sara Mosca, PhD

    Research Scientist
    Central Laser Facility, STFC, Rutherford Appleton Laboratory
    Oxford, England, United Kingdom

    • Non-Presenting Author(s)

  • WM

    Wren Montgomery

    Science Innovation Platforms, Department of Science, Natural History Museum
    London, England, United Kingdom

  • CM

    Chelsea McKibbin

    Science Innovation Platforms, Department of Science, Natural History Museum
    London, England, United Kingdom

  • RS

    Robert Stokes

    FRSC Director
    Agilent Technologies
    oxford, England, United Kingdom

  • Claudia Conti, PhD

    Senior Researcher
    CNR-ISPC
    Milano, Lombardia, Italy

  • PM

    Pavel Matousek

    Professor
    STFC
    Oxford, England, United Kingdom

In fifteen words or less, explain the significance of this contribution (Novel Aspect).: SORS device combined with PCA to non-invasively analyse preservation fluids directly through original containers

Abstract Text:

Spatially Offset Raman Spectroscopy (SORS) has emerged as non-invasive tool in heritage science. By enabling the study of subsurface layers, SORS overcomes limitations of traditional Raman spectroscopy (constrained to surface analysis). This presentation delves into a new SORS application: the non-invasive characterization of  preservation fluids in historical natural history collections.

The conservation and characterization of preservation fluids are crucial for maintaining specimen integrity in natural history fluids collections. However, their characterization poses significant analytical challenges, as invasive methods risk compromising specimens by requiring containers to be opened.

In this study, a handheld SORS device, combined with Principal Component Analysis (PCA), was employed to non-invasively analyse preservation fluids directly through original glass containers. This approach facilitated the identification of chemical components, as well as differentiation of fluid types and concentrations, without the need for invasive sampling.   

This method provides a practical solution for in situ analysis, eliminating the need for transportation and minimizing risks to specimens. By enhancing the ability to monitor and manage preservation fluids, SORS contributes to the sustainable conservation of fluid-based natural history collections, highlighting its transformative potential in museum practices.