The identification of chromophores in ancient glass by the use of UV-VIS-NIR spectroscopy

Research output: Chapter in Book/Report/Conference proceedingConference paper

23 Citations (Scopus)

Abstract

In this publication optical spectroscopy is considered to be a supplementary technique to study ancient colored glass. It results from a systematic study of the UV-VIS-NIR transmission spectra of intentionally colored glass fragments from various archaeological and historical sites and dated from the Roman period to the 21th century AD. The main goal consists of defining optical sensing parameters for this type of material. The considered colorants are iron, cobalt, manganese, copper and chromium. It is proved that many cases exist where optical spectroscopy can be seen as a straightforward, non-destructive, low-cost and in-situ applicable technique in identifying authentic material or to obtain information about the origin of the material. Possible sensing parameters are defined as the absence/presence of absorption bands characteristic for a specific coloring metal oxide and the spectral position of these bands. These parameters could reveal information about the applied furnace conditions and/or to the composition of the glass matrix. It is shown that the cobalt absorption band situated around 535 nm for soda rich glasses (Roman and industrial times) is shifted towards 526 nm for potash rich glasses (medieval and post-medieval times).
Original languageEnglish
Title of host publicationOptical Sensing and Detection
PublisherSPIE
Pages7702-7726
Number of pages25
ISBN (Print)9780819481993
Publication statusPublished - 2010
EventSPIE 7726 - Optical sensing and detection - Part of Photonics Europe 2010 - The Square Conference Centre, Brussels, Belgium
Duration: 12 Apr 201015 Apr 2010

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume7726
ISSN (Print)0277-786X

Conference

ConferenceSPIE 7726 - Optical sensing and detection - Part of Photonics Europe 2010
CountryBelgium
CityBrussels
Period12/04/1015/04/10

Keywords

  • CHEMICAL-COMPOSITION; ROMAN; IRON

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