The IRUG Database - A Collaborative FTIR Library

The Infrared and Raman Users Group (IRUG) Spectral Database© is an ongoing, collaborative compilation of peer-reviewed spectra of artists’ and related materials for the study of the world’s cultural heritage. Currently, the Database contains over 1250 spectra of oils, waxes, natural and synthetic resins, dyes, pigments, proteins, gums, and minerals (Database composition). Scientists and other professionals from the art conservation, historic preservation, and academic communities have generously contributed their spectra to the Database (Individuals, Institutions).

Early draft versions of the Database, containing “as-contributed” JCAMP-DX spectra, were issued in June 1993 and June 1995. To enhance spectral quality and accuracy of sample identification, peer review was implemented in 1999 (Review Committee). A customized IRUG-JCAMP-DX format (JCAMP paper) was also developed to ensure file uniformity and to incorporate both numerical data and descriptive text (sample, instrument, and analysis conditions) into the spectral files. Important details such as sample age, color, source, mw, formula, detector limits, sample preparation, etc. make the IRUG files independent, complete data records. Utilizing these protocols, the latest database version - IRUG Spectral Database, Edition 2000 - was compiled and distributed in printed and digitized formats in 2001.

Edition 2000 was made publicly viewable and keyword searchable via the IRUG website, in 2002. The JCAMP-DX files are currently available to not-for-profit institutions and/or individuals in return for contributions of 10 or more accepted spectra or standards. Contributors license accepted spectra to IRUG for compilation and distribution while retaining the copyright on their own submitted data. IRUG continues to solicit spectra and materials, especially those that are not well represented in the Database (Common Name Index). Spectral files may be submitted via the IRUG web site (Site Services). Contact your regional chairperson to learn how to participate. (Regional Chairs)