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Identification of iron‐gall inks with near‐infrared Raman microspectroscopy
Author(s) -
Lee Alana S.,
OtienoAlego Vincent,
Creagh Dudley C.
Publication year - 2008
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1989
Subject(s) - raman spectroscopy , gall , inkwell , infrared , raman microspectroscopy , fluorescence , analytical chemistry (journal) , chemistry , materials science , optics , chromatography , physics , biology , botany , composite material
Abstract The identification of iron‐gall inks on a number of 18th, 19th, and 20th century documents and a 12th century manuscript has been conducted using near‐infrared Raman microspectroscopy. These historic iron‐gall inks were found to display characteristic Raman bands generally occurring around 1475 cm −1 , between 1310 and 1350 cm −1 (variable), 490–640 cm −1 (combined broad band), and 400 cm −1 . These bands have promise as analytical spectroscopic markers for in situ non‐destructive Raman identification of iron‐gall ink on historic collections and were in good agreement with Raman data collected for laboratory‐prepared iron‐gall ink complexes and inks prepared following traditional iron‐gall ink recipes. All historic ink spectra contained a fluorescent background, the degree of which varied between samples. Copyright © 2008 John Wiley & Sons, Ltd.