| In-situ identification of copper-based green pigments on paintings and manuscripts by reflection FTIR. | |
| | |
MedLine Citation:
|
PMID: 23341003 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
In this work non-invasive reflection infrared spectroscopy was used to discriminate between different Cu-based green pigments (namely, malachite, verdigris, chrysocolla, emerald green and phthalo green). The pigments, chosen because of their historical widespread use in artworks, were investigated as pure powders and in situ on painted models by reflection FTIR spectroscopy. The distortion arising as a result of the specular and diffuse component of reflected radiation was evaluated as function of the optical and surface properties of the investigated mock-ups. Use of the Kramers-Kronig (KK) algorithm to correct for the distortion arising from the surface reflection gave k index maxima shifted by more than 20 cm(-1) relative to those obtained in conventional transmission mode. These findings stress the need to carefully manage use of the KK algorithm on reflection spectra to avoid erroneous assignment. On the other hand, combination and overtone bands (which are enhanced by the diffuse reflection) were proved to enable reliable and sensitive identification of most of the pigments studied. Knowledge acquired by study of pure compounds and painted models was subsequently applied to interpret the spectra acquired from paintings and manuscripts. |
| | |
Authors:
|
D Buti; F Rosi; B G Brunetti; C Miliani |
Related Documents
:
|
20531873 - High-transmission 20-channel polychromator for observing non-maxwellian electron veloci... 23496443 - Rheology and shear band suppression in particle and chain mixtures. 21341873 - Characteristic noise features in light transmission across membrane protein undergoing ... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2013-1-23 |
Journal Detail:
|
Title: Analytical and bioanalytical chemistry Volume: - ISSN: 1618-2650 ISO Abbreviation: Anal Bioanal Chem Publication Date: 2013 Jan |
Date Detail:
|
Created Date: 2013-1-23 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101134327 Medline TA: Anal Bioanal Chem Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
Centro di Eccellenza SMAArt (Scientific Methodologies applied to Archaeology and Art), c/o Dipartimento di Chimica, Università degli Studi di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Conducting polymer-based hybrid assemblies for electrochemical sensing: a materials science perspect...
Next Document: Electrochemical genosensor for detection of human mammaglobin in polymerase chain reaction amplifica...