Micro-Destructive and Rapid Chemical Identification of the Protein Binders in Colors Layers of Paintings by ATR-FTIR and Principal Component Analysis
XU Kun1,2,3, WANG Ju-lin1,2,3*
1. Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China
2. School of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
3. Key Research Base of State Administration of Cultural Heritage for Evaluation of Science and Technology in Cultural Relics Protection Field, Beijing 100029, China
Abstract：Compared with gas chromatography-mass spectroscopy (GC-MS) and high performance liquid chromatography (HPLC), attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy is an “analysis-without-separation” technique so that the analytical procedures can be simplified and the consumption of the art samples can be minimized in the analysis of color layers in paintings. This study examined the feasibility of the ATR-FTIR spectroscopy for identifying the protein binders in color layers. The fresh and accelerated UV light aged reference samples with single protein binders and the mixtures of pigment-protein binders were prepared, by using milk, animal glue, egg white as protein binders, and chalk, azurite as pigments. Second derivative infrared (SD-IR) spectral pattern recognition models were obtained by using principal component analysis (PCA). The protein binders in artificial art samples can be discriminated by the pattern recognition models, which were established based on the analysis of fresh samples. Therefore, the ATR-FTIR spectroscopy has great potential in micro-destructive and rapid chemical identification of protein binders in the field of cultural heritage.
Key words：ATR-FTIR spectroscopy; Principal component analysis; Accelerated UV aging process; Protein binders; Cultural heritage conservation
基金资助: National Natural Science Foundation of China (51471020)
通讯作者:
王菊琳
E-mail: julinwang@126.com
作者简介: XU Kun, (1995—), graduate student of College of Materials Science and Engineering, Beijing University of Chemical Technology
e-mail: 1171093758@qq.com
引用本文:
许 昆，王菊琳. 基于ATR-FTIR和PAC微损快速鉴别颜料层中的蛋白质粘合剂[J]. 光谱学与光谱分析, 2019, 39(07): 2299-2306.
XU Kun, WANG Ju-lin. Micro-Destructive and Rapid Chemical Identification of the Protein Binders in Colors Layers of Paintings by ATR-FTIR and Principal Component Analysis. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(07): 2299-2306.
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