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用于洞察20世纪初历史摄影胶片的化学图谱分析。

Chemical Mapping for Insight into Early 1900s Historical Photographic Films.

作者信息

Auditore Alessandro, Tuccitto Nunzio, Spampinato Valentina, Castellino Paola Benedetta, Torrisi Alberto, Licciardello Antonino

机构信息

Department of Chemical Sciences, Università degli Studi di Catania, viale A Doria n 6, Catania 95125, Italy.

CSGI - Center for Colloid and Surface Science, viale A Doria n 6, Catania 95125, Italy.

出版信息

ACS Appl Mater Interfaces. 2025 Apr 9;17(14):21898-21906. doi: 10.1021/acsami.5c02952. Epub 2025 Mar 25.

DOI:10.1021/acsami.5c02952
PMID:40132097
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11986902/
Abstract

This study examines the degradation mechanisms of early 1900s gelatin-based photographic films, integrating advanced analytical techniques to provide a comprehensive understanding of the structural and chemical changes within these materials. Ultraviolet hyperspectral fluorescence-induced visible fluorescence mapping (HUVFM) revealed fluorescence quenching in degraded regions, indicative of protein and collagen degradation in the gelatin matrix. Principal component analysis (PCA) revealed distinct spectral responses in these areas, supporting the hypothesis of gelatin degradation. Time-of-flight secondary ion mass spectrometry (ToF-SIMS) clarified the molecular and elemental composition, confirming the removal of the protective paraffin lacquer in the degraded areas and exposing the underlying gelatin. Depth profiling further demonstrated the spatial distribution of degradation products. In addition, the study examined opaque areas related to silver mirroring, proposing the oxidation-migration-reaggregation model as a plausible explanation for this phenomenon. The results highlight the interaction between chemical processes and structural deterioration in gelatin-based photographic films, offering essential insights into conservation strategies.

摘要

本研究考察了20世纪初基于明胶的摄影胶片的降解机制，整合先进分析技术以全面了解这些材料内部的结构和化学变化。紫外高光谱荧光诱导可见荧光映射（HUVFM）揭示了降解区域的荧光猝灭，这表明明胶基质中的蛋白质和胶原蛋白发生了降解。主成分分析（PCA）揭示了这些区域不同的光谱响应，支持了明胶降解的假设。飞行时间二次离子质谱（ToF-SIMS）明确了分子和元素组成，证实了降解区域中保护性石蜡漆的去除，并暴露了下层的明胶。深度剖析进一步展示了降解产物的空间分布。此外，该研究考察了与银镜现象相关的不透明区域，提出氧化-迁移-再聚集模型作为对这一现象的一种合理的解释。研究结果突出了基于明胶的摄影胶片中化学过程与结构劣化之间的相互作用，为保护策略提供了重要见解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/42406e94a88a/am5c02952_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/2cd7d00cdd42/am5c02952_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/47ad33c443b8/am5c02952_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/49ee9ff99db7/am5c02952_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/443e8f103fc7/am5c02952_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/aaf2ce455d38/am5c02952_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/42406e94a88a/am5c02952_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/2cd7d00cdd42/am5c02952_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/47ad33c443b8/am5c02952_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/49ee9ff99db7/am5c02952_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/443e8f103fc7/am5c02952_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/aaf2ce455d38/am5c02952_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/52bf/11986902/42406e94a88a/am5c02952_0006.jpg

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R Soc Open Sci. 2023 Jun 7;10(6):230059. doi: 10.1098/rsos.230059. eCollection 2023 Jun.
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Time-of-flight secondary ion mass spectrometry imaging in cultural heritage: A focus on old paintings.
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Non-destructive analysis in the study of historical photographs by pXRF and ATR-FTIR spectroscopies.运用 pXRF 和 ATR-FTIR 光谱学对历史照片进行非破坏性分析。
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Gelatin as a Photosensitive Material.明胶作为感光材料。
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