Method for determining light damage on cultural relics based on Raman spectroscopy analysis

Abstract

The invention belongs to the interdisciplinary field of cultural relic protection, lighting technology and analytical chemistry, relates to a scientific, precise and operable technology for evaluatingthe illumination damage of a light source to cultural relics, and provides a method for detecting and evaluating light source products produced by different enterprises. The method for determining the light damage on cultural relics based on Raman spectroscopy analysis comprises: 1) preparation of a model specimen, wherein based on a cultural relic made of a single material, a model specimen is prepared from the single material for forming the cultural relic, and based on a cultural relic made of a composite material, model specimens are respectively prepared from the main materials for forming the cultural relic; 2) selection of experimental light sources, wherein a standard comparing light source is selected, and a to-be-detected experimental light source is selected; 3) irradiation experiment; 4), parameter detection, wherein the quantitative influence of the illumination on the microscopic molecular structure of the material is obtained by analyzing the change of the Raman spectroscopy characteristic peaks before and after the irradiation of the specimen; and 5), data analysis. The method of the present invention is mainly used for cultural relic protection and lighting occasions.

Description

Technical field [0001] The present invention belongs to the cross-disciplinary field of cultural relics protection, lighting technology, and analytical chemistry, and particularly relates to the lighting of exhibits in museums and other places. Raman spectroscopy is used as an analysis method to quantitatively evaluate the effects of different light sources on various types of exhibits through experimental methods. Optical radiation damage. Specifically, it involves a method for judging cultural relics' light damage based on Raman spectroscopy. Background technique [0002] 1. Background [0003] Light, temperature, humidity, and air quality are the influencing factors of cultural relic damage. However, in the museum environment, the temperature, humidity, and air quality can be adjusted to the most suitable state for the preservation of cultural relics by air conditioning, fresh air, filtration and other related technical means, and any light will affect the exhibits. At the ...

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Problems solved by technology

However, the current standards do not provide detailed and clear indicators and suggestions for the selection of light sources for different types of cultural relics, and cannot achieve effective and accurate light protection.

[0025] (2) The current standard was implemented in 2009, and there is no new revision yet

The spectral composition and luminous principle of LED are very different from traditional light sources, resulting in unclear damage to cultural relics, which makes it impossible to evaluate the actual applicability of LED in cultural relic lighting by current standards, making the promotion of LED lack of scientific basis

[0026] (3) The standard does not provide an evaluation method for how to measure the radiation damage caused by the light source to the exhibits

[0027] To sum up, due to the lack of research results on the spectral evaluation of Chinese cultural relics protective lighting based on Raman spectroscopy, current research mainly uses Raman spectroscopy for non-destructive testing, restoration and identification of cultural relics or based on the impact of color difference on lighting. Qualitative description of the mechanism of artifacts

At the same time, due to the lack of effective support of relevant research results, the current "Museum Lighting Design Code" (GB / T 23863-2009) cannot provide suggestions for the selection of light sources for different types of cultural relics, and cannot provide precise guidance for the protective lighting of Chinese cultural relics

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