颐和园建筑彩画胶料种类的氨基酸分析研究

The Analysis of Binding Media by Amino Acid Analysis for the Drawing of the Summer Palace

为鉴定颐和园建筑彩画使用的胶料,文章使用氨基酸分析法测定了古代常用胶料——鸡蛋、动物胶及奶类3种物质的氨基酸组成比。通过研究3类胶料分析结果,发现了各自胶料的氨基酸组成特点,在此基础上分析4件颐和园建筑彩画样品胶料的氨基酸组成,通过对文物样品和参考样本的氨基酸组成比的主成分分析,发现颐和园建筑彩画样品使用的胶料为动物胶与蛋类的混合物,且其残留量平均值为2.1%。

In order to identify the binding media from the drawing of the Summer Palace,the amino acid analysis was used to distinguish the egg,animal glue and casein which are commonly used as binding media in ancient times.From the results of the analysis,the composition characters of these binding media were discovered.According to the principle component analysis(PCA)of the samples'amino acid ratios which come from the Summer Palace,the category of binding media of samples were determined.It was concluded that the mixture of animal glue and egg was used as binding media in the drawing of the Summer Palace.And the average residue amount of binding media is about 2.1%.