A study on identification of paint media using staining tests on cross-sections

在艺术品新老样品的参考上，进行了用于油漆介质截面分析的染色试验技术。中性酰胺黑试剂（AB3）和酸性胭脂红，这是蛋白质的染色剂，已被证明在新的和旧的样品中识别胶水介质。另一方面，在18、19世纪美术品的陈旧油基样品中，发现了用于识别干燥油介质的苏丹黑B和油红O。苏丹黑B经常粘附新老胶基，容易将蛋白质误解为干油。本研究调查了国家美术馆西方艺术作品中许多作品所使用的颜料和媒介。

The staining test technique used in the analysis of paint media on cross-sections has been carried out on reference new samples and old samples from artworks. Neutral Amide black reagent(AB3) and acid Fuchsine, which are stains for proteins, have been shown to identify glue media both in new and old samples. On the other hand, Sudan black B and Oil red O, which are stains for oils, revealed to identify drying oil media in new samples, but not to identify oil media in aged oil ground samples from artworks of 18th and 19th century. As to Sudan black B, it often adhered new and old glue grounds, thus it might cause to misunderstand proteins for drying oils. Pigments and media used in many artworks in the National Museum Western Art have been surveyed in this study.