褐斑著生紙質文物之漂洗處理

Removal of Foxed Spots on Paper-based Cultural Relics by Bleaching Process

褐斑現象屬於紙張劣化的一種，此種因微生物所造成的黃、橘色或棕色斑的污染不但降低珍貴書畫、藝品之典藏價值，更嚴重影響紙質文物之保存。一般紙質文物之褐斑、黴污常以清水洗滌或輔以漂洗方式處理。本文討論紙質維護常用漂白劑對紙質特性之影響，以提供實際進行漂洗、維護作業之參考。紙張褐斑現象可藉漂洗處理移除之，以肉眼評估漂洗效果，次氯酸鈉、高錳酸鉀及氫硼化鈉等漂劑，可有效地移除手工紙樣及書頁上之褐斑。 Foxing on paper is one kind of biodegradation. Foxed spots not only apparently decrease the life of rare books, paintings and art crafts, but also affect the preservation of cultural relics. The foxed spots on the surface of papers can be removed by washing treatments with bleaching agents, such as sodium hypochlorite, potassium permanganate or sodium borohydride, which can remove the foxed stain from paper-based materials effectively. The results demonstrated that the foxed spots can be washed out by these chemicals.

Foxing on paper is one kind of biodegradation. Foxed spots not only apparently decrease the life of rare books, paintings and art crafts, but also affect the preservation of cultural relics. The foxed spots on the surface of papers can be removed by washing treatments with bleaching agents, such as sodium hypochlorite, potassium permanganate or sodium borohydride, which can remove the foxed stain from paper-based materials effectively. The results demonstrated that the foxed spots can be washed out by these chemicals.