图书馆碱性纸制藏书的酸化机理

IF 0.7 4区 管理学 Q3 INFORMATION SCIENCE & LIBRARY SCIENCE
Y. Mochizuki, Hiroshi Itsumura, T. Enomae
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引用次数: 4

摘要

论文的酸化机制进行了研究,研究了日本两所大学图书馆1971年至2010年间出版的120对相同的书籍。碱性纸张边缘的pH值在出版后5-10年从7.5下降到6.4,10-15年下降到5.8。薄片边缘的pH值为5.4,中间的pH值为7.0。酸性纸的边缘pH值高于纸张的中心。与存放在地下室的纸张相比,存放在地上一层的碱性纸张的边缘pH值较低,因为它们更多地暴露在带有污染物的室外空气中。元素分析表明有氮氧化物沉积,但不能证明在纸的边缘有硫氧化物沉积。假定位置依赖性酸化与露天空气中所含空气污染物的沉积倾向有关,因此边缘pH值急剧下降。在20世纪80年代,碱性纸张越来越多地用于书籍的生产,人们认为不会再发生书籍酸化;然而,这项研究得出的结论是,即使在碱性纸中,酸化过程也会随着时间的推移而发生。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mechanism of Acidification that Progresses in Library Collections of Books Made of Alkaline Paper
Abstract Acidification mechanisms of paper were examined, studying 120 pairs of identical copies of books published from 1971 to 2010 housed in two Japanese university libraries. The pH at the edges of the alkaline paper lowered from 7.5 to 6.4 after 5–10 years and to 5.8 after 10–15 years after publication. The pH bottomed at 5.4 at the edges and at 7.0 in the centre of the sheet. Acid paper showed higher pH at the edges than in the centre of the sheet. The edge pH of the alkaline paper of books stored on an above-ground floor was lower due to more exposure to incoming open air with pollutants compared to paper stored in the basement. Elemental analysis suggested nitrogen oxide deposition, but could not prove sulphur oxide deposition at the edges of the paper. The position-dependent acidification is presumed to relate to the deposition tendency of air pollutants contained in open air, and accordingly the edge pH dropped dramatically. In the 1980s, alkaline paper was increasingly used in the production of books, and it was assumed that no more book acidification was to occur; however, this study concludes that even in alkaline paper, acidification processes will take place over time.
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来源期刊
CiteScore
1.00
自引率
0.00%
发文量
15
期刊介绍: Restaurator is the only international periodical specializing exclusively in the conservation of library and archive materials. Articles examine the many important aspects of this subject area, such as technology, practical experience and organization. They also focus on scientific basics: Many articles deal with the development of new preservation techniques and the improvement and better understanding of established methods. The articles are written in English with summaries in English, French and German. By reading Restaurator regularly, librarians, archivists and restorers can keep up to date with the latest research and developments. The editorial committee is made up of experts from well-known institutions and organizations from all over the world
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