论文部分内容阅读
据近几年来的资料表明,我国的档案、图书纸张变质问題十分严重,在各地档案馆馆藏中破损档案的数量约占总馆藏量的30％左右。为了延长档案的寿命,防患于未然,必须有计划地开展纸张的脱酸工作。今年6月,我们采用PHS—2型精密酸度计对北京市档案馆馆藏1929—1966年的部分待销档案进行了酸度测试,发现有些档案纸张含酸程度十分严重,初步统计结果是: 含酸最严重的纸张类型为新闻纸(1948年12月的一份档案PH值达4.6);其次是账簿纸、凸版纸、有光纸。PH值为中性的纸张类型有打字纸,并且略呈碱性(1949年10月的一份档案PH值达7.41)。
According to the data from recent years, the problem of file deterioration and book paper deterioration in our country is very serious. The number of damaged files in the collection of archives around China accounts for about 30% of the total collection. In order to extend the life of the file, take preventive measures, we must carry out a planned deacidification of paper work. In June this year, we used PHS-2 type precision acidometer to test the acidity of some files sold in Beijing Archives from 1929 to 1966 and found that some files have very serious acidity. The preliminary statistical results are: The most serious type of paper was newsprint (a file PH value of 4.6 in December 1948) followed by books, letterpress and glossy paper. Paper types with a neutral pH are type papers and are slightly alkaline (a file PH value of 7.41 in October 1949).