How to preserve books in humid weather
1. Books should be properly kept in a clean and good environment, and should not be mixed with other items such as food to prevent attracting insects.
2. Books stored for a long time should be taken out and dried regularly, but not in the current weather.
3. In humid weather such as yellow mold season, pay attention to moisture-proof and keep dry.
4. Take care of books when reading them. Do not read while eating to prevent oil stains.
5. Place necessary anti-moth and anti-mildew medicines. At present, there are two main types of medicines: anti-mold repellents and anti-mold insecticides, which are very effective.
For Jiangnan, especially the middle and lower reaches of the Yangtze River. During the rainy season, it is very important to prevent books from mildew and insects, very important, very important. Because the temperature and humidity in the air at this time are very suitable for the reproduction and growth of various types of molds and pests.
According to relevant data, a temperature of 25-37°C and a humidity of more than 70% are the most suitable growth environment for various types of molds and pests. Common molds in household books are mainly aspergillosis, such as Aspergillus flavus, Aspergillus niger, Aspergillus versicolor, Aspergillus nidulans, etc. The main harm caused by mold to books is that when the mold decomposes in the book and absorbs the cellulose nutrients in the paper, it can decompose organic acids to corrode the paper, making the paper yellow and brittle. For colored mold, it can also contaminate the book paper. .
The common pests in household books mainly include: tobacco beetles, medicinal beetles, booklice, sweater fish, etc. The harm caused by book pests to books is mainly to bore the books into circular holes of varying sizes; eat from the outer edges of the books and outwards, making the books irregular; and stain and cover the books.
The main methods to prevent mildew and insects in household books are:
1. Keep books clean, dry, ventilated and clean: When reading, keep your hands as clean as possible to avoid Prevent dust and oil from your hands from falling into the book, especially food fragments. At the same time, pay attention to the cleanliness of the bookcases. Drying: Keep bookcases away from moisture as much as possible. If you live on the first floor, you can raise the bookcase appropriately. When the air humidity is high, you can put desiccant in the bookcase. Ventilation: Place the bookcase in a ventilated place to ensure fresh air inside the bookcase.
2. Put in anti-mold and anti-insect agents. Anti-mold and anti-insect agents are currently available on the market and are also available in the Nanjing Municipal Archives.
3. After the rainy season, perform necessary treatment on the books in the cabinet. For example, when the weather is good and the dust in the air is low, you can move the books out and place them in a cool, ventilated place away from direct sunlight for natural ventilation and dehumidification; for books that have mold spots or mildew, you can use a wrung-out wet hand towel After gently wiping off the mildew, place it in a cool, ventilated place to dry in the shade. Do not expose it to the sun.
4. For rare, rare and orphan books, acid-free special equipment should be used and properly protected.