The beauty of the Vectorian era may pose a threat to the health of current readers, collectors and librarians. Ancient books-killers have trouble in their luxurious and bright fabric covers, says WomanEL.
As Udel writes, a group of scientists from Lipscomb University (USA) reported that librarians We went to the chemical department of the university. Vony was asked to re-verify the brightly spoiled book 19 – from the beginning of the 20th century from the Biman library.
Analysis showed the presence of lead and chromium in high concentrations in certain samples. Further investigations revealed that these important metals were stored in lead chromate. This half gives a yellow color to the pigment that Vincent van Gogh used in his paintings of dormouse.
Unsafe masterpieces of the 19th century, which had not yet been verified, were packed in plastic bags. Books that were confirmed to be unsafe barn dealers were also packaged and sold in public.
The investigators found that the level of important metals in some books exceeded the limit standards. In the most polluted region, the concentration of lead was twice the CDC standard, and chromium – perhaps six times higher. Excessive infusion of lead or chromium through inhalation can lead to such health problems as cancer, illness or impaired fertility.
Previously, we learned about 3 original records from this world of books.