Find out how to save Van Gogh's paintings

In an article published in the latest Analytical Chemistry, chemists have proposed new ways to save paintings by Van Gogh, Gauguin, Cesane and some other artists from the nineteenth and twentieth centuries - talents The precious property of mankind is disappearing color.

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The article said that in Van Gogh's work as well as other yellow painters used chrome. This color is more susceptible to change than any other color during storage.

Chemists have previously determined that the cause of this phenomenon is the hexavalent chromium compound in oil paint that has been reduced to valence chromium 3.

Van Gogh's painting 'Hoa plugged in a green vase'.

Currently, after a series of laboratory studies on the metamorphism of paint colors in conditions similar to the conditions that world famous painters have composed and preserved for a long time, chemists learn that chromium components in color paint will be discolored very quickly when simultaneously present sulfate compounds.

This process is further accelerated under the influence of blue and dark purple oil paint. Thus, in order to protect the artistic masterpieces from loss of artistic value, it is necessary to eliminate exposure to radiation rays, effectively initiating chemical reactions to occur.

In September 2012, scientists published the results of the study of brown spots that appear on pictures of Dutch illustrator Vincent Van Gogh, especially the brown color that appears on the picture 'Flower in the flower green vase ' on yellow patches. In this picture, he does not use chrome gold but uses cadmium gold.

It has been discovered that brown spots or stains are due to the interaction between the coating on cadmium and oxalate background cloth in color paint. Knowing the cause of the original color damage to chemists, chemists will find more effective ways to preserve the unique work of mankind. Of course, this is a work that must be very careful so as not to affect the quality of those works.