The world's oldest 'periodic table' is discovered

At the St. Andrews University in Scotland, England, the oldest " periodic table " in the world was discovered.

World's oldest periodic table chart found in St Andrews | University of St Andrews news
https://news.st-andrews.ac.uk/archive/worlds-oldest-periodic-table-chart-found-in-st-andrews/

A periodic table (element periodic table) in which elements with similar chemical properties are arranged is invented by Russian scientist Dmitri Mendereyev in 1869. The discovery of Mendeleev is used today as an indication of important laws which can be applied not only to chemistry but also to physics and biology.

In 2014 Dr. Alan Aitkin of St. Andrews University found an old periodic table of paper from a warehouse where supplies such as chemicals and labware were stored. I understood at a glance that this periodic table was created at a glance, but researchers at St. Andrews University have started to identify the precise time of creation.

Firstly, the periodic table was quite similar to the second periodic table released by Mendeleev in 1871, but it was not the same. And the periodic table has an annotation in German, it was understood that Dr. Verlag v. Lenoir scientist who studied in Austria from 1875 to 1888, and Forster, Wien Dr., it is time to create it It was done.

Generally, when elements are newly discovered, the periodic table is always updated in order to incorporate it. In this periodic table, although gallium (Ga) discovered in 1875 and scandium (Sc) discovered in 1879 were listed, since germanium (Ge) discovered in 1886 is not included , The time of creation was identified as "1879 to 1886".

As a result of additional investigation by the international experts for advice, St. Andrews University found that this period table is the oldest in the existing periodic table. Professor Eric Sherry of the University of California, USA who studies the history of the periodic table, received recognition as the world's oldest periodic table.

Since the preservation state of the world's oldest periodic table is not good, restoration work is scheduled to be carried out. In the repair work, remove the dirt on the surface, separate it from the backing, neutralize with calcium hydroxide, soak in the magnesium bicarbonate bath and reduce it, then use Japanese paper and glue to crack or lose the part I will repair it. According to St. Andrews University work is planned to be supervised by the National Manuscripts Conservation Trust (NMCT) and expert Richard Hawks, and it seems that the subsidy necessary for restoring work has also been secured.

A memorial event will be held in 2019, which will be a milestone of 150 years from the Mendeleev period table inventor, but the world's oldest periodic table will be made public to those events.