Karl Ernst Claus
Karl Claus | |
---|---|
Kazan State University |
Karl Ernst Claus, also known as Karl Klaus or Carl Claus (
Early life and education
Karl Claus was born in 1796 in Dorpat, Livonia Governorate, Russian Empire, as the son of a painter. At the age of four, he lost his father and two years later became an orphan. In 1810, he moved to Saint Petersburg and started working as an assistant in a pharmacy. Although he had not received formal education, at age 21, Claus managed to pass the State exam in the pharmacy at the Military Medical Academy of St. Petersburg, becoming the youngest pharmacist in Russia at that time.[4] Later in 1826, he established his own pharmacy in Kazan.[7][1]
In 1821, Claus married Ernestine Bate whom he knew since his youth. They had three daughters born in Kazan and later a son, when they moved back to Tartu.[4]
Botany
In 1827, Claus became involved, as an assistant of
In 1834, while still studying at the University of Tartu, Claus went into another botanic trip to the trans-Volga steppes – this time with chemistry professor Gebel. The results of this expeditions were published in 1837–1838.[7][8]
Chemistry
In 1828, when he already turned 32, Claus decided to continue his education at the
Ruthenium
In 1840, Claus, received a substantial amount of platinum ore samples for his studies from the
Claus managed not only to isolate ruthenium, but also determine its atomic weight and chemical properties. He noted the similarity of the chemical properties of ruthenium, rhodium, palladium and platinum and meticulously documented his results. For this discovery, he was awarded the
Health and late years
Claus was known for his negligent attitude towards his health. In particular, he often tasted his chemicals and new compounds and tested the strength of the acids by dipping a finger in them and touching his tongue with it. Once he severely burned his mouth while tasting one of the new ruthenium compounds that he had synthesized. When he isolated osmium tetroxide – a rather toxic chemical – he described its taste as astringent and pepper-like. In April 1845, he was poisoned by osmium tetroxide vapors and had to stop working for two weeks.[14] In 1852, Klaus moved from Kazan back to the University of Tartu and assumed position of professor in pharmacy. He died in Tartu in 1864.[4][7]
See also
References
- ^ a b Berthold Peter Anft (1957), "Claus, Karl Ernst", Neue Deutsche Biographie (in German), vol. 3, Berlin: Duncker & Humblot, pp. 269–270; (full text online)
- ^ a b c Matthey, Johnson. "The Discovery of Ruthenium". Johnson Matthey Technology Review. Retrieved 4 August 2020.
- ^ "Origin and meaning of ruthenium". Online Etymology Dictionary. Retrieved 5 August 2020.
- ^ a b c d e Клаус, Карл Карлович[permanent dead link] in Волков В.А. et al "Выдающиеся химики мира: Биографический справочник" Moscow, Высш. шк., 1991 (in Russian)
- ^ Oppenheim, Alphons (1876). "Claus, Karl". Allgemeine Deutsche Biographie. 4: 284.
- ^ .
- ^ a b c d e f Клаус Карл Карлович Brockhaus and Efron Encyclopedic Dictionary (in Russian)
- ^ "Reise in die Steppen des südlichen Russlands" by F. Göbel, C. Claus und A. Bergman (in German)
- ^ International Plant Names Index. Claus.
- .
- ^ a b Pitchkov, V. N. (1996). "The Discovery of Ruthenium". Platinum Metals Review. 40 (4): 181–188. Archived from the original on 9 June 2011. Retrieved 1 June 2009.
- ^ "Claus, Karl (1845). "О способе добывания чистой платины из руд"". Горный журнал (Mining Journal) (in Russian): 7 (3): 157–163.
- ISBN 0-19-850340-7.
- ^ Красицкий В. А. (2009). "Chemistry and chemists: price of the discoveries" (PDF). Chemistry and Chemists (in Russian). 5: 22–55.