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Karl Claus

Karl Ernst Claus (Карл Ка́рлович Кла́ус) (Dorpat (now Tartu), Governorate of Estonia, Russian Empire) 23 January 1796 – 24 March 1864) was a Russian chemist and naturalist of Baltic German origin, professor at Kazan State University,[1] and discoverer of the element ruthenium. Claus named it after Ruthenia, the Latin name of Rus', a region of Eastern Europe populated by Eastern Slavs. This area includes Ukraine (excluding Crimea), Belarus' and parts of Russia, Poland and Slovakia.[2][3]

Klaus was a relatively unknown professor before his discovery of ruthenium. Jöns Jakob Berzelius, one of the most renowned scientists in the field of new elements, credited Klaus with the discovery of a new element after he was able to produce a few samples with extensive documentation.[4]


  1. ^ Oppenheim, Alphons (1876). "Claus, Karl". Allgemeine Deutsche Biographie: (ADB). 4: 284.,adb0040286).  
  2. ^ C. Claus (1845). "Untersuchung des Platinrückstandes nebst vorläufiger Ankündigung eines neuen Metalls". Annalen der Physik und Chemie 141 (6): 200–-221. doi:10.1002/andp.18451410606.  
  3. ^ C. Claus (1845). "Entdeckung eines neuen Metalls". Annalen der Physik und Chemie 140 (1): 192–197. doi:10.1002/andp.18451400121.  
  4. ^ Pitchkov, V. N. (1996). "The Discovery of Ruthenium". Platinum Metals Review 40 (4): 181–188.  


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