Mikhail Semyonovich Tsvet (Михаил Семенович Цвет, also spelt Tsvett, Tswett, Tswet, Zwet, and Cvet) (1872-1919) was a Russian botanist who invented adsorption chromatography. His name is literally translated from Russian as "color".

Biography

Mikhail Tsvet was born May 19, 1872 in Asti, Italy. His mother was Italian, and his father was an Russian official. His mother died soon after his birth and he grew up in Geneva, Switzerland. He received his B.S. degree from the Department of Physics and Mathematics at the University of Geneva in 1893. However, he decided to dedicate himself to botany and received his Ph.D. degree in 1896 for his work on cell physiology. He moved to St. Petersburg, Russia, in 1896 because his father was recalled from the foreign service. There he started to work at the Biological Laboratory of the Russian Academy of Sciences. His Geneva degrees were not recognized in Russia, and he had to earn Russian degrees. In 1897 he became a teacher of botany courses for women. In 1902 he became a laboratory assistent at the Institute of Plant Physiology of the Warsaw University in Poland. In 1903 he became an assistant professor and taught also at other Warsaw universities. After the beginning of World War I the Warsaw University of Technology was evacuated to Moscow, Russia, and in 1916 again to Gorki near Moscow. In 1917 he became a Professor of Botany and the director of the botanical gardens at the University of Tartu (Yuryev) in Estonia. In 1918 Austrian and German troups occupied the city and the university was evacuated to Voronezh, a large city in the south of Central Russia. Tsvett died of a chronic inflammation of the throat on June 26, 1919 at the age of 47.

Chromatography

Mikhail Tsvet invented the chromatography in 1901 during his research on plant pigments. He used liquid-adsorption column chromatography with calcium carbonate as adsorbent and petrol ether / ethanol mixtures as eluent to separate chlorophylls and carotenoids. The method was described on December 30, 1901 at the XI Congress of Naturalists and Doctors (XI съезд естествоиспытателей и врачей) in St. Petersburg. The first printed description was in 1903, in the Proceedings of the Warsaw Society of Naturalists, section of biology. He first used the term "chromatography" in print in 1906 in his two papers about chlorophyll in the German botanical journal, Berichte der Deutschen botanischen Gesellschaft. In 1907 he demonstrated his chromatogaph for the German Botanical Society.

Because of the tragic events in Russia at the beginning of the 20th century, Tsvet's chromatography method went into an oblivion and was recollected 10 years after his death thanks to German scientist Edgar Lederer and Austrian biochemist Richard Kuhn.

References

• Симон Шноль (Simon Schnoll), Герои и злодеи советской науки (Heroes and Villains of Soviet Science), Moscow, Kron-press (Крон-пресс), 1997.
• E. M. Senchenkova, Tsvet (or Tswett), Mikhail Semenovich (1872 - 1919). In: Ch. C. Gillispie (Ed.), Dictionary of scientific biography. American Council of Learned Societies, Charles Scribner Sons, New York, 13: 486-488 (1976)

External links

• Biography of Mikhail S. Tsvet (pdf, in German)
• Mikhail S. Tsvet: Physical chemical studies on chlorophyll adsorptions Berichte der Deutschen botanischen Gesellschaft 24, 316-323 (1906)