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Chromatography, literally "color writing", [1] was used—and named— in the first decade of the 20th century, primarily for the separation of plant pigments such as chlorophyll (which is green) and carotenoids (which are orange and yellow). New forms of chromatography developed in the 1930s and 1940s made the technique useful for a wide range ...
Mikhail Tsvet. Mikhail Semyonovich Tsvet, also spelt Tsvett, Tswett, Tswet, Zwet, and Cvet (Russian: Михаил Семёнович Цвет; 14 May 1872 – 26 June 1919) was a Russian-Italian botanist who invented chromatography. His last name is Russian for "colour" and is also the root word of " flower."
Chromatography, pronounced / ˌkroʊməˈtɒɡrəfi /, is derived from Greek χρῶμα chrōma, which means "color", and γράφειν gráphein, which means "to write". The combination of these two terms was directly inherited from the invention of the technique first used to separate biological pigments. [6]
Gas chromatography is the process of separating compounds in a mixture by injecting a gaseous or liquid sample into a mobile phase, typically called the carrier gas, and passing the gas through a stationary phase. The mobile phase is usually an inert gas or an unreactive gas such as helium, argon, nitrogen or hydrogen. [1]
L. S. Ettre. Leslie Stephen Ettre (September 16, 1922 – June 1, 2010) was a Hungarian - American analytical chemist and scientist who was known for his contributions to the field of chromatography, in particular open-tubular gas chromatography, as well as to documentation of the history of chromatography. [1]
In 1903, Mikhail Tsvet invented chromatography, an important analytic technique. In 1904, Hantaro Nagaoka proposed an early nuclear model of the atom, where electrons orbit a dense massive nucleus. In 1905, Fritz Haber and Carl Bosch developed the Haber process for making ammonia , a milestone in industrial chemistry with deep consequences in ...
Erika Cremer (20 May 1900, Munich – 21 September 1996, Innsbruck) was a German physical chemist and Professor Emeritus at the University of Innsbruck [1] who is regarded as one of the most important pioneers in gas chromatography, [1] as she second conceived the technique in 1944, [1] after Richard Synge and Archer J.P. Martin in 1941. [2][3][4]
A mass spectrometer in use at NIH in 1975. The history of mass spectrometry has its roots in physical and chemical studies regarding the nature of matter. The study of gas discharges in the mid 19th century led to the discovery of anode and cathode rays, which turned out to be positive ions and electrons. Improved capabilities in the separation ...