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Gas chromatography (GC) is a common ... Prior developed what could be considered the first gas chromatograph that ... sample/carrier gas mixture in the injection ...
John Knox was an early leader in the field of gas chromatography. As a PhD student in at Pembroke College, Cambridge, [3] in 1953 Knox, together with his fellow student Howard Purnell, constructed a self-designed gas chromatographer in their lab and used this to pioneer early research in the field. In later experiments Knox was the first to use ...
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.
The first on-line coupling of gas chromatography to a mass spectrometer was reported in the late 1950s. [4] [5] An interest in coupling the methods had been suggested as early as December 1954, [6] but conventional recording techniques had too poor temporal resolution.
Analytical thermal desorption, known within the analytical chemistry community simply as "thermal desorption" (TD), is a technique that concentrates volatile organic compounds (VOCs) in gas streams prior to injection into a gas chromatograph (GC). It can be used to lower the detection limits of GC methods, and can improve chromatographic ...
The history of chromatography spans from the mid-19th century to the 21st.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).
The use of a mass spectrometer as the detector in gas chromatography was developed during the 1950s by Roland Gohlke and Fred McLafferty. [ 13 ] [ 14 ] [ 15 ] The development of affordable and miniaturized computers has helped in the simplification of the use of this instrument, as well as allowed great improvements in the amount of time it ...
The method uses headspace gas injected into a gas chromatographic column (GC) to determine the original concentration in a water sample. [ 9 ] A sample of water is collected in the field in a vial without headspace and capped with a Teflon septum or crimp top to minimize the escape of volatile gases.
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