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The inert-gas line is vented through an oil bubbler, while solvent vapors and gaseous reaction products are prevented from contaminating the vacuum pump by a liquid-nitrogen or dry-ice/acetone cold trap. Special stopcocks or Teflon taps allow vacuum or inert gas to be selected without the need for placing the sample on a separate line. [3]
used to separate particles dispersed in a liquid according to their molecular mass: Electrophoresis apparatus: used to detect and classify serum proteins or proteins from any other source; also used for DNA separation Chromatography: • Gas chromatography or Gas liquid chromatography (GLC) • Planar chromatography • Paper chromatography
Also used for DNA separation. Chemical laboratory apparatus: for Chemical tests: Chromatography: One of the basic modern "chemical examination" of body fluids and viscera;video links for details •Gas Chromatography or Gas Liquid Chromatography(GLC)-do- •Planar Chromatography-do- •Paper Chromatography-do- •Thin layer chromatography-do-
Gas chromatography (GC) is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition. Typical uses of GC include testing the purity of a particular substance, or separating the different components of a mixture. [ 1 ]
The target analytes are extracted by mixing the sample with water and purge with inert gas (e.g. Nitrogen gas) into an airtight chamber, this is known as purging or sparging. The volatile compounds move into the headspace above the water and are drawn along a pressure gradient (caused by the introduction of the purge gas) out of the chamber ...
Pyrolysis–gas chromatography–mass spectrometry is a method of chemical analysis in which the sample is heated to decomposition to produce smaller molecules that are separated by gas chromatography and detected using mass spectrometry. Pyrolysis is the thermal decomposition of materials in an inert atmosphere or a vacuum.