B.PHARMACY
SEMESTER 7
INSTRUMENTAL METHODS OF ANALYSIS (IMA)
UNIT IV
Detectors used in Gas Chromatography :
Syllabus :
Gas chromatography - Introduction, theory, instrumentation, derivatization, temperature programming, advantages, disadvantages and applications pdf handwritten notes download free
Gas Chromatography is a technique used to separate the components of a mixture. The gas flows through an adsorption column, which is packed with porous material. As the gas passes through the column, it dissolves in the adsorbent and forms a liquid layer on its surface. This liquid layer can be collected and analysed for different compounds present in it. The most common type of chromatography used in analytical chemistry is Gas Chromatography (GC) where gases are separated by differences in mass and/or volume. The most commonly used gases for GC analysis are helium, nitrogen, carbon dioxide and hydrogen. Gas Chromatograph: A device that separates compounds according to their boiling points or molecular weights by passing them through columns filled with packed tubes containing stationary phase adsorbents such as silica gel, alumina and selenium dioxide.
HANDWRITTEN NOTES: