Gas Chromatography PPT Download Free

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Gas Chromatography PPT Free Download. Get paper presentation about Advantages of Gas Chromatography on Gas Chromatography PPT.

What is “Chromatography”

“color writing”
the separation of mixtures into their constituents by preferential adsorption by a solid” (Random House
College Dictionary, 1988)
Chromatography is a physical method of separation in which the components to be separated are distributed between two phases, one of the phases constituting a stationary bed of large surface area, the other being a fluid that percolates through or along the stationary bed.” (Ettre & Zlatkis, 1967, “The Practice of Gas Chromatography)

Applications

  • Compound must exist as a gas at a temperature that can be produced by the GC and withstood by the column (up to 450°C)
  • Alcohols in blood
  • Aromatics (benzene, toluene, ethylbenzene, xylene)
  • Flavors and Fragrances
  • Permanent gases (H2, N2, O2, Ar, CO2, CO, CH4)
  • Hydrocarbons
  • Pesticides, Herbicides, PCBs, and Dioxins
  • Solvents

Advantages of Gas Chromatography

  • Requires only very small samples with little preparation
  • Good at separating complex mixtures into components
  • Results are rapidly obtained (1 to 100 minutes)
  • Very high precision
  • Only instrument with the sensitivity to detect volatile organic mixtures of low concentrations
  • Equipment is not very complex (sophisticated oven)

Gas Chromatography PPT Contents:

  • What is chromatography
  • History of chromatography
  • Applications
  • Theory of operation
  • Detectors
  • Syringe technique
  • and more

Download Gas Chromatography PPT

Filename : Gas Chromatography PPT
Added :23 August, 2012 (12:56)
Category : Science
Posted by :tukimin

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