01	Write a description of the principles of Gas Chromatography (GC) as a separation tool (see L6.01).
02	Identify uses of GC as an analytical tool.
03	Identify the components of a gas chromatograph.
04	Relate retention time and resolution to the characterization of mixtures.
05	Identify detectors, including thermal conductivity, flame ionization, and electron capture in terms of their use, detection limits, and special characteristics; list advantages and disadvantages of each.
06	Relate the effects of column length to separation.
07	Install and maintain a variety of chromatographic columns, including capillary, glass, etc.
08	Identify and describe characteristics of a variety of column types in terms of packing material and construction material, with emphasis on packed vs. capillary columns.
09	Use a variety of gas chromatographs to analyze known and unknown mixtures by applying the following procedures: prepare samples dilute samples as appropriate  select column packing choose injection temperature choose column length adjust flow condition columns calibrate instrument optimize conditions identify the components in a mixture calculate the percentage of the components in the mixture repeat the analysis calculate the precision of the measurement
10	Identify and describe a variety of column packings in terms of their polarity on phases and describe when to use each.
11	Characterize a variety of injection ports and the usefulness of each for gases and liquids.
12	Operate a computer-controlled gas chromatograph.
13	Identify major vendors of gas chromatographic instruments.
14	Provide examples of at least six applications of GC in local industries.

Each competency above is linked to an explanatory page.

Return to Skill Development Module L6.13 Gas Chromatography Introduction