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Unit IX and X
A few important questions
8
Organic Chemistry
Undergraduate 3
06/09/2012

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Cards

Term
what types of organic compounds can be analyzed by gas-liquid chromatography?
Definition
Volatile organic compounds
Term
What limitations are associated with gas-liquid chromatography?
Definition
1) Very small sample sizes
2) Sample must be volatile
Term
What is the stationary phase in gas-liquid chromatography?
Definition
A high boiling, non volatile liquid (typically a polymer)
Term
What is the mobile phase in gas-liquid chromatography?
Definition
An inert gas such as helium or nitrogen
Term
Questions 5-7
Definition
Check pout course packet
Term
What factors affect retention time?
Definition
A)Structure of the compound
B)Type of stationary phase
C)Length and diameter of column
D) Gas flow rate
E) Temperature of the column
Term
what must be available in order for GC analysis to permit compound identifications?
Definition
Authentic samples of the various components of teh mixture being analyzed
Term
What items are typically compared in the process of identifying the components of a mixture?
Definition
A) Retention times
B) Peak enhancement
C) Spectroscopic data
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