1. The fluid exiting a chromatographic column is called the (a) eluent. (b) elua
ID: 1072577 • Letter: 1
Question
1. The fluid exiting a chromatographic column is called the (a) eluent. (b) eluate (c) analyte. 2. Which is the most common carrier gas for gas chromatography? (a) helium (b) nitrogen (c) hydrogen 3. In a gas chromatography experiment using a non-polar stationary phase (a) solutes are eluted in order of increasing boiling point. (b) solutes are eluted in order of increasing vapor pressure. (c) solutes are eluted in order of increasing polarity. 4. You can improve the separation of components in gas chromatography by (a) raising the temperature of the injection port. (b) raising the temperature of the column isothermally. (c) raising the temperature of the column programmatically. 5. Solvent trapping is used for (a) analysis of trace components. (b) analysis of high-boiling major components. (c) analysis of low-boiling major components.Explanation / Answer
1. (b)
The eluate is the mobile phase leaving the column.
The eluent is the solvent that carries the analyte.
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