CHEM 3111 | Separations

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Last updated 1:43 AM on 4/21/26
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8 Terms

1
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packed column

a hollow tube that is filled with small particles that are coated with stationary phase material.

2
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volumetric flow rate

velocity of the solvent as it moves through the separation column; (m/s)*pir²

3
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retention time

the elapsed time between the sample injection and detection

4
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eluent

fluid that enters column

5
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stationary phase

maintained within the column. In open tubular columns, it is bound to the inner walls, whereas in packed columns, it is bound to the solid particles that are packed into the column.

6
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mobile phase

gas or liquid solvent that carries the sample through the column

7
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Open tubular columns

hollow capillary tubes with a narrow bore. The stationary phase material is coated to the inner wall of the tube.

8
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eluate

fluid that exits the column