Final Prep Answers
Final Prep Answers
Final Prep Answers
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Signal<br />
Chem 155 <strong>Final</strong> review topics and questions:<br />
30. Label the arrows:<br />
Factors that determine performance in chromatography:<br />
a<br />
b<br />
c<br />
d<br />
0 5 10 15 20 25 30<br />
Ret ention T ime / s<br />
Improve resolution a Retention Time c Band width d<br />
Improve efficiency a Determined by K P –<br />
partition coefficient<br />
Improve selectivity b Achieved by change of<br />
mobile phase<br />
Achieved by change of<br />
stationary phase<br />
c<br />
b<br />
b<br />
Set by MP velocity and<br />
SP quality<br />
Set by longitudinal<br />
diffusion<br />
Set by resistance to<br />
mass transfer<br />
Set by variable flow path<br />
d<br />
d<br />
d<br />
d
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