Chapter 28: Q.28.6 (page 778)
What is meant by the linear-response range of a detector?
The meaning of the linear response range of the detector is that the response range is proportional to the linear power of concentration.
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In preparing a hexane-acetone gradient for an alumina HPLC column, is it desirable to increase or decrease the proportion of hexane as the column is eluted?
Describe the differences between single-column and suppressor-column ion chromatography.
What is the order of elution of the following compounds from a normal-phase packed HPLC column? (a) ethyl acetate, acetic acid, dimethylamine (b) propylene, hexane, benzene, dichlorobenzene
How can the selectivity factor be manipulated in (a) GC and (b) LC?
In a normal-phase partition column, a solute was found to have a retention time of min, and an unretained sample had a retention time of min when the mobile phase was by volume chloroform and n-hexane. Calculate (a) k for the solute and (b) a solvent composition that would bring k down to a value of about.
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