GAS CHROMATOGRAPHY QUIZ

(2)0.5

3

2

4

Increased sample capacity

All of these

Reduced risk of column overloading

Increased resolution

the column is cracked and stationary phase leaks out

traces of the stationary phase are eluted

elution of the analyte is extended over time

the column breaks during installation and causes personal injury

All of these

The velocity of the mobile phase

The migration rate of an analyte through a column

The distribution of an analyte between the stationary and the mobile phase

Gas chromatography is used to analyse gases, solutions and solids

Gas chromatography is used to analyse gases

All of these

Gas chromatography is used to analyse solids

cube root of the number of theoretical plates in a column

number of theoretical plates in a column

square of the number of theoretical plates in a column

square root of the number of theoretical plates in a column

Flame ionisation

Electrical conductivity

Infrared spectroscopy

NMR

analyse the column contents ahead of the sample

analyse volatile compounds from solid or liquid samples

determine non-volatiles

determine the psychological state of the tutor

prevent backflush of the injected solution

retain contaminants and prevent them from reaching the column

All of these

retain the sample and release it gradually to the column

Decreased resolution

Non-linear detector response

Constant resolution

Increased resolution