GAS CHROMATOGRAPHY QUIZ

NMR

Infrared spectroscopy

Flame ionisation

Electrical conductivity

retain contaminants and prevent them from reaching the column

retain the sample and release it gradually to the column

prevent backflush of the injected solution

All of these

prevent analyte condensation within the column

control elution of the different analytes

reduce band broadening to get sharper peaks

all of these

it has a lower viscosity

it doubles up as a party gas for balloons and funny voices

it is inert

all of above

Increased resolution

Increased sample capacity

All of these

Reduced risk of column overloading

The relative separation achieved between two species

None of these

The proportional difference in widths of two chromatographic peaks

The maximum number of different species which a column can separate simultaneously

Thermal conductivity detector

All of these

Electron capture detector

Field ionisation detector

traces of the stationary phase are eluted

elution of the analyte is extended over time

the column breaks during installation and causes personal injury

the column is cracked and stationary phase leaks out

Constant resolution

Increased resolution

Non-linear detector response

Decreased resolution

all of these

retention time

retention factor

retention index