GAS CHROMATOGRAPHY QUIZ

Polysiloxanes

Cyclodextrins

Silica

None are used as stationary phases

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

it has a lower viscosity

all of above

it is inert

Electron capture detector

All of these

Field ionisation detector

Thermal conductivity detector

NMR

Electrical conductivity

Infrared spectroscopy

Flame ionisation

control elution of the different analytes

reduce band broadening to get sharper peaks

all of these

prevent analyte condensation within the column

compounds trapped on one column are eluted to another column

one column is removed and replaced by another

the flow to the column is switched on and off repeatedly

any of the above

all of the sample in the injector has been added to the column

the sample is spread evenly along the column

the sample is homogenously spread along the column

the sample is concentrated at the start of the column

traces of the stationary phase are eluted

elution of the analyte is extended over time

the column is cracked and stationary phase leaks out

the column breaks during installation and causes personal injury

splitting the sample into smaller portions to inject sequentially

splitting off some of the sample so that it does not enter the column

splitting the sample into smaller portions to inject at the same time through parallel ports

None of these

Gas chromatography is used to analyse gases

Gas chromatography is used to analyse gases, solutions and solids

Gas chromatography is used to analyse solids

All of these