GAS CHROMATOGRAPHY QUIZ

reduce polarity of the analytes

increase the detector response

increase volatility of the analytes

All of these

Electrical conductivity

Flame ionisation

Infrared spectroscopy

NMR

Decreased resolution

Constant resolution

Increased resolution

Non-linear detector response

elution of the analyte is extended over time

traces of the stationary phase are eluted

the column breaks during installation and causes personal injury

the column is cracked and stationary phase leaks out

it is inert

it has a lower viscosity

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

all of above

determine the thickness of the stationary phase

None of these

measure the distribution of the analyte between mobile and stationary phases

estimate the efficiency of a column

All of these

Field ionisation detector

Electron capture detector

Thermal conductivity detector

Polysiloxanes

None are used as stationary phases

Cyclodextrins

Silica

Optimum column temperature

The selectivity factor

Optimum column length

Optimum mobile phase flow rate

one column is removed and replaced by another

the flow to the column is switched on and off repeatedly

compounds trapped on one column are eluted to another column

any of the above