GAS CHROMATOGRAPHY QUIZ

All of these

Oxygen

Nitrogen

Helium

the sample is concentrated at the start of the column

the sample is spread evenly along the column

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

the sample is homogenously spread along the column

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

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

splitting the sample into smaller portions to inject sequentially

None of these

chromatograph

chromatogram

chromatophore

graph

the column breaks during installation and causes personal injury

elution of the analyte is extended over time

traces of the stationary phase are eluted

the column is cracked and stationary phase leaks out

The proportional difference in widths of two chromatographic peaks

The relative separation achieved between two species

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

None of these

increase volatility of the analytes

reduce polarity of the analytes

increase the detector response

All of these

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

all of above

it has a lower viscosity

it is inert

measure the distribution of the analyte between mobile and stationary phases

estimate the efficiency of a column

None of these

determine the thickness of the stationary phase

retention time

retention factor

retention index

all of these