Part 1) Solvent trapping is used for
a) analysis of trace components.
b) analysis of high-boiling major components.
c) analysis of low-boiling major components.
Part 2) Open tubular columns of less than 0.53 mm indiameter:
a) cannot be used for on-column injection of analyte with astandard injection needle.
b) do not give resolution as good as that of wider columns.
c) are excellent when used with thermal conductivitydetectors.
