26. Which of the following statements concerning gas chromatography (GC) are INCORRE CT?
(A) The split injection is selected when the concentration of the target analyte in the sample is at
trace level.
(B) GC combined with a flame-ionization detector is used extensively for the detection of
hydrocarbons.
(C) GC in conjugation with a thermal-conductivity detector is useful for the analysis of a mixture of
gases
(D) A polydimethylsiloxane-based polymer is heavily used as a stationary phase in GC.
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