What is an advantage of split injection versus splitless injection in gas chroma

Question

What is an advantage of split injection versus splitless injection in gas chromatography? (A) Split injection is more sensitive. (B) Split injection provides better resolution. (C) Split injection provides faster separations. (D) Split injection allows two detectors to be used. Polar solutes were separated by HPLC using a bonded phase containing polar diol functional groups [-CH(OH)CH_2OH]. How would the retention times be affected if the mobile phase were changed front 40% (v/v) to 60% (v/v) acetonitrile in water? (A) retention times would increase (B) retention times would decrease (C) retention times would not change (D) cannot predict without structures of solutes The chromatogram was obtained with the temperature ramp shown. Which other temperature program would most likely completely resolve these three components in the shortest amount of time? A: b.p. 178 B: b.p. 182 C: b.p. 285 (A) ramp temperature from 50 to 100 degree C in 20 minutes (B) ramp temperature from 50 to 200 degree C in 20 minutes (C) hold at 200 degree C for 10 minutes, then ramp to 300 degree C over next 10 minutes (D) ramp temperature from 100 to I50 degree C in 10 minutes, then ramp to 300 degree C in 10 minutes

Explanation / Answer

46)Split injection provides better resolution than split injection.

This is the difference between these two.

Therefore option (B) is correct

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