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What is peak capacity?

  • A.The number of plates the column provides
  • B.The largest peak area the detector records
  • C.The number of peaks a separation can resolve
  • D.The maximum sample a column can accept

Answer: C

Peak capacity counts how many peaks could be fitted side by side across the whole chromatogram at the resolution achieved, and it is the figure a second dimension multiplies. Sample capacity, plate number and detector range are distinct quantities. That two dimensions multiply rather than add their capacities is why the technique gains so much, and why the second column need not be as good as the first.

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