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What is the chief inconvenience of the technique?

  • A.One lamp per element
  • B.The flame must be relit between every sample measured
  • C.The sample must be digested to complete dryness first
  • D.The monochromator has to be recalibrated for each element

Answer: A

Needing a separate source for each element makes multi-element work slow and lamp storage expensive, which is the main reason inductively coupled plasma emission displaced it for surveys. The flame runs continuously, samples need only be in solution, and the monochromator is simply reset. A limitation that follows from the technique's founding idea - a source matched to the analyte - cannot be engineered away without abandoning that idea. The shared properties explain why these belong to one family, and the differences explain why more than one exists.

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