27. Which of the following statements related to atomic spectroscopy is INCORRECT?
(A) Atomic spectroscopy relies on electronic transitions of free atoms or atomic ions in the gas phase.
(B) X-ray fluorescence provides better detection limits than inductively coupled plasma mass spectrometry (ICP-MS) for trace elements.
(C) At higher plasma temperatures, a larger fraction of atoms occupies higher-energy excited states according to the Boltzmann distribution.
(D) Collision/reaction cell technology is used in ICP-MS to reduce spectral interferences.
(E) Graphite furnace atomic absorption spectroscopy provides higher sensitivity than flame AAS due to the longer residence time of atoms in the optical path.