試題詳解

89.In fall 2017, clouds of ruthenium-106 (¹⁰⁶Ru) radioactive contamination appeared over Eastern Europe. Scientists measured the airborne radio-ruthenium isotope ratio (¹⁰³Ru/¹⁰⁶Ru) and confirmed its concentration. Which of the following techniques is the most suitable for the detection of the¹⁰³Ru/¹⁰⁶Ru ratio?
(A) Inductively coupled plasma mass spectrometry (ICP-MS)
(B) Matrix-assisted laser desorption/ionization-time of flight mass spectrometry
(C) Electrospray ionization mass spectrometry
(D) Fourier-transform ion cyclotron resonance mass spectrometry
(E) Elemental analyzers