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← ScienceWithin mass spectrometry, which mechanism enables isotope ratio determination?
A)Magnetic field induced ion deflection✓
B)Photoionization cross-section variations
C)Electron multiplier gain adjustments
D)Quadrupole resonance frequency stabilization
💡 Explanation
Ions are deflected based on their mass-to-charge ratio during mass spectrometry, providing separate signals; this is the mass analyzer mechanism. Therefore, mass differences indicate different isotopes, rather than being controlled by photoionization or detectors in other processes.
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