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Which consequence results when instrument calibration decays in mass spectrometry?

A)Inaccurate mass-to-charge ratio measurements
B)Increased detector signal-to-noise ratio
C)Reduced ionization source fragmentation
D)Elevated vacuum system back-pressure

💡 Explanation

In mass spectrometry, calibration decay causes inaccurate mass-to-charge measurements because the instrument's internal standards shift through matrix effects, skewing reported masses. The instrument misidentifies the actual ionic masses therefore compromising compound identification, rather than improving signal or altering pressure.

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