問題詳情

11. Which statements are TRUE regarding tandem mass spectrometry (MS/MS)?
(1) A tandem mass spectrometer consists of two m/z separators that are connected in series and separated by a collision cell.(2) Tandem mass spectrometry is especially useful with hard ionization techniques that produce a lot of fragmentation.
(3) In precursor ion scan mode, we can identify which product ions come from a particular precursor ion. (4) Tandem mass spectrometers are capable of providing quantitative and qualitative information.
(5) Selected reaction monitoring greatly improves the chromatographic signal-to-noise ratio because it is highly specific for the analyte of interest. Your answer:
(A) (1), (2) and (3)；
(B)(1),(3) and (4)；
(C) (1) and (4)；
(D) (1), (4) and (5)；
(E) (2), (3) and (5).