問題詳情
28. Which of the following statements about mass spectrometry is correct? Ⅰ.The ions are separated based on their charge-to-mass ratio. Ⅱ.Chemical ionization produces more fragmentation than electron ionization.
Ⅲ. Mass spectrometry can be used to accurately measure small differences in isotopic abundance.
(A) I and II only
(B) I and III only
(C) II and IiI only
(D) III only
(E) I only
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增