Leferink J G, Maes R A
J Assoc Off Anal Chem. 1977 Jan;60(1):21-6.
The mass spectra of some butyrophenones are presented. Electron impact ionization and chemical ionization with isobutane as the reagent gas are compared. The chemical ionization spectra show the quasi molecular ion (M + H)+ to be the most abundant ion. Important fragments in the electron impact spectra are discussed for easy determination of other similar compounds.
给出了一些丁酰苯类化合物的质谱图。比较了以异丁烷为反应气的电子轰击电离和化学电离。化学电离谱显示准分子离子（M + H）⁺是最丰富的离子。讨论了电子轰击谱中的重要碎片，以便于确定其他类似化合物。
