Buko A M, Phillips L R, Fraser B A
Biomed Mass Spectrom. 1983 Jun;10(6):387-93. doi: 10.1002/bms.1200100609.
Under negative ionization conditions, nominal mass calibration of the fast bombardment high field mass spectrometer and data system was accomplished using cesium iodide/glycerol as a reference. Mass calibration at --8 kV accelerating potential extends from m/z 387 to m/z 2170 using xenon fast atoms. Negative xenon FAB mass spectra for human angiotensin I and human gastrin I complement their positive fast atom bombardment spectra. Negative xenon fast atom bombardment spectra of underivatized peptides exhibit molecular proton-abstracted ion envelopes and structurally significant fragment ions. Peptide mixture analysis under negative xenon fast atom bombardment reveals peptide molecular ion envelopes of higher relative intensities than under positive xenon fast atom bombardment.
在负离子化条件下，使用碘化铯/甘油作为参考物，对快原子轰击高场质谱仪和数据系统进行了标称质量校准。在-8 kV加速电压下，使用氙快原子进行质量校准，范围从m/z 387至m/z 2170。人血管紧张素I和人胃泌素I的负氙FAB质谱补充了它们的正快原子轰击质谱。未衍生化肽的负氙快原子轰击质谱显示出分子质子提取离子包络和具有结构意义的碎片离子。负氙快原子轰击下的肽混合物分析显示，肽分子离子包络的相对强度高于正氙快原子轰击下的情况。
