高速原子衝撃イオン化質量分析法における精密質量測定用標準物質の最適化

概要

論文の詳細を見る
In an exact mass measurement by fast-atom bombardment mass spectrometry (FAB-MS), a couple of calibrant ion peaks were selected to calibrate the target ion. The target ion peak should be located between these two calibrant ion peaks on the mass spectrum. Although polyethyleneglycols, cecium iodide and "Ultramark" have been used as promising calibrants, it is generally difficult to obtain the desired ion intensity and mass number using these reagents. In this report we describes the optimization of the internal calibrant in both the positive and negative ionization modes. As a result, the effective ratio of the mixed calibrant was derived. The intensity of the ion signal was also improved by using these mixtures. The optimized calibrant expands the mass region from m/z 600 to 3000 while maintaining with even higher precision.
社団法人日本分析化学会の論文
2004-06-05