快原子轰击下NaCl,LiCl水溶液浓度对乙酰化松三糖质谱碎裂影响的研究  

Study on the Effect of the Concentration of Na + and Li + on Mass Spectral Fragmentation of An Acetylated Melezitose with Fast Atom Bombardment

作　　者：贺晓然[1] 林孝元[1] 俞振培[1] 何美玉[1] 

机构地区：[1]北京大学化学与分子工程学院

出　　处：《北京大学学报（自然科学版）》1997年第6期725-730,共6页Acta Scientiarum Naturalium Universitatis Pekinensis

摘　　要：利用快原子轰击源研究了乙酰化松三糖的阳离子化分子和碎片离子的相对强度随底物中Ｎａ＋或Ｌｉ＋浓度变化的趋势。表明在适当的Ｎａ＋或Ｌｉ＋浓度下，可得到结构信息较全面的质谱图。The dependence of the relative intensity of cationic molecule and fragmentation ion of an acetylated melezitose on the concentration of Na + or Li + in the matrix was studied by using fast atom bombardment source.It implies that the mass spectrum with complete structural information can be observed in a proper range of the concentration of Na + or Li +.

关 键 词：快原子轰击源 乙酰化松三糖 质谱碎裂 

分 类 号：O629.13[理学—有机化学]