Differentially heated capillary for thermal dissociation of noncovalently bound complexes produced by electrospray ionization

被引：18

作者：

He, F ^{[1
]}

Ramirez, J ^{[1
]}

Garcia, BA ^{[1
]}

Lebrilla, CB ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Chem, Livermore, CA 95616 USA

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 1999年 / 182卷

关键词：

differentially heated capillary; noncovalently bound complex; cyclodextrin; peptide;

D O I：

10.1016/S1387-3806(98)14258-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

A heated capillary consisting of two independently heated segments is used to dissociate gas-phase complexes of peptides and beta-cyclodextrin. By fixing the temperature in the first segment and varying it in the second segment, the complex is first desolvated and then dissociated. The results indicate that the complex is dissociated in the gas phase rather than in the solution phase of an intact droplet. The thermal dissociation profile, the dissociation temperature and apparent Arrhenius parameters E-a and A are obtained. These values are compared to E-a obtained from blackbody infrared radiation dissociation. (C) 1999 Elsevier Science B.V.

引用

页码：261 / 273

页数：13

共 32 条

[1]

[Anonymous], 1982, AKAD KIADO, DOI 10.1002/S19820341113

[2] ACTIVATION-ENERGIES FOR GAS-PHASE DISSOCIATIONS OF MULTIPLY CHARGED IONS FROM ELECTROSPRAY IONIZATION MASS-SPECTROMETRY [J].