EVALUATION OF MATRIX-ASSISTED LASER-DESORPTION IONIZATION (MALDI) TIME-OF-FLIGHT (TOF) MASS-SPECTROMETRY AS A METHOD FOR THE DETERMINATION OF THE MOLECULAR-MASS DISTRIBUTIONS OF HUMIC ACIDS

被引：27

作者：

REMMLER, M

GEORGI, A

KOPINKE, FD

机构：

来源：

EUROPEAN MASS SPECTROMETRY | 1995年 / 1卷 / 04期

关键词：

D O I：

10.1255/ejms.96

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：

Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry was investigated for the characterization of natural polymers of environmental interest. The results suggest that the method can be used only with limitations, because of cluster formation and fragmentation phenomena, for the determination of the molecular mass distribution of humic acids. Evidence for existing basic groups in this materials was found. However, a quantification or estimation of the proportion of these basic units to the intact humic acid structure is not yet possible.

引用

页码：403 / 407

页数：5

共 21 条

[1]

ASTER B, 1994, THESIS DORTMUND

[2]

BICKE C, 1993, GIT FACHZ LAB, V42, P77

[3] LASER DESORPTION FOURIER-TRANSFORM MASS-SPECTRA OF POLY(PHENYLENE SULFIDE), POLYANILINE, POLYVINYL PHENOL), POLYPYRENE, AND RELATED OLIGOMERS - EVIDENCE FOR CARBON CLUSTERS AND FEASIBILITY OF PHYSICAL DIMENSION MEASUREMENT [J].