IDENTIFICATION OF MOLECULAR MASSES UP TO 270000-U IN COAL AND COAL-DERIVED PRODUCTS BY MATRIX-ASSISTED LASER-DESORPTION MASS-SPECTROMETRY

被引：31

作者：

JOHN, P ^{[1
]}

JOHNSON, CAF ^{[1
]}

PARKER, JE ^{[1
]}

SMITH, GP ^{[1
]}

HEROD, AA ^{[1
]}

LI, CZ ^{[1
]}

KANDIYOTI, R ^{[1
]}

机构：

[1] UNIV LONDON, IMPERIAL COLL SCI TECHNOL & MED, DEPT CHEM ENGN & CHEM TECHNOL, PRINCE CONSORT RD, LONDON SW7 2BY, ENGLAND

来源：

RAPID COMMUNICATIONS IN MASS SPECTROMETRY | 1993年 / 7卷 / 09期

关键词：

D O I：

10.1002/rcm.1290070903

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Molecular masses up to 270 000 u have been observed during matrix-assisted laser desorption mass spectroscopy on a sample of bituminous coal; the major fraction of desorbed ions appeared between m/z values of 800 and 5000. Similar mass distributions have been found in a coal-liquefaction extract and a pyrolysis tar. The highest molecular masses identified in this work far exceed previously reported high molecular masses found in coal-derived products (12 000 u), which were also detected by laser-desorption mass spectrometry.

引用

页码：795 / 799

页数：5

共 25 条

[1] EVAPORATIVE ANALYZER AS A MASS DETECTOR IN THE SIZE-EXCLUSION CHROMATOGRAPHY OF COAL EXTRACTS [J].