2-(4-HYDROXYPHENYLAZO)-BENZOIC ACID - A SOLID-MATRIX FOR MATRIX-ASSISTED LASER-DESORPTION IONIZATION OF POLYSTYRENE

被引:75
作者
MONTAUDO, G [1 ]
MONTAUDO, MS [1 ]
PUGLISI, C [1 ]
SAMPERI, F [1 ]
机构
[1] CNR,IST CHIM & TECNOL MAT POLIMERICI,I-95125 CATANIA,ITALY
关键词
D O I
10.1002/rcm.1290081221
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Liquid matrices are currently used in matrix assisted laser desorption ionization (MALDI) of non-polar macromolecules, such as polystyrene. We investigated the possibility of using non-liquid compounds as matrices. A series of polystyrene samples was analyzed by MALDI using a time-of-flight (TOF) analyzer. We found that a solid matrix, namely 2-(4-hydroxyphenylazo)-benzoic acid, yields quality mass spectra. The MALDI-TOF spectra were used to measure the parameters which characterize the molecular weight distributions of the polystyrene samples. The values obtained by MALDI-TOF were in good agreement with those obtained by other methods.
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页码:1011 / 1015
页数:5
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