DYNAMICS OF MATRIX-ASSISTED LASER-DESORPTION AS REVEALED BY THE ASSOCIATED ACOUSTIC-SIGNAL

被引：14

作者：

HEISE, TW

YEUNG, ES

机构：

[1] US DOE,AMES LAB,AMES,IA 50011

[2] IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011

来源：

ANALYTICA CHIMICA ACTA | 1995年 / 299卷 / 03期

关键词：

ACOUSTIC METHODS; PIEZOELECTRIC SENSORS; LASER DESORPTION;

D O I：

10.1016/0003-2670(94)00309-A

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Some characteristics of the commonly used ultraviolet matrices for matrix-assisted laser desorption were determined, including solubilities in methanol and solid-phase absorption spectra. Differences between frontside and rearside desorption geometries are observed. Acoustic and quartz crystal microbalance signals were investigated as possible means of quantification of the amount of material vaporized by each laser pulse. Evidence for the existence of desorption thresholds is presented. Threshold values were determined to be in the 2-3 MW/cm(2) range.

引用

页码：377 / 385

页数：9

共 30 条

[1] MATRIX-ASSISTED ULTRAVIOLET-LASER DESORPTION - EVOLUTION AND PRINCIPLES [J].