SILVER-NITRATE CHEMICAL IONIZATION FOR ANALYSIS OF HYDROCARBON POLYMERS BY LASER-DESORPTION FOURIER-TRANSFORM MASS-SPECTROMETRY

被引：81

作者：

KAHR, MS ^{[1
]}

WILKINS, CL ^{[1
]}

机构：

[1] UNIV CALIF RIVERSIDE,DEPT CHEM,RIVERSIDE,CA 92521

来源：

JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY | 1993年 / 4卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/1044-0305(93)80002-G

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Addition of silver nitrate to nonpolar hydrocarbon polymer solutions prior to their analysis by laser desorption Fourier transform mass spectrometry is shown to allow efficient silver ion chemical ionization. High-quality mass spectra are thus obtained for polymers, such as polystyrene, polyisoprene, polybutadiene, and polyethylene, that previously failed to yield useful mass spectra using conventional laser desorption. Accurate mass measurement experiments and isotopic ratios verify that the spectra are those of silver-attached oligomer ion distributions. Mass measurement errors for complete oligomer distributions average between 3 and 12 ppm for oligomers with masses between 400 and 6000 D whereas unit mass resolution is maintained throughout the entire spectral range.

引用

页码：453 / 460

页数：8

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