Jaber Arwah J, Wilkins Charles L
Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, 72701, USA.
J Am Soc Mass Spectrom. 2005 Dec;16(12):2009-16. doi: 10.1016/j.jasms.2005.08.006. Epub 2005 Oct 24.
The traditional solvent-based matrix-assisted laser desorption ionization (MALDI) preparation method has been used to analyze nonpolar polymers of various molecular weights. High resolution silver cationized oligomers with masses of up to 12 KDa were measured using 9.4 tesla Fourier transform mass spectrometry (FTMS) with an external ionization source. It was observed that when time-of-flight mass spectrometry was used, the spectra of polyethylene polymers showed abundant low mass fragment ions. However, these fragments were absent from the FTMS spectra.
传统的基于溶剂的基质辅助激光解吸电离（MALDI）制备方法已用于分析各种分子量的非极性聚合物。使用具有外部电离源的9.4特斯拉傅里叶变换质谱（FTMS）测量了质量高达12 kDa的高分辨率银阳离子化低聚物。据观察，当使用飞行时间质谱时，聚乙烯聚合物的光谱显示出丰富的低质量碎片离子。然而，这些碎片在FTMS光谱中不存在。
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