Matrix assisted laser desorption ionization (MALDI) and laser desorption ionization (LDI) mass spectrometry for trace uranium determination: The use of C60-fullerene as a matrix

被引：0

作者：

Havel J. ^{[1
]}

Soto-Guerrero J. ^{[1
,2
]}

机构：

[1] Department of Analytical Chemistry, Faculty of Science, Masaryk University, 61137 Brno

[2] Lab. of Research and Development, 3M México, Zona Industrial del Potosí

来源：

Journal of Radioanalytical and Nuclear Chemistry | 2005年 / 263卷 / 2期

关键词：

Uranium; Fullerene; Laser Power; Matrix Assist Laser Desorption Ionization; Laser Desorption Ionization;

D O I：

10.1007/s10967-005-0080-7

中图分类号：

学科分类号：

摘要：

The use of buckminsterfullerene (C60) carbon clusters as a matrix for MALDI-TOFMS of uranium determination was studied. The C60 fullerene is easily ionized either to C60- or C 60+ ions and when increasing the laser energy, the destruction of C60 to C58 C56, C54, etc. fragments and the formation of higher carbon clusters C106 +, C108+, C118+, etc. is observed. In the same time with the fullerene destruction, the intensity of uranium oxide peaks UO2+ and UO+ is intensified. Conditions such as laser energy and the use of linear, reflectron, negative or positive modes were studied and the detection limit of uranium down to ∼50 femto mol of uranium was reached. © 2005 Akadémiai Kiadó.

引用

页码：489 / 492

页数：3

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