New strategy for the determination of gliadins in maize- or rice-based foods matrix-assisted laser desorption/ionization time-of-flight mass spectrometry: fractionation of gliadins from maize or rice prolamins by acidic treatment

2003 ◽  
Vol 38 (8) ◽  
pp. 862-871 ◽  
Author(s):  
Alberto Hernando ◽  
Israel Valdes ◽  
Enrique Méndez
Keyword(s):  
Mass Spectrometry ◽  
Laser Desorption ◽  
Laser Desorption Ionization ◽  
Ionization Time ◽  
Desorption Ionization ◽  
Flight Mass Spectrometry ◽  
New Strategy ◽  
Matrix Assisted Laser ◽  
Matrix Assisted Laser Desorption

scholarly journals Quantitative determination of peptides using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry

BioTechniques ◽  
2005 ◽  
Vol 38 (6S) ◽  
pp. S13-S17 ◽  
Author(s):  
Jesus A. Gutierrez ◽  
Jill A. Dorocke ◽  
Michael D. Knierman ◽  
Valentina Gelfanova ◽  
Richard E. Higgs ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Quantitative Determination ◽  
Laser Desorption ◽  
Laser Desorption Ionization ◽  
Ionization Time ◽  
Desorption Ionization ◽  
Flight Mass Spectrometry ◽  
Matrix Assisted Laser ◽  
Matrix Assisted Laser Desorption

scholarly journals Determination of isotopic distribution of lead by a matrix assisted laser desorption/ionization versus a laser desorption/ionization time of flight mass spectrometry

2017 ◽  
Vol 71 (1) ◽  
pp. 19-26
Author(s):  
Tina Kamceva ◽  
Maja Nesic ◽  
Milovan Stoiljkovic ◽  
Iva Popovic ◽  
Jadranka Miletic ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Laser Desorption ◽  
Laser Desorption Ionization ◽  
Ionization Time ◽  
Desorption Ionization ◽  
Flight Mass Spectrometry ◽  
Tof Ms ◽  
Matrix Assisted Laser ◽  
Matrix Assisted Laser Desorption

In this work it has been shown that both the laser desorption/ionization mass spectrometry (LDI MS) and the matrix assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI TOF MS) are the simple and quick methods for determination of relative natural isotopic distribution of lead. The analysis of metal salts with these approaches does not require any time-consuming preparation of samples: a single run can take only a minute, and numerous information can be obtained. Results obtained in this work show that chosen matrix has no negative effect on quantitative determination of lead isotopes and support once more the applicability of MALDI TOF MS for lead isotope distribution determination in the sample, and accuracy of data obtained. Additionally, the generation of PbnOn and PbnOn-1 (n: 2 - 6) clusters have been successfully achieved in the positive mode, using the both LDI and MALDI methods. All stoichiometries were confirmed using isotopic pattern modelling.

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