Journal
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
Volume 24, Issue 16, Pages 2431-2438Publisher
WILEY
DOI: 10.1002/rcm.4660
Keywords
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Funding
- Japan Society for the Promotion of Science (JSPS)
- Japanese Ministry of Education, Science, and Culture [20403010]
- Grants-in-Aid for Scientific Research [20403010] Funding Source: KAKEN
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Electrospray droplet impact (EDI)/secondary ion mass spectrometry (SIMS) is a new desorption/ ionization technique for mass spectrometry in which highly charged water clusters produced from atmospheric-pressure electrospray are accelerated in vacuum by several kV and impact on the sample deposited on the metal substrate. In this study, we applied EDI/SIMS directly to fruits, such as bananas, strawberries, grapes and apples. The major components in the fruits - fructose, glucose, sucrose and organic acids - could be observed with strong signal intensities. EDI/SIMS was also applied to the analysis of different regions of strawberries and apples. Compared with matrix-assisted laser desorption/ionization (MALDI), ion signals with lower background signals could be obtained, particularly for the low molecular weight analytes. Copyright (C) 2010 John Wiley & Sons, Ltd.
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