期刊
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
卷 356, 期 -, 页码 14-23出版社
ELSEVIER
DOI: 10.1016/j.ijms.2013.09.012
关键词
Imaging mass spectrometry; Microscope mode; PEDA
资金
- EPSRC [EP/G00224X/1]
- EU [238671]
- Engineering and Physical Sciences Research Council [EP/G00224X/1, 1114211] Funding Source: researchfish
- EPSRC [EP/G00224X/1] Funding Source: UKRI
Microscope mode imaging mass spectrometry requires that ions created in a desorption process are focussed both spatially and according to their mass-to-charge ratio, m/z, onto the plane of an imaging detector. However, it is generally difficult to find techniques that optimize both of these parameters simultaneously. The use of pulsed electric fields allows a second order focussing of the ions according to their m/z value, whilst limiting the loss of spatial resolution, albeit over a limited mass range. Here we present a simple method for rescaling the parameters in a pulsed extraction experiment in order to access different mass ranges, whilst still achieving the benefits of simultaneous optimization of mass and spatial resolutions. (C) 2013 Elsevier B.V. All rights reserved.
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