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Fig. 2 | Journal of Nanobiotechnology

Fig. 2

From: Temporally and spatially resolved molecular profiling in fingerprint analysis using indium vanadate nanosheets-assisted laser desorption ionization mass spectrometry

Fig. 2

MS spectra of four fatty acids analyzed by using (a) CHCA, (b) 9-AA, and (c) IVONSs:Sm in negative-ion mode, respectively. (d) MS spectra of four fatty acids analyzed by using graphene (1) and CeO2 (2) in negative-ion mode. (e) MS intensity comparison among four fatty acids using different nano-matrices: graphene (1), CeO2 (2), IVONSs (3), and IVONSs:Sm (4). (f) Optimization of MS signal intensity versus the molar ratio of Sm doping amount for IVONS:Sm. (g) IVONSs:Sm-assisted LDI-MS spectra of LA and OA mixtures with different concentrations of KSCN in negative-ion mode, and the corresponding schematic diagram of the negative-ion LDI mechanism based on IVONSs:Sm (inset). (h) Electron density profile and (i) differential electron density profile of IVONSs:Sm

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Journal of Nanobiotechnology

ISSN: 1477-3155

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