The literatures reviewed confirm the existence of some unique responses of molecules to photon absorption but did not associate their findings to the ionization patterns of the molecules studied.
Authentic mycotoxins (2, 4, 8, and 10 µL of 100 ppm) were used for generation of standard curves, as well as confirmation of ionization patterns of each mycotoxin for detection.
Toluene (8.8 eV IP), acetone (9.7 eV IP), or anisole (8.2 eV IP) were used as APPI additives at a concentration of 10% (v/v) to enhance ionization and to study the effect of solvent conditions on ionization patterns and relative proportions of geometrical isomers/conformers formed during the photoionization process.
To test the performance, photoemission studies have been conducted to resolve above-threshold-ionization patterns from Xe atoms exposed to intense ultrashort laser pulses as well as single photon ionization of Ne atoms using tunable synchrotron radiation with photon energies up to 600 eV.
The mass spectra of these molecules showed enhanced molecular ions as well as ionization and fragmentation patterns characteristic of the compounds studied.
Based on hypothetical relationships between lipophilicity, ionization and staining patterns, the distribution of the styryl compounds in different subcellular compartments was predicted using an established mathematical modeling approach [33, 39].
A large user-created database (>1,900 spectra) of mass spectral electron ionization (EI) fragmentation patterns of TMS-derivatized compounds as well as the Wiley Registry 8th Edition combined with NIST 05 mass spectral database were used to identify the metabolites of interest to be quantified.
A large user-created database (>1800 spectra) of mass spectral electron ionization (EI) fragmentation patterns of TMS-derivatized compounds, as well as the Wiley Registry 8th Edition combined with NIST 05 mass spectral database, were used to identify the metabolites of interest to be quantified.
Ionization efficiency and the fragmentation pattern were evaluated by infusion of standard solutions of 10 μM GDP and GTP.
For example, electrospray ionization (ESI) MS showed a pattern with intervals of Δ(m/ z)=46, expected for a [H2P-BH2] moiety, up to 1700 Da, corresponding to up to ca. 37 repeat units (see Figure S12).
