29 research outputs found
A Functional Group Approach for Prediction of APPI Response of Organic Synthetic Targets
Full text linkAtmospheric Pressure Photoionization as a Powerful Tool for Large-Scale Lipidomic Studies
Full text linkEvaluation of the combination of different atmospheric pressure ionization sources for the analysis of extremely complex mixtures
No full textTime-resolved and product angle-velocity measurements of (CH
No full textWe present a study of the photodissociation of CH3I to CH3 + I in an isolated molecule and in clusters. In previous picosecond pump-probe studies of photodissociation in clusters, we observed very fast sequential radical chemistry. An important recurring reaction is CH3 + CH3I → C2H6+ I. In this paper we present new measurements of the I atom anisotropy and kinetic energy distribution from cluster photodissociation and make comparisons to similar measurements in bare CH3I. Using a new photofragment imaging technique for measuring angle-velocity distributions, we measured an I atom kinetic energy distribution for cluster photodissociation that is substantially broader and of lower energy than that observed for monomer photodissociation. The angular distribution is essentially isotropic in the former case as opposed to highly anisotropic in the latter case
Development of a fast‐switching dual (ESI/APCI) ionization source for liquid chromatography/mass spectrometry
No full textCombining chip-ESI with APLI (cESILI) as a multimode source for analysis of complex mixtures with ultrahigh-resolution mass spectrometry
No full textEffects of Solvent and Ion Source Pressure on the Analysis of Anabolic Steroids by Low Pressure Photoionization Mass Spectrometry
No full textDirect and Sensitive Detection of CWA Simulants by Active Capillary Plasma Ionization Coupled to a Handheld Ion Trap Mass Spectrometer
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