نتایج جستجو برای: ion mobility
تعداد نتایج: 295924 فیلتر نتایج به سال:
The 3-dimensional gas-phase conformations of polyhedral oligomeric silsesquioxanes (POSS), R8Si8O12, capped with styryl and phenylethyl substituents (R) and cationized by sodium were examined. MALDI was used to generate sodiated styryl–POSS (Na+Sty8T8) and phenylethyl–POSS (Na+PhEt8T8) ions and their collision cross-sections in helium were measured using ion mobility-based methods. Five distinc...
A planar high field asymmetric waveform ion mobility spectrometer (PFAIMS) with a micro-machined drift tube was characterized as a detector for capillary gas chromatography. The performance of the PFAIMS was compared directly to that of a flame ionization detector (FID) for the separation of a ketone mixture from butanone to decanone. Effluent from the column was continuously sampled by the det...
Title of Document: QUANTIFYING PARTICLE PROPERTIES FROM ION-MOBILITY MEASUREMENTS. Mingdong Li, Doctor of Philosophy, 2012 Directed By: Michael R. Zachariah, Professor Chemical Physics Program Department of Mechanical Engineering and Chemistry Nanoparticles have received considerable interest due to the wide variety of potential applications in biomedical, optical, and electronic fields. Howeve...
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