Zobrazeno 1 - 10
of 45
pro vyhledávání: '"D. Zakett"'
Publikováno v:
ChemInform. 25
Publikováno v:
ChemInform. 26
Autor:
L. W. Nicholson, Bakthan Singaram, Philip R. Rudolf, D. L. Hasha, D. Zakett, William Chrisman, C. T. Goralski
Publikováno v:
ChemInform. 29
Publikováno v:
Analytical Chemistry. 53:723-726
The unique value of charge inversion reactions in mass spectroscopy/mass spectroscopy (MS/MS) for direct characterization of polycyclic aromatic hydrocarbons in untreated solvent-refined coal is demonstrated. The positive ion MS/MS spectra of polycyc
Publikováno v:
The Journal of Physical Chemistry. 82:2359-2362
Procedures are developed in which the reversed-sector double-focusing mass spectrometer is employed to monitor signals due to specified ionic reactions. These procedures are employed to determine chlorine isotope effects for positive and negative ion
Publikováno v:
International Journal of Mass Spectrometry and Ion Physics. 49:233-251
This report gives data about the construction and performance of an atmospheric-pressure ionization source which provides positive or negative ions for a tandem mass spectrometer. The ions can be mass-analyzed in one or both of two Balzer quadrupole
Publikováno v:
Analytical Chemistry. 51:1849-1852
Particular nitrogen-containing compounds, in some cases individual isomers, can be identified in coal liquid samples by mass-analyzed ion kinetic energy spectrometry (MIKES). This is done directly, without prior treatment or fractionation of the samp
Publikováno v:
Analytical Chemistry. 54:2215-2219
Comparisons are made between collision-induced dissociation spectra obtained by mass spectrometry/mass spectrometry (MS/MS) using triple quadrupole and sector instruments. Data are given for methyl-substituted aza polynuclear aromatics and the isomer
Publikováno v:
Analytica Chimica Acta. 119:129-135
A double quadrupole mass spectrometer has been constructed to study unimolecular and collision-induced dissociation products from mass-selected ions. The two quadrupoles are closely coupled and the dissociation products sampled from a 2.5-mm interqua