This chapter shows the electron ionisation (EI) spectrum of toluene and its parameters. The process of ion fragmentation in an mass spectra (MS/MS) instrument is dependent on two primary parameters. One is the energy which the collision process imparts to the target precursor ion and the ...
R.E.March, inEncyclopedia of Analytical Science (Second Edition), 2005 Comparison of performance The product ionmass spectrumof protonated reserpine can be used to affect a comparison of the performances of a TSQ, a QClinear ion trap, and a low-pressure Q2linear ion trap. The TSQ mass spect...
There are different ways to display the results: (i) as a total ion chromatogram (TIC) or reconstructed ion chromatogram (RIC), which is equivalent to a GC chromatogram – a mass spectrum of each one of the GC peaks can be displayed; (ii) as mass chromatograms, which are GC ...
nent of the fullerenes detected in such mass spectra may have been produced during the sampling process. Thus, in such a scenario, the observed mass spectrum may not be a reliable indication of the fullerenes actually produced in the target sample [9]. Moreover, the relative abundances of ...
We have designed a versatile and sensitive liquid chromatographic (LC) system, featuring a monolithic trap column and a very narrow (10 μm ID) fused silica open tubular liquid chromatography (OTLC) separation column functionalized with C18-groups, for separating a wide range of molecules (from...
W. Schönfeld, Fragmentation diagrams for elucidation of decomposition reactions of organic compounds. 1. Aromatic hydrocarbons (in German), Org. Mass Spectrom. 1975, 10, 321. Article Google Scholar C. Lifshitz, Tropylium ion formation from toluene: Solution of an old problem in organic mass ...
Time-correlated ion detection results in a mass spectrum. With photon pulses of ≈ 5-ns pulse width, a drift tube of 30-cm length, and a single particle detection device, a mass resolution of m/gD m (10%) ≈100 could be achieved....
The aromatic hydrocarbon derivatives toluene,p-xylene and ethylbenzene have been studied using mass analyzed threshold ionization MATI spectroscopy. The measurements have been performed with a conventional reflectron time-of-flight mass spectrometer. The ionization energies of these molecules are determined ...
The compounds are colorless and volatile, with melting points of 20° to 25°, 23–24°, and 55–56°C, respectively. The mass spectra show the molecular ion of each compound. The rearrangement ion [F 3C C C C C CF 2] +] gives the strongest peak in each spectrum....
membrane in the opposite direction. The best detection limit has come from Soni et. al. who detected 500 parts per quadrillion (ppq) of toluene with a S/N 11 with data point smoothing (see Soni, M. H.; Baronavski, A. P.; McElvany, S. W. Trace Analysis of Polyaromatic ...