Abstract
1. The spectra of the metastable ions (DADI spectra) of 34 benzenepolycarboxylic acid methyl esters have been studied. 2. The DADI spectra contain intense peaks of the metastable ions I-1 and I-2 with nonintegral values of the mass numbers. 3. The appearance of the I-1 and I-2 peaks in the DADI spectra of the compounds investigated is explained by the superposition on the DADI spectrum (decomposition of ions in the second field-free region) of the spectrum of ions formed as a result of processes taking place in the first field-free region of the doublefocussing mass spectrometer.
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Schedule a callMore From: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science
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