Critical assessment: Use of supersonic jet spectrometry for complex mixture analysis (IUPAC Technical Report)

Abstract

Republication or reproduction of this report or its storage and/or dissemination by electronic means is permitted without theAbstract: When cooled to a temperature of a few K using supersonic jet expansion into a vacuum, a molecule exists in the lowest vibrational level of the ground electronic state and is isolated at collision-free conditions. The absorption or excitation/fluorescence spectrum is then greatly simplified, when transitions occur from this single vibrational level to a limited number of vibrational levels in the excited electronic state. This method, called supersonic jet spectrometry, is a powerful analytical technique because of its high selectivity, since the chemical species can be accurately identified and selectively quantified using the sharp spectral features even for large molecules. Supersonic jet spectrometry has distinct advantages over other low-temperature spectrometries, in that it can be combined with gas-phase separation and detection techniques such as chromatography or mass spectrometry. Therefore, this spectrometric technique can be used as a versatile analytical means, not only for basic research on pure substances, but also for practical trace analysis of chemical species in multicomponent samples (e.g., in biological monitoring or in environmental monitoring).

Dispersion interactions, electronic absorption spectra of anthracenes in polar glassy media at 77–300 K, and the change in polarizability upon excitation

“…For many anthracenes, as for a number of other organic compounds, these data are generalized in [29]. From (9) it follows that…”

Sensitive and Selective Analysis of Polychlorinated Dibenzo-p-dioxins/Dibenzofurans and Their Precursors by Supersonic Jet/Resonance-Enhanced Multiphoton Ionization/Time-of-Flight Mass Spectrometry

“…[2][3][4][5][12][13][14][15]18,21 This section describes the novel sample inlet system and the apparatus used in our laboratory.…”

“…2,3,[18][19][20][21] In this review, however, we wish to focus on methods for enhancing the sensitivity and selectivity for the on-line measurement of PCDD/Fs and their precursors. As a premise for improving sensitivity as well as selectivity, the resonance wavelengths of PCDD/Fs and their precursors are listed.…”

Selective Ionization of 2,4-Xylenol in Mass Spectrometry Using a Tunable Laser and Supersonic Jet Technique

“…12 The time for analysis was, unfortunately, increased to > 1 h, and the width of the peak became very broad. [16][17][18] However, this approach has not yet been applied to xylenols and ethylphenols.…”