Supercritical fluid chromatography–supersonic jet spectroscopy: I. Microcolumns and direct expansions

Simons, J. K.; Sin, Chung Hang; Zabriskie, Norman A.; Lee, Milton L.; Goates, Steven R.; Fields, Steven M.

doi:10.1002/mcs.1220010408

Cited by 14 publications

(3 citation statements)

References 31 publications

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“…The carrier solution is maintained above the critical point, e.g., 239.4 °C and 79.9 atm for methanol, and is mixed with a make-up gas and then injected into a vacuum [26]. A similar technique has been applied to supercritical fluid chromatography [55]. Alternatively, the sample is first expanded as an aerosol into an antechamber and is then heated and mixed with an expansion (make-up) gas [56].…”

Section: A12 Hyphenated Techniquesmentioning

confidence: 99%

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

Imasaka¹,

Moore²,

Vo‐Dinh³

2003

Pure and Applied Chemistry

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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).

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Section: A12 Hyphenated Techniquesmentioning

confidence: 99%

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

Imasaka¹,

Moore²,

Vo‐Dinh³

2003

Pure and Applied Chemistry

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“…Laser-induced fluorescence in supersonic jet spectroscopy is a recently developed tehnique with a potential still not determined (Simons et al, 1989).…”

Section: 1 Uv and Fluorescence Detectionmentioning

confidence: 99%

Applications of Supercritical Fluids in Industrial Analysis

Dean¹

1993

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“…For nonvolatile or thermally labile molecules, liquid chromatography (LC) based on supercritical fluid sample introduction has been used (12). More recently, supercritical fluid chromatography (SFC) is used, instead of LC, for sample separation (13,14). The assignment of the chemical species is performed by measuring a fluorescence spectrum with an optical multichannel analyzer (8) or by measuring a mass spectrum with a time-of-flight mass spectrometer (MS) (11), In current SSJ spectrometry, a pulsed dye laser is used for excitation or multiphoton ionization of the molecule, because of the wide tuning range and high peak power of the laser.…”

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confidence: 99%