High mass resolution glow discharge mass spectrometry using an external ion source FT-ICR mass spectrometer

Watson, Clifford H.; Wronka, John; Laukien, Frank H.; Barshick, C. M.; Eyler, John R.

doi:10.1021/ac00068a016

Cited by 34 publications

(30 citation statements)

References 11 publications

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“…[18][19][20][21][22][23][24] The ion/ molecule chemistry discussed in this work could also be used to advantage in Fourier transform ion cyclotron resonance instruments which incorporate various atomic ion sources. [25][26][27][28] For example, selective ion/ molecule chemistry could be used to shift the m/z ratio of an interferent species so that selective and efficient removal from the trap could be effected prior to mass analysis.…”

Section: 15mentioning

confidence: 99%

Beneficial Ion/Molecule Reactions in Elemental Mass Spectrometry

Eiden

Barinaga

Koppenaal

1997

Rapid Commun. Mass Spectrom.

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A plasma source ion trap (PSIT) mass spectrometer has been modified to incorporate a radiofrequency octopole ion guide/collision cell between the ion source and the mass spectrometer. This modification allows ions sampled from the plasma to undergo reactions prior to mass spectrometric analysis. This capability can obviate the need for chemical or chromatographic separation of the sample, remove mass spectral intereferences and enable formation of analytically useful molecular ions. Distinct reaction chemistries can be utilized in the octopole and/or ion trap. Performance of the instrument is dramatically improved if hydrogen gas is introduced into the octopole; molecular hydrogen reacts with Ar + and certain other plasma ions, greatly reduces their intensities, and cools and focuses the ion beam prior to its injection into the ion trap.

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Section: 15mentioning

confidence: 99%

Beneficial Ion/Molecule Reactions in Elemental Mass Spectrometry

Eiden

Barinaga

Koppenaal

1997

Rapid Commun. Mass Spectrom.

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“…A system with an improved differential pumping scheme was developed to yield spectra with a resolution of 290,000 for Crf (Watson et al, 1993). The use of a pulsed-gas glow discharge source yielded even lower pressure in the mass analyzer, resulting in a spectrum with a resolution of 1,450,000 for Cu' (Watson et al, 1996).…”

Section: External Ion Sourcesmentioning

confidence: 99%

Fourier transform mass spectrometry—advancing years (1992-mid. 1996)

Dienes

Pastor

Schürch

et al. 1996

Mass Spectrom. Rev.

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This article is one of a series of Fourier transform mass spectrometry (FTMS) reviews that has appeared in this journal at ca. 3–4 year intervals. A comprehensive review of the recent theoretical developments, instrumental developments, electrospray ionization (ESI), and MALDI is given. Ion dissociation techniques are also discussed because of their contributions to gaining insight into chemical structure. Special sections have been devoted to discussing the emerging fields of surface analysis, polymer analysis, Buckminsterfullerenes (buckyballs), and hydrogen/deuterium exchange studies. This review, although not all‐inclusive, is intended to be a starting point for those wishing to learn more about the current status of FTMS, and also as a representative cross‐section of the literature for those familiar with the technique. © 1997 John Wiley & Sons, Inc.

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“…The necessary mass resolution to separate the two radioisotopes from isobaric interferences, as listed in Table 2, indicates that for direct measurements a very high resolution mass spectrometer (i.e. based on Ion Source Fourier Transformed Ion Cyclotron Resonance) must be employed [19,20]. When the required mass resolution is not available, however, the contribution of isobaric interferences can be calculated and considered.…”

Section: Sensitivity Of the Methodsmentioning

confidence: 99%

Detection of trace radioisotopes in soil, sediment and vegetation by glow discharge mass spectrometry

Betti

Giannarelli

Hiernaut

et al. 1996

Analytical and Bioanalytical Chemistry

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The possibility for the determination of some radioisotopes of cesium, strontium, plutonium, uranium and thorium by glow discharge mass spectrometry (GDMS) in soils, sediments and vegetations is investigated. The preparation of samples is described as a combination of the use of a conductive host matrix and a secondary cathode in order to decrease the dilution effect of the blending material for the trace level determination and to gain a stable discharge. Effects of interferences arising from the nature of the conductive host matrix and of the secondary cathode on the sensitivity of the method are discussed. The determination of (137)Cs and (90)Sr has been attempted and the results obtained were in agreement with those from other analytical techniques. Accuracy, internal and external precisions have been also evaluated. GDMS is shown to be a helpful technique for the determination of radioisotopes in environmental samples. Radioisotopes can be determined according to the matrix of the sample (e.g. grass), also in presence of isobaric interferences. However, limitations still exist on the application of GDMS.

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High mass resolution glow discharge mass spectrometry using an external ion source FT-ICR mass spectrometer

Cited by 34 publications

References 11 publications

Beneficial Ion/Molecule Reactions in Elemental Mass Spectrometry

Beneficial Ion/Molecule Reactions in Elemental Mass Spectrometry

Fourier transform mass spectrometry—advancing years (1992-mid. 1996)

Detection of trace radioisotopes in soil, sediment and vegetation by glow discharge mass spectrometry

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