Continuous flow stable isotope methods for study of delta C-13 fractionation during halomethane production and degradation

R.M. Kalin, J.T.G. Hamilton, D.B. Harper, L.G. Miller, C. Lamb, J.T. Kennedy, A. Downey, S. McCauley, A.H. Goldstein

Research output: Contribution to journalArticle

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Abstract

Gas chromatography/mass spectrometry/isotope ratio mass spectrometry (GC/MS/IRMS) methods for delta C-13 measurement of the halomethanes CH3Cl,CH3Br, CH3I and methanethiol (CH3SH) during studies of their biological production, biological degradation, and abiotic reactions are presented. Optimisation of gas chromatographic parameters allowed the identification and quantification of CO2, O-2, CH3Cl, CH3Br, CH3I and CH3SH from a single sample, and also the concurrent measurement of delta C-13 for each of the halomethanes and methanethiol. Precision of delta C-13 measurements for halomethane standards decreased (+/-0.3, +/-0.5 and +/-1.3 parts per thousand) with increasing mass (CH3Cl, CH3Br, CH3I, respectively). Given that carbon isotope effects during biological production, biological degradation and some chemical (abiotic) reactions can be as much as 100 parts per thousand, stable isotope analysis offers a precise method to study the global sources and sinks of these halogenated compounds that are of considerable importance to our understanding of stratospheric ozone destruction. Copyright (C) 2001 John Wiley & Sons, Ltd.
LanguageEnglish
Pages357-363
Number of pages7
JournalRapid Communications in Mass Spectrometry
Volume15
Issue number5
DOIs
Publication statusPublished - 15 Mar 2001

Fingerprint

Fractionation
Isotopes
Degradation
Mass spectrometry
Stratospheric Ozone
Carbon Isotopes
Gas chromatography
Gases
methylmercaptan

Keywords

  • gas chromatography
  • mass spectrometry
  • isotope ratio mass spectrometry
  • halomethane
  • stable isotope analysis

Cite this

Kalin, R.M. ; Hamilton, J.T.G. ; Harper, D.B. ; Miller, L.G. ; Lamb, C. ; Kennedy, J.T. ; Downey, A. ; McCauley, S. ; Goldstein, A.H. / Continuous flow stable isotope methods for study of delta C-13 fractionation during halomethane production and degradation. In: Rapid Communications in Mass Spectrometry. 2001 ; Vol. 15, No. 5. pp. 357-363.
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abstract = "Gas chromatography/mass spectrometry/isotope ratio mass spectrometry (GC/MS/IRMS) methods for delta C-13 measurement of the halomethanes CH3Cl,CH3Br, CH3I and methanethiol (CH3SH) during studies of their biological production, biological degradation, and abiotic reactions are presented. Optimisation of gas chromatographic parameters allowed the identification and quantification of CO2, O-2, CH3Cl, CH3Br, CH3I and CH3SH from a single sample, and also the concurrent measurement of delta C-13 for each of the halomethanes and methanethiol. Precision of delta C-13 measurements for halomethane standards decreased (+/-0.3, +/-0.5 and +/-1.3 parts per thousand) with increasing mass (CH3Cl, CH3Br, CH3I, respectively). Given that carbon isotope effects during biological production, biological degradation and some chemical (abiotic) reactions can be as much as 100 parts per thousand, stable isotope analysis offers a precise method to study the global sources and sinks of these halogenated compounds that are of considerable importance to our understanding of stratospheric ozone destruction. Copyright (C) 2001 John Wiley & Sons, Ltd.",
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Kalin, RM, Hamilton, JTG, Harper, DB, Miller, LG, Lamb, C, Kennedy, JT, Downey, A, McCauley, S & Goldstein, AH 2001, 'Continuous flow stable isotope methods for study of delta C-13 fractionation during halomethane production and degradation' Rapid Communications in Mass Spectrometry, vol. 15, no. 5, pp. 357-363. https://doi.org/10.1002/rcm.219

Continuous flow stable isotope methods for study of delta C-13 fractionation during halomethane production and degradation. / Kalin, R.M.; Hamilton, J.T.G.; Harper, D.B.; Miller, L.G.; Lamb, C.; Kennedy, J.T.; Downey, A.; McCauley, S.; Goldstein, A.H.

In: Rapid Communications in Mass Spectrometry, Vol. 15, No. 5, 15.03.2001, p. 357-363.

Research output: Contribution to journalArticle

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T1 - Continuous flow stable isotope methods for study of delta C-13 fractionation during halomethane production and degradation

AU - Kalin, R.M.

AU - Hamilton, J.T.G.

AU - Harper, D.B.

AU - Miller, L.G.

AU - Lamb, C.

AU - Kennedy, J.T.

AU - Downey, A.

AU - McCauley, S.

AU - Goldstein, A.H.

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N2 - Gas chromatography/mass spectrometry/isotope ratio mass spectrometry (GC/MS/IRMS) methods for delta C-13 measurement of the halomethanes CH3Cl,CH3Br, CH3I and methanethiol (CH3SH) during studies of their biological production, biological degradation, and abiotic reactions are presented. Optimisation of gas chromatographic parameters allowed the identification and quantification of CO2, O-2, CH3Cl, CH3Br, CH3I and CH3SH from a single sample, and also the concurrent measurement of delta C-13 for each of the halomethanes and methanethiol. Precision of delta C-13 measurements for halomethane standards decreased (+/-0.3, +/-0.5 and +/-1.3 parts per thousand) with increasing mass (CH3Cl, CH3Br, CH3I, respectively). Given that carbon isotope effects during biological production, biological degradation and some chemical (abiotic) reactions can be as much as 100 parts per thousand, stable isotope analysis offers a precise method to study the global sources and sinks of these halogenated compounds that are of considerable importance to our understanding of stratospheric ozone destruction. Copyright (C) 2001 John Wiley & Sons, Ltd.

AB - Gas chromatography/mass spectrometry/isotope ratio mass spectrometry (GC/MS/IRMS) methods for delta C-13 measurement of the halomethanes CH3Cl,CH3Br, CH3I and methanethiol (CH3SH) during studies of their biological production, biological degradation, and abiotic reactions are presented. Optimisation of gas chromatographic parameters allowed the identification and quantification of CO2, O-2, CH3Cl, CH3Br, CH3I and CH3SH from a single sample, and also the concurrent measurement of delta C-13 for each of the halomethanes and methanethiol. Precision of delta C-13 measurements for halomethane standards decreased (+/-0.3, +/-0.5 and +/-1.3 parts per thousand) with increasing mass (CH3Cl, CH3Br, CH3I, respectively). Given that carbon isotope effects during biological production, biological degradation and some chemical (abiotic) reactions can be as much as 100 parts per thousand, stable isotope analysis offers a precise method to study the global sources and sinks of these halogenated compounds that are of considerable importance to our understanding of stratospheric ozone destruction. Copyright (C) 2001 John Wiley & Sons, Ltd.

KW - gas chromatography

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KW - isotope ratio mass spectrometry

KW - halomethane

KW - stable isotope analysis

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