A continuous-flow technique has been developed to analyse the deltaD and
delta(13)C values for CH4 from gas samples, in a single run. This is
achieved by splitting the sample gas stream and directing the streams
simultaneously through a CuNiPt combustion reactor and an alumina
pyrolysis reactor. The CO2 from CH4 combustion is trapped in a liquid
nitrogen trap while the H-2 exiting the pyrolysis reactor is directed to
the mass spectrometer for deltaD(CH4) determination. The CO2 is then
sublimed and directed to the mass spectrometer for delta(13)C(CH4)
determination. Sample runs take approximately 10 minutes. This technique
gives accurate delta(13)C(CH4) results to within +/-0.3-0.5parts per
thousand and deltaD(CH4) results to within +/-2-5parts per thousand.
Injection volumes between 0.5 and 2.5 muL of CH4, equivalent to between
20 and 100 nmol CH4, are required for accurate delta(13)C and deltaD
analyses, respectively, using sample injection into a split flow with a
split ratio of 10. This method provides rapid, accurate and reproducible
results on multiple sample runs and is, therefore, an ideal method for
analysing natural gas samples from a variety of sources. Copyright (C)
2003 John Wiley Sons, Ltd.
%0 Journal Article
%1 ISI:000188699500005
%A Potter, J
%A Siemann, MG
%C THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND
%D 2004
%I JOHN WILEY & SONS LTD
%J RAPID COMMUNICATIONS IN MASS SPECTROMETRY
%K imported myown
%N 2
%P 175-180
%R 10.1002/rcm.1311
%T A new method for determining delta C-13 and delta D simultaneously for
CH4 by gas chromatography continuous-flow isotope-ratio mass
spectrometry
%U https://doi.org/10.1002/rcm.1311
%V 18
%X A continuous-flow technique has been developed to analyse the deltaD and
delta(13)C values for CH4 from gas samples, in a single run. This is
achieved by splitting the sample gas stream and directing the streams
simultaneously through a CuNiPt combustion reactor and an alumina
pyrolysis reactor. The CO2 from CH4 combustion is trapped in a liquid
nitrogen trap while the H-2 exiting the pyrolysis reactor is directed to
the mass spectrometer for deltaD(CH4) determination. The CO2 is then
sublimed and directed to the mass spectrometer for delta(13)C(CH4)
determination. Sample runs take approximately 10 minutes. This technique
gives accurate delta(13)C(CH4) results to within +/-0.3-0.5parts per
thousand and deltaD(CH4) results to within +/-2-5parts per thousand.
Injection volumes between 0.5 and 2.5 muL of CH4, equivalent to between
20 and 100 nmol CH4, are required for accurate delta(13)C and deltaD
analyses, respectively, using sample injection into a split flow with a
split ratio of 10. This method provides rapid, accurate and reproducible
results on multiple sample runs and is, therefore, an ideal method for
analysing natural gas samples from a variety of sources. Copyright (C)
2003 John Wiley Sons, Ltd.
@article{ISI:000188699500005,
abstract = {{A continuous-flow technique has been developed to analyse the deltaD and
delta(13)C values for CH4 from gas samples, in a single run. This is
achieved by splitting the sample gas stream and directing the streams
simultaneously through a CuNiPt combustion reactor and an alumina
pyrolysis reactor. The CO2 from CH4 combustion is trapped in a liquid
nitrogen trap while the H-2 exiting the pyrolysis reactor is directed to
the mass spectrometer for deltaD(CH4) determination. The CO2 is then
sublimed and directed to the mass spectrometer for delta(13)C(CH4)
determination. Sample runs take approximately 10 minutes. This technique
gives accurate delta(13)C(CH4) results to within +/-0.3-0.5parts per
thousand and deltaD(CH4) results to within +/-2-5parts per thousand.
Injection volumes between 0.5 and 2.5 muL of CH4, equivalent to between
20 and 100 nmol CH4, are required for accurate delta(13)C and deltaD
analyses, respectively, using sample injection into a split flow with a
split ratio of 10. This method provides rapid, accurate and reproducible
results on multiple sample runs and is, therefore, an ideal method for
analysing natural gas samples from a variety of sources. Copyright (C)
2003 John Wiley Sons, Ltd.}},
added-at = {2018-01-25T13:38:08.000+0100},
address = {{THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND}},
affiliation = {{Potter, J (Reprint Author), Tech Univ Clausthal, Inst Mineral \& Mineral Rohstoffe, Adolph Roemer Str 2A, D-38678 Clausthal Zellerfeld, Germany.
Tech Univ Clausthal, Inst Mineral \& Mineral Rohstoffe, D-38678 Clausthal Zellerfeld, Germany.}},
author = {Potter, J and Siemann, MG},
author-email = {{joanna.potter@tu-clausthal.de}},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2947e378def7f0ce5e66d9aadd617b973/siemannherzberg},
da = {{2018-01-25}},
doc-delivery-number = {{770AB}},
doi = {{10.1002/rcm.1311}},
interhash = {ad758104ab357e57366810ee17ebde48},
intrahash = {947e378def7f0ce5e66d9aadd617b973},
issn = {{0951-4198}},
journal = {{RAPID COMMUNICATIONS IN MASS SPECTROMETRY}},
journal-iso = {{Rapid Commun. Mass Spectrom.}},
keywords = {imported myown},
keywords-plus = {{INCLUSION VOLATILE ANALYSIS; HYDROGEN-ISOTOPE; ZINC REAGENT; D/H
ANALYSIS; WATER; PRECISION; PYROLYSIS; REDUCTION; FRACTIONATION;
SEPARATION}},
language = {{English}},
number = {{2}},
number-of-cited-references = {{28}},
pages = {{175-180}},
publisher = {{JOHN WILEY \& SONS LTD}},
research-areas = {{Biochemistry \& Molecular Biology; Chemistry; Spectroscopy}},
times-cited = {{9}},
timestamp = {2018-01-25T12:38:18.000+0100},
title = {{A new method for determining delta C-13 and delta D simultaneously for
CH4 by gas chromatography continuous-flow isotope-ratio mass
spectrometry}},
type = {{Article}},
unique-id = {{ISI:000188699500005}},
url = {https://doi.org/10.1002/rcm.1311},
usage-count-last-180-days = {{0}},
usage-count-since-2013 = {{6}},
volume = {{18}},
web-of-science-categories = {{Biochemical Research Methods; Chemistry, Analytical; Spectroscopy}},
year = {{2004}}
}
