Stable Carbon Isotopic Analysis of Low-Level Methane in Water and Gas

1997 ◽  
Vol 69 (1) ◽  
pp. 40-44 ◽  
Author(s):  
Francis J. Sansone ◽  
Brian N. Popp ◽  
Terri M. Rust
Keyword(s):  
Isotopic Analysis ◽  
Stable Carbon ◽  
Low Level ◽  
Carbon Isotopic

Recognition of n-alkyl and isoprenoid algaenans in marine sediments by stable carbon isotopic analysis of pyrolysis products of kerogens

1998 ◽  
Vol 28 (3-4) ◽  
pp. 179-194 ◽  
Author(s):  
Ingeborg M Höld ◽  
Stefan Schouten ◽  
Heidy M.E van Kaam-Peters ◽  
Jaap S Sinninghe Damsté
Keyword(s):  
Marine Sediments ◽  
Isotopic Analysis ◽  
Stable Carbon ◽  
Pyrolysis Products ◽  
Carbon Isotopic

Monitoring trichloroethene remediation at an iron permeable reactive barrier using stable carbon isotopic analysis

2005 ◽  
Vol 78 (4) ◽  
pp. 313-325 ◽  
Author(s):  
Nancy VanStone ◽  
Andrzej Przepiora ◽  
John Vogan ◽  
Georges Lacrampe-Couloume ◽  
Brian Powers ◽  
...  
Keyword(s):  
Isotopic Analysis ◽  
Permeable Reactive Barrier ◽  
Stable Carbon ◽  
Reactive Barrier ◽  
Carbon Isotopic

Diet of Australopithecus robustus at Swartkrans from stable carbon isotopic analysis

1994 ◽  
Vol 27 (4) ◽  
pp. 361-372 ◽  
Author(s):  
Julia A. Lee-Thorp ◽  
Nikolaas J. van der Merwe ◽  
C.K. Brain
Keyword(s):  
Isotopic Analysis ◽  
Stable Carbon ◽  
Carbon Isotopic ◽  
Australopithecus Robustus

scholarly journals Determination of gas recovery efficiency at two Danish landfills by performing downwind methane measurements and stable carbon isotopic analysis

2018 ◽  
Vol 73 ◽  
pp. 220-229 ◽  
Author(s):  
Ehsan F. Aghdam ◽  
Anders M. Fredenslund ◽  
Jeffrey Chanton ◽  
Peter Kjeldsen ◽  
Charlotte Scheutz
Keyword(s):  
Isotopic Analysis ◽  
Recovery Efficiency ◽  
Stable Carbon ◽  
Gas Recovery ◽  
Carbon Isotopic

Assessment of Prehistoric Bison Foraging and Movement Patterns Via Stable-Carbon Isotopic Analysis

1986 ◽  
Vol 31 (113) ◽  
pp. 193-205 ◽  
Author(s):  
Brian Chisholm ◽  
Jonathan Driver ◽  
Sylvain Dube ◽  
Henry P. Schwarcz
Keyword(s):  
Movement Patterns ◽  
Isotopic Analysis ◽  
Stable Carbon ◽  
Carbon Isotopic

scholarly journals Optimizing sample pretreatment for compound-specific stable carbon isotopic analysis of amino sugars in marine sediment

2014 ◽  
Vol 11 (17) ◽  
pp. 4869-4880 ◽  
Author(s):  
R. Zhu ◽  
Y.-S. Lin ◽  
J. S. Lipp ◽  
T. B. Meador ◽  
K.-U. Hinrichs
Keyword(s):  
Marine Sediment ◽  
Carbon Isotopic Composition ◽  
Amino Sugar ◽  
Isotopic Analysis ◽  
Amino Sugars ◽  
Stable Carbon ◽  
Turnover Rates ◽  
Organic Detritus ◽  
Minimum Requirement ◽  
Carbon Isotopic

Abstract. Amino sugars are quantitatively significant constituents of soil and marine sediment, but their sources and turnover in environmental samples remain poorly understood. The stable carbon isotopic composition of amino sugars can provide information on the lifestyles of their source organisms and can be monitored during incubations with labeled substrates to estimate the turnover rates of microbial populations. However, until now, such investigation has been carried out only with soil samples, partly because of the much lower abundance of amino sugars in marine environments. We therefore optimized a procedure for compound-specific isotopic analysis of amino sugars in marine sediment, employing gas chromatography–isotope ratio mass spectrometry. The whole procedure consisted of hydrolysis, neutralization, enrichment, and derivatization of amino sugars. Except for the derivatization step, the protocol introduced negligible isotopic fractionation, and the minimum requirement of amino sugar for isotopic analysis was 20 ng, i.e., equivalent to ~8 ng of amino sugar carbon. Compound-specific stable carbon isotopic analysis of amino sugars obtained from marine sediment extracts indicated that glucosamine and galactosamine were mainly derived from organic detritus, whereas muramic acid showed isotopic imprints from indigenous bacterial activities. The δ13C analysis of amino sugars provides a valuable addition to the biomarker-based characterization of microbial metabolism in the deep marine biosphere, which so far has been lipid oriented and biased towards the detection of archaeal signals.

Stable carbon isotopic analysis and the botanical origin of ethanol in Brazilian brandies

1999 ◽  
Vol 32 (10) ◽  
pp. 665-668 ◽  
Author(s):  
Lucilene Pissinatto ◽  
Luiz A Martinelli ◽  
Reynaldo L Victoria ◽  
Plinio B.de Camargo
Keyword(s):  
Isotopic Analysis ◽  
Botanical Origin ◽  
Stable Carbon ◽  
Carbon Isotopic
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