A Gas Chromatographic Separation for the H and C Stable Isotope Ratio Determination of Coal Compounds

1997 ◽  
Vol 69 (11) ◽  
pp. 2030-2034 ◽  
Author(s):  
Diano Antenucci ◽  
Jean-Marie Bouquegneau ◽  
Alain Brasseur ◽  
Patrick Dauby ◽  
René Létolle ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Chromatographic Separation ◽  
Isotope Ratio ◽  
Stable Isotope Ratio ◽  
Ratio Determination ◽  
Gas Chromatographic Separation

Stable Isotope Ratio Determination of the Origin of Vanillin in Vanilla Extracts and Its Relationship to Vanillin/Potassium Ratios

1981 ◽  
Vol 64 (5) ◽  
pp. 1149-1153
Author(s):  
Glenn E Martin ◽  
Felipe C Alfonso ◽  
Donald M Figert ◽  
James M Burggraff
Keyword(s):  
Stable Isotope ◽  
Isotope Ratio ◽  
Stable Isotope Ratio ◽  
Potassium Content ◽  
Ratio Analysis ◽  
Isotope Ratio Analysis ◽  
Stable Isotope Ratio Analysis ◽  
Ratio Determination

Abstract A method is described for isolating vanillin from vanilla extract, followed by stable isotope ratio analysis to determine the amount of natural vanillin contained in adulterated vanilla extracts. After the potassium content is determined, the percent Madagascar and/or Java vanilla beans incorporated into the extract may then be approximated from the vanillin/ potassium ratio.

Determination of glycerol carbon stable isotope ratio for the characterization of Italian balsamic vinegars

2018 ◽  
Vol 69 ◽  
pp. 33-38
Author(s):  
Simona Sighinolfi ◽  
Ilaria Baneschi ◽  
Simona Manzini ◽  
Lorenzo Tassi ◽  
Luigi Dallai ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Ratio ◽  
Stable Isotope Ratio ◽  
Carbon Stable Isotope ◽  
Carbon Stable Isotope Ratio

Simple spreadsheet templates for the determination of the measurement uncertainty of stable isotope ratio delta values

2015 ◽  
Vol 29 (22) ◽  
pp. 2184-2186 ◽  
Author(s):  
Philip J. H. Dunn ◽  
Lu Hai ◽  
Dmitry Malinovsky ◽  
Heidi Goenaga-Infante
Keyword(s):  
Stable Isotope ◽  
Measurement Uncertainty ◽  
Isotope Ratio ◽  
Stable Isotope Ratio

Determination of the Geographical Origin of All Commercial Hake Species by Stable Isotope Ratio (SIR) Analysis

2017 ◽  
Vol 65 (5) ◽  
pp. 1070-1077 ◽  
Author(s):  
Mónica Carrera ◽  
José M. Gallardo
Keyword(s):  
Stable Isotope ◽  
Isotope Ratio ◽  
Geographical Origin ◽  
Stable Isotope Ratio

scholarly journals Determination of the Geographic Origin of Eel Products by Stable Isotope Ratio Analysis

2014 ◽  
Vol 61 (2) ◽  
pp. 54-61 ◽  
Author(s):  
Maya Isshiki ◽  
Satoru Nakamura ◽  
Yasuharu Takashima ◽  
Shouichi Terada ◽  
Yaeko Suzuki
Keyword(s):  
Stable Isotope ◽  
Isotope Ratio ◽  
Geographic Origin ◽  
Stable Isotope Ratio ◽  
Ratio Analysis ◽  
Isotope Ratio Analysis ◽  
Stable Isotope Ratio Analysis

Laboratory-based validation of a passive sampler for determination of the nitrogen stable isotope ratio of ammonia gas

2021 ◽  
Vol 245 ◽  
pp. 118009
Author(s):  
Hiroto Kawashima ◽  
Raiki Ogata ◽  
Takumi Gunji
Keyword(s):  
Stable Isotope ◽  
Isotope Ratio ◽  
Stable Isotope Ratio ◽  
Passive Sampler ◽  
Nitrogen Stable Isotope ◽  
Ammonia Gas

Direct determination of the oxygen 18 stable isotope ratio of in situ water contained in pasty matrices

2015 ◽  
Vol 7 (7) ◽  
pp. 3211-3214 ◽  
Author(s):  
Francois Guyon ◽  
Laetitia Gaillard ◽  
Nathalie Sabathié ◽  
Marie-Hélène Salagoity
Keyword(s):  
Stable Isotope ◽  
Isotope Ratio ◽  
Direct Determination ◽  
Stable Isotope Ratio ◽  
Water Extraction ◽  
System P

Quantification of the oxygen 18 isotope ratio of in situ water without any water extraction using a commercial IRMS system.

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