scholarly journals A trio of laser ablation in concert with two ICP-MSs: Simultaneous, pulse-by-pulse determination of U-Pb discordant ages and a single spot Hf isotope ratio analysis in complex zircons from petrographic thin sections

2012 ◽  
Vol 13 (3) ◽  
pp. n/a-n/a ◽  
Author(s):  
Darren L. Tollstrup ◽  
Lie-Wen Xie ◽  
Josh B. Wimpenny ◽  
Emily Chin ◽  
Cin-Ty Lee ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Isotope Ratio ◽  
Hf Isotope ◽  
Ratio Analysis ◽  
Thin Sections ◽  
Single Spot ◽  
Isotope Ratio Analysis

Determination of Authenticity of Sake by Carbon Isotope Ratio Analysis

1983 ◽  
Vol 66 (6) ◽  
pp. 1405-1408 ◽  
Author(s):  
Glenn E Martin ◽  
James M Burggraff ◽  
Felipe C Alfonso ◽  
Donald M Figert
Keyword(s):  
Isotope Ratio ◽  
Liquid Scintillation ◽  
Carbon Isotope Ratio ◽  
Cane Sugar ◽  
Stable Isotope Ratio ◽  
Ratio Analysis ◽  
Isotope Ratio Analysis ◽  
Stable Isotope Ratio Analysis ◽  
Ethanol Fraction

Abstract Sake samples are fractionally distilled so that the resultant ethanol concentration of the distillate is approximately 95%. Determination of 14C by liquid scintillation counting on the ethanol fraction differentiates alcohol produced by fermentation from synthetic ethanol produced from fossil fuel sources. 13C/12C stable isotope ratio analysis (SIRA) is capable of detecting alcohol from a cane or corn source in sake samples. This analysis also shows the addition of corn or cane sugar before or after fermentation of the sake.

Precise analysis of calcium stable isotope variations in biological apatites using laser ablation MC-ICPMS

2016 ◽  
Vol 31 (1) ◽  
pp. 152-162 ◽  
Author(s):  
Théo Tacail ◽  
Philippe Télouk ◽  
Vincent Balter
Keyword(s):  
Laser Ablation ◽  
Stable Isotope ◽  
Isotope Ratio ◽  
Tooth Enamel ◽  
Ratio Analysis ◽  
Precise Analysis ◽  
Isotope Ratio Analysis ◽  
Isotopic Variations ◽  
Non Destructive

First method for in situ Ca isotope ratio analysis in bioapatites, allowing quasi non-destructive exploration of tooth enamel isotopic variations.

Determination of rhizosphere13C pulse signals in soil thin sections by laser ablation isotope ratio mass spectrometry

2002 ◽  
Vol 16 (23) ◽  
pp. 2190-2194 ◽  
Author(s):  
Patricia M.C. Bruneau ◽  
Nick Ostle ◽  
Donald A. Davidson ◽  
Ian C. Grieve ◽  
Anthony E. Fallick
Keyword(s):  
Mass Spectrometry ◽  
Laser Ablation ◽  
Isotope Ratio ◽  
Isotope Ratio Mass Spectrometry ◽  
Thin Sections

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

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.

Sign in / Sign up

Export Citation Format

Share Document