scholarly journals A Refinement of Nitrogen Isotope Analysis of Coal Using Elemental Analyzer/Isotope Ratio Mass Spectrometry and the Carbon and Nitrogen Isotope Compositions of Coals Imported in China

ACS Omega ◽  
2020 ◽  
Vol 5 (13) ◽  
pp. 7636-7640
Author(s):  
Lianjun Feng ◽  
Hongwei Li ◽  
Detian Yan
Keyword(s):  
Mass Spectrometry ◽  
Isotope Ratio ◽  
Isotope Analysis ◽  
Isotope Ratio Mass Spectrometry ◽  
Nitrogen Isotope ◽  
Carbon And Nitrogen ◽  
Nitrogen Isotope Analysis

Stable Nitrogen Isotope Analysis of Amino Acid Enantiomers by Gas Chromatography/Combustion/Isotope Ratio Mass Spectrometry

1997 ◽  
Vol 69 (5) ◽  
pp. 926-929 ◽  
Author(s):  
Stephen A. Macko ◽  
Maria E. Uhle ◽  
Michael H. Engel ◽  
Vladimir Andrusevich
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Amino Acid ◽  
Isotope Ratio ◽  
Isotope Analysis ◽  
Isotope Ratio Mass Spectrometry ◽  
Nitrogen Isotope ◽  
Stable Nitrogen Isotope ◽  
Amino Acid Enantiomers ◽  
Nitrogen Isotope Analysis

A novel gas chromatography-combustion-isotope ratio mass spectrometry derivatization method for nitrogen isotope analysis of nitrate in water

2018 ◽  
Vol 32 (21) ◽  
pp. 1897-1904 ◽  
Author(s):  
An Li ◽  
Qiusheng Chen ◽  
Ligang Pan ◽  
Jieqiong Dong ◽  
Xinxin Jin
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Isotope Ratio ◽  
Isotope Analysis ◽  
Isotope Ratio Mass Spectrometry ◽  
Nitrogen Isotope ◽  
Nitrogen Isotope Analysis

Stable nitrogen isotope analysis of chlorophylls by gas chromatography–isotope ratio mass spectrometry

2006 ◽  
Vol 70 (18) ◽  
pp. A100
Author(s):  
Y. Chikaraishi ◽  
Y. Kashiyama ◽  
N.O. Ogawa ◽  
H. Kitazato ◽  
S. Nomoto ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Isotope Ratio ◽  
Isotope Analysis ◽  
Isotope Ratio Mass Spectrometry ◽  
Nitrogen Isotope ◽  
Stable Nitrogen Isotope ◽  
Nitrogen Isotope Analysis

Isotope ratio analysis of carbon and nitrogen by elemental analyser continuous flow isotope ratio mass spectrometry (EA-CF-IRMS) without the use of a reference gas

2015 ◽  
Vol 30 (1) ◽  
pp. 310-314 ◽  
Author(s):  
L. J. Bay ◽  
S. H. Chan ◽  
T. Walczyk
Keyword(s):  
Mass Spectrometry ◽  
Continuous Flow ◽  
Isotope Ratio ◽  
Isotope Fractionation ◽  
Isotope Ratio Mass Spectrometry ◽  
Nitrogen Isotope ◽  
Ratio Analysis ◽  
New Approach ◽  
Carbon And Nitrogen ◽  
Isotope Ratio Analysis

A new approach to normalize carbon and nitrogen isotope ratios measured by EA-CF-IRMS without using a reference gas for correction of instrumental drifts and instrumental isotope fractionation.

Sources of organic matter (PAHs and n-alkanes) in PM2.5of Beijing in haze weather analyzed by combining the C–N isotopic and PCA-MLR analyses

2016 ◽  
Vol 18 (3) ◽  
pp. 314-322 ◽  
Author(s):  
Xinyue Guo ◽  
Cai Li ◽  
Yang Gao ◽  
Lei Tang ◽  
Meryem Briki ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Organic Matter ◽  
Isotope Ratio ◽  
Isotope Ratio Mass Spectrometry ◽  
Nitrogen Isotope ◽  
Isotope Ratios ◽  
Molecular Composition ◽  
Gas Chromatography Mass Spectrometry ◽  
Carbon And Nitrogen

Organic molecular composition and carbon and nitrogen isotope ratios of PM2.5samples collected in November 2013 were analyzed using gas chromatography/mass spectrometry and isotope ratio mass spectrometry.

scholarly journals Measurement of δ18O and δ2H of water and ethanol in wine by Off-Axis Integrated Cavity Output Spectroscopy and Isotope Ratio Mass Spectrometry

2021 ◽  
Author(s):  
Xing Wang ◽  
Henk G. Jansen ◽  
Haico Duin ◽  
Harro A. J. Meijer
Keyword(s):  
Mass Spectrometry ◽  
Isotope Ratio ◽  
Isotope Analysis ◽  
Isotope Ratio Mass Spectrometry ◽  
Growth Conditions ◽  
The Other ◽  
H Nmr ◽  
Cavity Output ◽  
Pre Treatment ◽  
Output Laser

AbstractThere are two officially approved methods for stable isotope analysis for wine authentication. One describes δ18O measurements of the wine water using Isotope Ratio Mass Spectrometry (IRMS), and the other one uses Deuterium-Nuclear Magnetic Resonance (2H-NMR) to measure the deuterium of the wine ethanol. Recently, off-axis integrated cavity output (laser) spectroscopy (OA-ICOS) has become an easier alternative to quantify wine water isotopes, thanks to the spectral contaminant identifier (SCI). We utilized an OA-ICOS analyser with SCI to measure the δ18O and δ2H of water in 27 wine samples without any pre-treatment. The OA-ICOS results reveal a wealth of information about the growth conditions of the wines, which shows the advantages to extend the official δ18O wine water method by δ2H that is obtained easily from OA-ICOS. We also performed high-temperature pyrolysis and chromium reduction combined with IRMS measurements to illustrate the “whole wine” isotope ratios. The δ18O results of OA-ICOS and IRMS show non-significant differences, but the δ2H results of both methods differ much more. As the δ2H difference between these two methods is mainly caused by ethanol, we investigated the possibility to deduce deuterium of wine ethanol from this difference. The results present large uncertainties and deviate from the obtained 2H-NMR results. The deviation is caused by the other constituents in the wine, and the uncertainty is due to the limited precision of the SCI-based correction, which need to improve to obtain the 2H values of ethanol as alternative for the 2H-NMR method.

Characterization of Canadian Cigarettes Using Multi-Stable Isotope Analysis by Gas Chromatography−Isotope Ratio Mass Spectrometry

2009 ◽  
Vol 57 (4) ◽  
pp. 1151-1155 ◽  
Author(s):  
Marie-Josée Binette ◽  
Pierre Lafontaine ◽  
Micheline Vanier ◽  
Lay-Keow Ng
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Isotope Ratio ◽  
Isotope Analysis ◽  
Isotope Ratio Mass Spectrometry
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