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1959, Veröffentlichungen des Instituts für Bankwirtschaft und Bankrecht an der Universität Köln, Volume Bd. 6 [i.e. 5], 73
Book
Rapid Communications in Mass Spectrometry, ISSN 0951-4198, 06/2009, Volume 23, Issue 12, pp. 1879 - 1884
Journal Article
Rapid Communications in Mass Spectrometry, ISSN 0951-4198, 02/2019, Volume 33, Issue 4, pp. 343 - 350
Rationale Stable hydrogen and carbon isotope ratios of methoxy groups (OCH3) of plant organic matter have many potential applications in biogeochemical,... 
Spectroscopy | Organic matter | Reference materials | Balances (scales) | Hydrogen isotopes | Hydrogen | Sulfates | Carbon | Isotope ratios | Standards | Carbon isotopes | Gas chromatography | Scientific imaging | Mass spectrometry | Isotopes
Journal Article
ANALYTICAL CHEMISTRY, ISSN 0003-2700, 04/2019, Volume 91, Issue 8, pp. 5067 - 5073
Journal Article
Rapid communications in mass spectrometry : RCM, ISSN 0951-4198, 02/2019, Volume 33, Issue 4, pp. 343 - 350
Stable hydrogen and carbon isotope ratios of methoxy groups (OCH ) of plant organic matter have many potential applications in biogeochemical, atmospheric and... 
Journal Article
Plasma Processes and Polymers, ISSN 1612-8850, 10/2017, Volume 14, Issue 10, p. n/a
We treated water samples with a non‐thermal atmospheric pressure plasma jet and pure gas flow. Stable isotope measurements of water samples were performed by... 
stable isotopes | plasma treatment | plasma jet | plasma‐liquid interactions | plasma-liquid interactions | Plasma physics | Equilibrium conditions | Enrichment | Plasma | Plasma jets | Atmospheric pressure | Gas flow | Ventilation
Journal Article
Oecologia, ISSN 0029-8549, 1/2005, Volume 142, Issue 1, pp. 70 - 82
We present a comprehensive dataset of hourly, daily, and monthly measurements of carbon isotope measurements of CO2 in canopy air from a temperate deciduous... 
CO 2 | Hainich | Stable carbon isotope 13 C | LifeSciences | Vapour pressure deficit | Eddy flux | Stable carbon isotope
Journal Article
Rapid Communications in Mass Spectrometry, ISSN 0951-4198, 04/2016, Volume 30, Issue 7, p. 859
  Rationale The widely used l-glutamic acid isotopic reference material USGS41, enriched in both 13C and 15N, is nearly exhausted. A new material, USGS41a, has... 
Journal Article
Rapid Communications in Mass Spectrometry, ISSN 0951-4198, 07/2016, Volume 30, Issue 13, p. 1523
  Rationale The isotopic composition of greenhouse gases helps to constrain global budgets and to study sink and source processes. We present a new system for... 
Methane | Quality control | Carbon dioxide | Isotopes
Journal Article
Pure and Applied Chemistry, ISSN 0033-4545, 05/2010, Volume 82, Issue 8, pp. 1719 - 1733
Measurements of δ( C) determined on CO with an isotope-ratio mass spectrometer (IRMS) must be corrected for the amount of O in the CO . For data consistency,... 
oxygen isotope ratio | δ | O correction | C) correction | O) correction | IUPAC Inorganic Chemistry Division | Oxygen isotope ratio | IUPAC inorganic chemistry division
Journal Article
Plant, Cell & Environment, ISSN 0140-7791, 02/2014, Volume 37, Issue 2, pp. 382 - 391
Journal Article
Pure and Applied Chemistry, ISSN 0033-4545, 03/2016, Volume 88, Issue 3, pp. 293 - 306
The Commission on Isotopic Abundances and Atomic Weights (ciaaw.org) of the International Union of Pure and Applied Chemistry (iupac.org) has revised the Table... 
critical evaluation | isotopic abundance | isotopes | IUPAC Technical Report | elements | atomic weight | periodic table | ciaaw.org | GADOLINIUM | REFERENCE SAMPLE | WATERS | CHEMISTRY, MULTIDISCIPLINARY | MASS-SPECTROMETRY | ATOMIC-WEIGHT | ABSOLUTE ABUNDANCE | GAS | ABUNDANCE RATIOS | STANDARD | HELIUM | Atomic properties | Isotopes | Atomic weights | Organic chemistry | Abundance | Composition | Uncertainty | Tables (data) | Unions
Journal Article
Pure and Applied Chemistry, ISSN 0033-4545, 03/2016, Volume 88, Issue 3, pp. 265 - 291
Journal Article
Rapid Communications in Mass Spectrometry, ISSN 0951-4198, 09/2010, Volume 24, Issue 17, pp. 2687 - 2688
Journal Article
Analytical Chemistry, ISSN 0003-2700, 04/2006, Volume 78, Issue 7, pp. 2439 - 2441
Journal Article
Analytical Chemistry, ISSN 0003-2700, 04/2006, Volume 78, Issue 7, pp. 2439 - 2441
Consistency of delta C-13 measurements can be improved 39-47% by anchoring the delta C-13 scale with two isotopic reference materials differing substantially... 
ORGANIC REFERENCE MATERIALS | CARBON | ISOTOPE MEASUREMENTS | CHEMISTRY, ANALYTICAL
Journal Article