Gas chromatographic separation of CO2 and N2O for measurements of .DELTA.13C in atmospheric CO2.
نویسندگان
چکیده
منابع مشابه
N2O influence on isotopic measurements of atmospheric CO2.
In spite of extensive efforts, even the most experienced laboratories dealing with isotopic measurements of atmospheric CO2 still suffer from poor inter-laboratory consistency. One of the complicating factors of these isotope measurements is the presence of N2O, giving rise to mass overlap in the isotope ratio mass spectrometer (IRMS). The aim of the experiment reported here has been twofold: f...
متن کاملShipborne solar absorption measurements of CO2, CH4, N2O and CO
Shipborne solar absorption measurements of CO2, CH4, N2O and CO and comparison with SCIAMACHY WFM-DOAS retrievals T. Warneke, R. de Beek, M. Buchwitz, J. Notholt, A. Schulz, V. Velazco, and O. Schrems Institute of environmental physics, University of Bremen, Bremen, Germany Alfred Wegener Institute, Potsdam, Germany Alfred Wegener Institute, Bremerhaven, Germany Received: 2 April 2004 – Accepte...
متن کاملUpconversion-based lidar measurements of atmospheric CO2.
For the first time an upconversion based detection scheme is demonstrated for lidar measurements of atmospheric CO2-concentrations, with a hard target at a range of 3 km and atmospheric backscatter from a range of ~450 m. The pulsed signals at 1572 nm are upconverted to 635 nm, and detected by a photomultiplier tube, to test how the upconversion technology performs in a long range detection sys...
متن کاملEffect of Ethylene Oxide Functional Groups in PEBA-CNT Membranes on CO2/CH4 Mixed Gas Separation
Poly (ether-block-amide) /poly (ethylene glycol)/ carbon nanotubes mixed matrix membranes have been successfully fabricated using solvent evaporation method to determine the effect of ethylene oxide groups on the performance of produced membranes. The effects of CNTs (2-8 wt%) and PEG (up to 50 wt%)were investigated in both single and mixed gas test setup in different temperature and pressure. ...
متن کاملInvestigation of CO2 and H2O Addition to Natural Gas for Production of Synthesis Gas
General modeling and optimization of syngas production via noncatalytic autothermal partial oxidation of methane are carried out using our developed scientific software which was based on the minimization of total Gibbs energy. In this work, a novel application of the direct search and Newton-Raphson methods was introduced to apply to optimization of a complex chemical reaction. Sensitivity ana...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: GEOCHEMICAL JOURNAL
سال: 1985
ISSN: 0016-7002
DOI: 10.2343/geochemj.19.171