搜索结果: 1-9 共查到“hydrogen isotope”相关记录9条 . 查询时间(0.163 秒)
Interactive evolution of multiple water-ice reservoirs on Mars: Insights from hydrogen isotope compositions
Mars water ice isotope atmospheric escape
2017/4/10
Remote sensing data from orbiter missions have proposed that ground ice may currently exist on Mars, although the
volume is still uncertain. Recent analyses of Martian meteorites have suggested that ...
Sulfur, oxygen, and hydrogen isotope compositions of precipitation in Seoul, South Korea
sulfur isotope oxygen hydrogen pollution precipitation sulfate Korea East Asia
2017/4/11
To evaluate the source of sulfur and the extent of seasonal and local characteristics in Seoul’s precipitation chemistry,
we measured sulfur, oxygen, and hydrogen isotopic ratios of precipitation. Th...
A consistent molecular hydrogen isotope chemistry scheme based on an independent bond approximation
molecular hydrogen isotope chemistry scheme independent bond approximation
2009/11/19
The isotopic composition of molecular hydrogen (H2) produced by photochemical oxidation of methane (CH4) and Volatile Organic Compounds (VOCs) is a key quantity in the global isotope budget of (H2). T...
Hydrogen isotope fractionation in the photolysis of formaldehyde
Hydrogen isotope fractionation in the photolysis of formaldehyde
2008/10/31
Experiments investigating the isotopic fractionation in the formation of H2 by the photolysis of CH2O under tropospheric conditions are reported and discussed. The deuterium (D) depletion in the H2 pr...
Hydrogen isotope ratios of terrigenous n-alkanes in lacustrine surface sediment of the Tibetan Plateau record the precipitation signal
n-alkanes lacustrine sediment terrestrial origin hydrogen isotope ratio precipitation climate
2017/8/10
Hydrogen isotope ratios were measured on terrigenous alkanes (n-C25 to n-C31) extracted from recent lake surface sediments from the climatically and environmentally distinct basins Qiangyong Glacier L...
D-H fractionation in Sporomusa ORIGINAL ARTICLE Blackwell Publishing, Ltd. Hydrogen isotope fractionation during H2 /CO2 acetogenesis: hydrogen utilization efficiency and the origin of lipid-bound hydrogen
ORIGINAL ARTICLE D-H fractionation
2014/4/8
Hydrogen metabolism was studied in the anaerobic bacterium, Sporomusa sp. strain DMG 58, by measuring
natural abundance levels of deuterium in H2
, H2O, and individual fatty acids during acetogenic ...
Hydrogen isotope fractionation in lipids of the methane-oxidizing bacterium Methylococcus capsulatus
Hydrogen isotope fractionation methane-oxidizing bacterium
2014/4/8
Hydrogen isotopic compositions of individual lipids from Methylococcus capsulatus, an aerobic,
methane-oxidizing bacterium, were analyzed by hydrogen isotope-ratio-monitoring gas chromatography–mass
...
Correction of H3 + Contributions in Hydrogen Isotope Ratio Monitoring Mass Spectrometry
Hydrogen Isotope Ratio Monitoring Mass Correction
2014/4/8
Two fundamentally different approaches, termed “pointwise” and “peakwise,” are currently used to correct
hydrogen isotope ratio monitoring data for the presence
of H3
+
ion contributions. Consider...
Determination of the H3 Factor in Hydrogen Isotope Ratio Monitoring Mass Spectrometry
Hydrogen Isotope Ratio Monitoring Mass Spectrometry
2014/4/8
The H3 factor, K, is a parameter required in highprecision, mass spectrometric analyses of hydrogen isotopic abundances. When H2 is used as the sample gas,
R* ) R - Ki2, where R* is the true HD/H2 ra...