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Hydrogen diffusion in the apatite-water system: Fluorapatite parallel to the c-axis
apatite hydrogen diffusion H-D exchange H2O SIMS
2017/4/10
Many studies in the past decade have sought to explore the origin and evolution of water in planetary bodies based on
the hydrogen isotopic compositions of apatite. However, no investigation has stud...
Dissolved CO2 in natural waters: development of an automated monitoring system and first application to Stromboli volcano (Italy)
Gas–water interaction Dissolved CO2 Fluid geochemistry Geochemical monitoring
2015/8/27
The study of geochemical parameters applied to natural systems has provided improved knowledge of geochemical mechanisms of gas/rock dissolution in natural waters that are linked to gas–water and/or w...
Development and application of the WRFPLUS-Chem online chemistry adjoint and WRFDA-Chem assimilation system
Development and application chemistry adjoint
2015/8/6
Here we present the online meteorology and
chemistry adjoint and tangent linear model, WRFPLUSChem (Weather Research and Forecasting plus chemistry),
which incorporates modules to treat boundary lay...
The 1-way on-line coupled atmospheric chemistry model system MECO(n) – Part 2: On-line coupling with the Multi-Model-Driver (MMD)
chemistry model system chemistry
2014/12/11
A new, highly flexible model system for the seamless dynamical downscaling of meteorological and chemical processes from the global to the meso-γ scale is preber of limited-area model instances ...
Determination of Hf isotope ratios in zircon using multiple collector-inductively coupled plasma mass spectrometry equipped with laser ablation and desolvating nebulizer dual sample introduction system
193 nm excimer Hf isotope laser ablation MC-ICPMS zircon
2017/4/11
We propose an analytical protocol for the accurate in situ determination of 176Hf/177Hf isotope ratios in zircon crystals
by a 193 nm ultraviolet excimer laser ablation (193ExLA) multiple-collector i...
Noble gas mass spectrometry with a compressor driven recycling system for improved sensitivity
noble gas geochemistry compressor turbo molecular pump
2017/8/9
In order to increase the sensitivity of static-mode noble gas mass spectroscopic analysis, we have developed and tested a gas re-circulation system, which uses a commercially available turbo molecular...
Closed-system programmed-temperature pyrolysis on n-octadecane: Implications for the conversion of oil to gas
n-octadecane pyrolysis experiment gaseous hydrocarbon stable carbon isotope kinetic
2017/8/10
The aim of this work is to determine the molecular and stable carbon isotope compositions of pyrolysates from normal octadecane and, then, to study methane generation kinetic and carbon isotope fracti...
New preconcentration technique of Zr, Nb, Mo, Hf, Ta and W employing coprecipitation with Ti compounds: Its application to Lu-Hf system and sequential Pb-Sr-Nd-Sm separation
coprecipitation Ti compounds Lu-Hf Pb-Sr-Nd isotope analysis preconcentration
2017/8/10
A new preconcentration technique of Zr, Nb, Mo, Hf, Ta and W has been invented employing coprecipiation with Ti compounds. Silicate samples were digested by HF with addition of Ti. Subsequent drying w...
Stable isotopic detection of ammonium and nitrate assimilation by phytoplankton in the Waquoit Bay estuarine system
Stable isotopic detection ammonium and nitrate assimilation phytoplankton Waquoit Bay estuarine system
2014/4/22
We measured concentration and δ15N of chlorophyll a (Chl a), NO3-, and NH4+ along a salinity gradient in Childs River, Massachusetts, in winter, spring, and summer. We used the δ15N of Chl a as a prox...