Triple oxygen isotopes of cherts through time
Sign Up to like & getrecommendations! Published in 2020 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2020.119789
Abstract: Abstract It has long been recognized that the stable oxygen isotope 18O/16O ratios of chemical sediments show a systematic decrease with increasing age. This continuous, 3.8 Ga long secular trend has been attributed to 80 °C hot… read more here.
Keywords: 18o 16o; oxygen isotope; triple oxygen;
High-precision analysis of 182W/184W and 183W/184W by negative thermal ionization mass spectrometry: Per-integration oxide corrections using measured 18O/16O.
Sign Up to like & getrecommendations! Published in 2017 at "International journal of mass spectrometry"
DOI: 10.1016/j.ijms.2017.01.002
Abstract: Here we describe a new analytical technique for the high-precision measurement of 182W/184W and 183W/184W using negative thermal ionization mass spectrometry (N-TIMS). We improve on the recently reported method of Trinquier et al. (2016), which… read more here.
Keywords: 18o 16o; mass; 183w 184w; 182w 184w ... See more keywords
The use of Nafion membranes to measure 2H/1H and 18O/16O isotopic ratios in water
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Membrane Science"
DOI: 10.1016/j.memsci.2018.11.003
Abstract: Abstract The isotopic composition of water (2H/1H and 18O/16O) has been widely used in hydrology, ecology, paleoclimatology and forensic science. However, sampling frequency limits many such studies and there is now a clear need for… read more here.
Keywords: isotopic ratios; water; 18o 16o; 16o isotopic ... See more keywords
Analysis of the Stable Isotope Ratios (18O/16O, 17O/16O and D/H) in Glacier Water by Laser Spectrometry.
Sign Up to like & getrecommendations! Published in 2020 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.9b05679
Abstract: A compact isotope ratio sensor based on laser absorption spectroscopy at 2.7 μm was developed for high precision and simultaneous measurements of the D/H, 18O/16O and 17O/16O isotope ratios in glacier water. Measurements of the… read more here.
Keywords: isotope; 18o 16o; 16o 17o; glacier water ... See more keywords
Factors of 18O/16O fractionation in corundum estimated from the calculation of isotopic shifts on vibration frequencies
Sign Up to like & getrecommendations! Published in 2017 at "Geochemistry International"
DOI: 10.1134/s0016702917060064
Abstract: The β-factors of corundum were estimated on the basis of DFT calculations of vibrational frequency changes due to 16O–18O isotope substitution in a harmonic approximation using an all-electron Gaussian-type basis set and the B3LYP hybrid… read more here.
Keywords: 18o 16o; factors 18o; estimated calculation; 16o fractionation ... See more keywords