Evaluating the effects of diagenesis on the δ13C and δ18O compositions of carbonates in a mud-rich depositional environment: A case study from the Midland Basin, USA
Sign Up to like & getrecommendations! Published in 2019 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2019.06.021
Abstract: Abstract Marine carbonate δ13C and δ18O values are commonly utilized as indicators of past climate and are thought to record primary seawater conditions. However, these minerals can be altered following deposition and burial, overprinting the… read more here.
Keywords: rich depositional; 13c 18o; carbonates mud; midland basin ... See more keywords
Kinetic effects during the experimental transition of aragonite to calcite in aqueous solution: Insights from clumped and oxygen isotope signatures
Sign Up to like & getrecommendations! Published in 2019 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2019.01.012
Abstract: Abstract Paleoenvironmental reconstructions based on the clumped isotopes (Δ47) and traditional isotope (δ13C or δ18O) techniques are often problematic for carbonates that have undergone diagenetic alteration. One of the most common types of diagenesis is… read more here.
Keywords: isotope; 13c 18o; oxygen isotope; aragonite calcite ... See more keywords
Real-time monitoring of 13C and 18O-isotopes of human breath CO2 using a mid-infrared hollow waveguide gas sensor.
Sign Up to like & getrecommendations! Published in 2020 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.0c01586
Abstract: Real-time measuring CO2 isotopes (13CO2, 12CO2, and 18OC16O) in exhaled breath using a mid-infrared hollow waveguide (HWG) gas sensor incorporating a 2.73 μm DFB laser was proposed and demonstrated first time based on calibration-free wavelength… read more here.
Keywords: breath; real time; time; gas ... See more keywords
Calibration Strategies for FT-IR and Other Isotope Ratio Infrared Spectrometer Instruments for Accurate δ13C and δ18O Measurements of CO2 in Air.
Sign Up to like & getrecommendations! Published in 2017 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.6b05063
Abstract: This paper describes calibration strategies in laboratory conditions that can be applied to ensure accurate measurements of the isotopic composition of the CO2 in ultradry air, expressed as δ13C and δ18O on the VPDB scale,… read more here.
Keywords: calibration strategies; co2 air; air; 13c 18o ... See more keywords
Development and characterization of a new in-house reference material for stable carbon and oxygen isotopes analyses
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Analytical Atomic Spectrometry"
DOI: 10.1039/d1ja00030f
Abstract: The precision and accuracy of an isotope ratio mass spectrometry (IRMS) laboratory and the quality of its scientific output directly depend on the quality of the reference materials used for calibration. However, the specification and… read more here.
Keywords: shp2l; 13c 18o; reference; reference material ... See more keywords
Hypostratotype of the Bashkirian Stage of the Carboniferous System (Askyn River, Bashkortostan): Lithology, Isotopes (δ13C, δ18O), and Carbonate Depositional Settings
Sign Up to like & getrecommendations! Published in 2018 at "Stratigraphy and Geological Correlation"
DOI: 10.1134/s0869593818060047
Abstract: Abstract —The isotopic composition and lithology of the hypostratotype of the Bashkirian Stage (Pennsylvanian) in the Askyn River section (Bashkortostan, western slope of the South Urals) are studied. The isotopic study (δ13C, δ18O) was conducted… read more here.
Keywords: askyn river; bashkirian stage; hypostratotype bashkirian; 13c 18o ... See more keywords