Source identification of n-alkanes and isoprenoids using diagnostic ratios and carbon isotopic composition on crude oils and surface waters from the Gulf of Mexico
Sign Up to like & getrecommendations! Published in 2021 at "Environmental Monitoring and Assessment"
DOI: 10.1007/s10661-021-09440-0
Abstract: Diagnostic ratios and compound-specific isotopic analysis (CSIA) are two tools that can help identify and differentiate the petrogenic and biogenic sources of hydrocarbons found in environmental samples. The present study aims to evaluate the concentration… read more here.
Keywords: gulf mexico; diagnostic ratios; carbon isotopic; isotopic composition ... See more keywords
Petrography and stable oxygen and carbon isotopic composition of the Antalo Limestone, Mekelle Basin, Northern Ethiopia: implications for marine environment and deep-burial diagenesis
Sign Up to like & getrecommendations! Published in 2020 at "Carbonates and Evaporites"
DOI: 10.1007/s13146-020-00659-5
Abstract: The depositional environment of the Antalo Limestone was previously interpreted from regional field-based studies and microfacies. However, stable oxygen and carbon isotopes are also invaluable proxies of paleo-environmental conditions, depositional, and diagenetic environments. Hence, the… read more here.
Keywords: deep burial; carbon; carbon isotopic; stable oxygen ... See more keywords
Methanogenesis in the Eocene Tharad lignite deposits of Sanchor Sub-Basin, Gujarat, India: Insights from gas molecular ratio and stable carbon isotopic compositions
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Natural Gas Science and Engineering"
DOI: 10.1016/j.jngse.2021.103970
Abstract: Abstract The present study investigates the molecular ratio and stable carbon isotopic compositions of gas samples from the Lower to Middle Eocene lignite deposits of the Lower to Middle Tharad Formation in the Sanchor Sub-Basin,… read more here.
Keywords: gas; molecular ratio; stable carbon; carbon ... See more keywords
Carbon isotopic composition of leaf wax n-alkanes in mangrove plants along a latitudinal gradient in Brazil
Sign Up to like & getrecommendations! Published in 2021 at "Organic Geochemistry"
DOI: 10.1016/j.orggeochem.2021.104299
Abstract: Abstract The carbon isotopic composition (δ13C) of selected specific biomarkers provides important information on the relationship between plant species and the environment in which they developed. Here we present baseline data of δ13C values of… read more here.
Keywords: leaf wax; isotopic composition; isotopic; carbon ... See more keywords
Geochemical characteristics comparison of primary gas with producing gas and its significance for depleted ethane carbon isotopic values in the Southeastern gas field of the Ordos Basin, China
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2021.109002
Abstract: Abstract To identify the reasons for more depleted ethane carbon isotopic value (MD-δ13C2) in the Southeastern gas field (SEGF), fluid inclusions samples from northern and the SEGF were collected. Homogenization temperature and salinity of fluid… read more here.
Keywords: gas; ethane carbon; isotopic values; carbon isotopic ... See more keywords
Carbon isotopic characterisation and oxidation of UK landfill methane emissions by atmospheric measurements.
Sign Up to like & getrecommendations! Published in 2021 at "Waste management"
DOI: 10.1016/j.wasman.2021.07.012
Abstract: Biological oxidation of methane in landfill cover material can be calculated from the carbon isotopic signature (δ13CCH4) of emitted CH4. Enhanced microbial consumption of methane in the aerobic portion of the landfill cover is indicated… read more here.
Keywords: carbon isotopic; oxidation; methane emissions; methane ... See more keywords
Compound-Specific Carbon Isotopic Composition of Ethanol in Brazil and US Vehicle Emissions and Wet Deposition.
Sign Up to like & getrecommendations! Published in 2019 at "Environmental science & technology"
DOI: 10.1021/acs.est.8b05325
Abstract: Global atmospheric ethanol budget models include large uncertainties in the magnitude of ethanol emission sources and sinks. To apply stable isotope techniques to constrain ethanol emission sources, a headspace solid phase microextraction gas chromatograph-combustion-isotope ratio… read more here.
Keywords: wet deposition; carbon; carbon isotopic; isotope ... See more keywords
Carbon Isotopic Measurements of Nanotubes to Differentiate Carbon Sources
Sign Up to like & getrecommendations! Published in 2019 at "ACS Omega"
DOI: 10.1021/acsomega.9b03254
Abstract: Stable carbon isotope (δ(13C)) analysis can provide information concerning the starting materials and the production process of a material. Carbon nanotubes (CNTs) are produced using a variety of starting materials, catalysts, and production methods. The… read more here.
Keywords: carbon; carbon isotopic; starting materials; carbon sources ... See more keywords
Effect of Charring on Rice Grain Morphology and Carbon Isotopic Composition
Sign Up to like & getrecommendations! Published in 2020 at "Current Science"
DOI: 10.18520/cs/v118/i7/1052-1059
Abstract: Rice cultivation over Asia has several thousand years of history. Adequate water availability is a prime factor for the cultivation of rice in this region. The remains of rice at the archaeological sites, therefore, provide… read more here.
Keywords: rice; isotopic composition; isotopic; carbon isotopic ... See more keywords