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
Isotopic composition of commercially available uranium chemicals and elemental analysis standards
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Radioanalytical and Nuclear Chemistry"
DOI: 10.1007/s10967-018-5740-5
Abstract: Reference information on isotopic composition of various uranium materials, determined with high accuracy and precision, is of essential value for nuclear safeguards and nuclear forensics. In addition, an accurate knowledge of the isotopic composition is… read more here.
Keywords: elemental analysis; uranium chemicals; composition; isotopic composition ... See more keywords
Dependence of epiphytic community on autochthonous and allochthonous sources of nitrogen in three forest habitats of southern Vietnam
Sign Up to like & getrecommendations! Published in 2019 at "Plant and Soil"
DOI: 10.1007/s11104-019-04252-1
Abstract: Experimental data concerning possible trophic relationships between phorophytes and epiphytes are contradictory. Several studies have indirectly shown that epiphytes affect the nitrogen cycle in tropical forests, but the degree of interaction between nutrition cycles of… read more here.
Keywords: nitrogen; dependence; habitats southern; southern vietnam ... See more keywords
Isotopic composition of precipitation in Poland: a 44-year record
Sign Up to like & getrecommendations! Published in 2019 at "Acta Geophysica"
DOI: 10.1007/s11600-019-00367-2
Abstract: Isotopic composition of precipitation (2H/1H and 18O/16O isotope ratios, tritium content) is nowadays widely used in numerous applications of environmental isotopes—most notably in hydrology, climatology and biogeochemistry. Here we present a long record (44 years)… read more here.
Keywords: isotope; composition precipitation; precipitation; composition ... See more keywords
Development of an innovative external (in air) Particle Induced Gamma-ray Emission method for rapid non-destructive determination of isotopic composition of boron in "As received" boron based ceramic neutron absorbers.
Sign Up to like & getrecommendations! Published in 2022 at "Analytica chimica acta"
DOI: 10.1016/j.aca.2022.339686
Abstract: Boron is an important element in nuclear reactor technology due to its high neutron absorption cross section of 10B isotope. Isotopic composition of B (IC, 10B/11B atom ratio) determination in finished neutron absorbers is a… read more here.
Keywords: non destructive; isotopic composition; neutron absorbers; method ... See more keywords
In-situ monitoring of soil water isotopic composition for partitioning of evapotranspiration during one growing season of sugar beet (Beta vulgaris)
Sign Up to like & getrecommendations! Published in 2019 at "Agricultural and Forest Meteorology"
DOI: 10.1016/j.agrformet.2018.12.002
Abstract: Abstract Field-based quantitative observations of hydrological feedbacks of terrestrial vegetation to the atmosphere are crucial for improving land-surface model parametrizations. This is especially true in the specific context of partitioning of evapotranspiration (ET) into soil… read more here.
Keywords: isotopic composition; water; soil water;
Spatial and temporal patterns of nitrogen isotopic composition of ammonia at U.S. ammonia monitoring network sites
Sign Up to like & getrecommendations! Published in 2017 at "Atmospheric Environment"
DOI: 10.1016/j.atmosenv.2016.11.039
Abstract: Abstract Ammonia (NH3) emissions and ammonium (NH4+) deposition can have harmful effects on the environment and human health but remain generally unregulated in the U.S. PM2.5 regulations require that an area not exceed an annual… read more here.
Keywords: nh3 values; ammonia; nitrogen isotopic; isotopic composition ... See more keywords
The stable strontium isotopic composition of ocean island basalts, mid-ocean ridge basalts, and komatiites
Sign Up to like & getrecommendations! Published in 2018 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2018.03.030
Abstract: Ocean island basalts Mid-ocean ridge basalts Komatiites Kilauea Iki Bulk silicate earth A B S T R A C T The radiogenic 87 Rb-87 Sr system has been widely applied to the study of geological… read more here.
Keywords: ocean ridge; ridge basalts; mid ocean; isotopic composition ... See more keywords
The isotopic composition of meteoric water along altitudinal transects in the Tian Shan of Central Asia
Sign Up to like & getrecommendations! Published in 2019 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2019.03.032
Abstract: Abstract The Tian Shan in Central Asia are a unique mountain range in that they are in the world's most continental location. Seasonal precipitation in the northern Tian Shan is segregated into distinct elevation bands… read more here.
Keywords: tian central; water; central asia; isotopic composition ... See more keywords
Evaluating zircon initial Hf isotopic composition using a combined SIMS–MC-LASS-ICP-MS approach: A case study from the Coompana Province in South Australia
Sign Up to like & getrecommendations! Published in 2020 at "Chemical Geology"
DOI: 10.1016/j.chemgeo.2020.119870
Abstract: Abstract The accessory mineral zircon is the most widely used geological timekeeper and tracer of crustal growth processes. Specifically, U–Pb isotopes in zircon offer a means to accurately determine the timing of magmatic events and… read more here.
Keywords: zircon; lass icp; province; isotopic composition ... See more keywords
Isotopic composition of natural and synthetic chlorate (δ18O, Δ17O, δ37Cl, 36Cl/Cl): Methods and initial results.
Sign Up to like & getrecommendations! Published in 2021 at "Chemosphere"
DOI: 10.1016/j.chemosphere.2021.129586
Abstract: Natural chlorate (ClO3-) is widely distributed in terrestrial and extraterrestrial environments. To improve understanding of the origins and distribution of ClO3-, we developed and tested methods to determine the multi-dimensional isotopic compositions (δ18O, Δ17O, δ37Cl,… read more here.
Keywords: chlorate; 17o 37cl; clo3; isotopic composition ... See more keywords