Results 11 to 20 of about 31,311 (333)

Strontium Isotope as Tracers of Groundwater Contamination [PDF]

open access: yesProcedia Earth and Planetary Science, 2017
Groundwater flowing under a municipal solid waste landfill has been studied to identify potential contamination phenomenon and to test strontium isotopic composition as a natural tracer of contamination. The study was carried on in June 2014 in central Italy.
NIGRO, ANGELA   +2 more
openaire   +5 more sources

Metals and metal isotopes incorporation in insect wings: Implications for geolocation and pollution exposure

open access: yesFrontiers in Ecology and Evolution, 2023
Anthropogenic activities are exposing insects to elevated levels of toxic metals and are altering the bioavailability of essential metals. Metals and metal isotopes have also become promising tools for the geolocation of migratory insects.
Megan S. Reich   +10 more
doaj   +1 more source

The determination of the isotopic composition of strontium

open access: yesInternational Journal of Mass Spectrometry, 2022
If the process of instrumental isotopic fractionation in thermal-ionization mass spectrometry is modeled in terms of Rayleigh's distillation, the values of the isotopic ratios of strontium in a sample material can be calculated by distributions of measured ratios obtained by instrumental runs in which the process of isotopic fractionation in the sample
Cavazzini G, Roccato D, Fasson A
openaire   +3 more sources

Identifying nesting grounds for juvenile migratory birds with dual isotope: an initial test using North American raptors

open access: yesEcosphere, 2021
Understanding seasonal mobility, population connectivity, and site fidelity is critical for managing and preserving migratory species. We investigated the potential of coupling strontium (87Sr/86Sr) and hydrogen (δ2H) isotopes in feathers for ...
Brooke E. Crowley   +3 more
doaj   +1 more source

Chemostratigraphy of Neoproterozoic carbonates: implications for 'blind dating' [PDF]

open access: yes, 2001
The delta C-13(carb) and Sr-87/Sr-86 secular variations in Neoproteozoic seawater have been used for the purpose of 'isotope stratigraphy' but there are a number of problems that can preclude its routine use.
Aharon P.   +55 more
core   +1 more source

Application of Eichrom Sr Resin to the Separation and Enrichment of Lead and Strontium in Uranium Ore Concentrates

open access: yesYankuang ceshi, 2019
BACKGROUND The traceability study of uranium ore concentrates plays an important role in nuclear forensics. By measuring the abundance ratios of lead and stontium isotopes, the results can provide some geographical indication information for traceability.
XU Zhuo   +5 more
doaj   +1 more source

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 229-246., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson   +2 more
wiley  

+10 more sources

Evidence of hydrological control of Sr behavior in stream water (Strengbach catchment, Vosges mountains, France) [PDF]

open access: yes, 2002
Strontium and particularly 87Sr/86Sr ratios in stream water have often been used to calculate weathering rates in catchments. Nevertheless, in the literature, discharge variation effects on the geochemical behavior of Sr are often omitted or considered ...
Amiotte-Suchet   +48 more
core   +2 more sources

Machine-learning-based automated loading of strontium isotopes into magneto-optical trap

open access: yesAIP Advances, 2023
We implemented optimization techniques of machine learning (ML) to obtain the mutually exclusive sets of experimental parameters that maximize the number of strontium atoms of different isotopes (88Sr, 86Sr, and 87Sr) in a magneto-optical trap (MOT ...
Korak Biswas   +4 more
doaj   +1 more source

Reconstructing Pleistocene Australian herbivore megafauna diet using calcium and strontium isotopes

open access: yesRoyal Society Open Science, 2023
Isotopes in fossil tooth enamel provide robust tools for reconstructing food webs, which have been understudied in Australian megafauna. To delineate the isotopic composition of primary consumers and understand dietary behaviour at the base of the food ...
Dafne Koutamanis   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy