Then, after fatty acids extraction and derivatization, this signature can be analysed by Gas Chromatography-Combustion-Isotope Ratio Mass Spectrometry (GC-C-IRMS) technique, obtaining the δ13C isotopic values of each fatty acid present in the soil. Data sets having these signatures can be used ...
The past two decades have seen Hg isotopes emerging as a powerful tool for tracing the sources and pathways of Hg in the environment22. Mercury isotopes exhibit mass-dependent fractionation (MDF, represented by δ202Hg) during almost all biotic and abiotic chemical reactions23. In contrast, large...
(130Ba,132Ba,134Ba,135Ba,136Ba,137Ba, and138Ba) and in terms of mass spectrometry behaves quite similarly to its alkaline earth companions Sr and Ca, and thus the isotopes can be measured using either TIMS or MC-ICP-MS. In catchment soils, exchangeable Ba tends to concentrate in deep ...
Rechargeable lithium-ion batteries (LIB) play a key role in the energy transition towards clean energy, powering electric vehicles, storing energy on renewable grids, and helping to cut emissions from transportation and energy sectors. Lithium (Li) demand is estimated to increase considerably in the...
3.2. Mass spectrometry Chromium isotopic analyses were performed with a ThermoFisher Neptune multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS) at the Open University (UK). Solutions were introduced into the mass spectrometer using an Aridus II desolvator system. Detailed descript...
Finally, the outlook for subsequent research in plutonium isotope detection and applications is presented. Keywords: plutonium; pretreatment; purification and separation; mass spectrometry analysis; environmental application1. Introduction As a radioactive isotope, the natural abundance of plutonium isotopes ...
So far, IRMS has been used in combination with “offline” methods that convert H2O into H2 and O2 for mass spectrometry. Meanwhile, “offline” methods such as condensation require a sample with a large water flux typically ranging from tens to hundreds of milliliters of water vapor, which...
The U-Pb ages of eudialyte from nepheline syenite, obtained through laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), were 224 ± 4 Ma [12]. The zircon U-Pb ages from aegirine nepheline syenite, as determined via LA-ICP-MS, were 231.9 ± 3.7 Ma and 229.5 ± ...
NIST SRM 610 was analyzed once every eight analyses to correct the instrumental drift and mass discrimination of the trace element analysis. Errors in individual analyses were cited at the 1σ level, and the weighted mean 206Pb/238U ages were quoted at the 95% confidence level. The adjustment...
Precipitation rates have been calculated to range between 8 and 259 g/m2/day by dividing the difference in Ca mass loss at the leachate source and downstream by the sampling area (see [53] for full details). This is estimated to produce 11–117 kg of CaCO3 per day and 4–42 tons ...