Results 41 to 50 of about 2,088,465 (288)

Online preconcentration ICP-MS analysis of rare earth elements in seawater [PDF]

, 2012
The rare earth elements (REEs) with their systematically varying properties are powerful tracers of continental inputs, particle scavenging intensity and the oxidation state of seawater.
Stichel, Torben, Haley, Brian, Zieringer, Moritz, Hathorne, Ed C., Grasse, Patricia, Frank, Martin   +5 more
core   +1 more source

In Situ Ti Isotopic Measurements by Laser Ablation MC-ICP-MS

Terrestrial, Atmospheric and Oceanic Sciences, 2009
We have been developing Laser Ablation Multi-Collector Inductively Coupled Plasma Mass Spectrometry (MC-ICP-MS) technique to measure titanium isotopic composition in situ. A principal aim of this work is to search for isotopic heterogeneities larger than
Hsin-Wei Chen, Ty phoon Lee, Der-Chuen Lee, Yoshiyuki Iizuka   +3 more
doaj   +1 more source

Single-Stage Extraction Technique for Ce Stable Isotopes and Measurement by MC-ICP-MS

, 2021
The separation of Ce from other rare earth elements has not been well established because of their similar geochemical properties. In this study, we report a single-stage extraction technique to purify Ce from natural samples with Eichrom DGA resin. This
Xin Li (51274), Zhian Bao, Zhaofeng Zhang (574897), Kaiyun Chen (364164), Xin Li, Yufei Liu, Zhian Bao (8070353), Kaiyun Chen, Chunhui Li, Fang Liu, Zhaofeng Zhang, Chunhui Li (501186), Yajun An (7486627), Yajun An, Fang Liu (13271), Yufei Liu (796612)   +15 more
core   +1 more source

Triple Isotope Fractionation Exponents of Elements Measured by MC-ICP-MS—An Example of Mg [PDF]

Analytical Chemistry, 2019
In most chemical reactions, stable isotopes are fractionated in a mass-dependent manner, yielding correlated isotope ratios in elements with three or more stable isotopes. The proportionality between isotope ratios is set by the triple isotope fractionation exponent θ that can be determined precisely for, e.g., sulfur and oxygen by IRMS, but not for ...
Michael Tatzel, Jochen Vogl, Martin Rosner, Michael J. Henehan, Thomas Tütken   +4 more
openaire   +5 more sources

Simultaneous in situ determination of U‐Pb and Sm‐Nd isotopes in monazite by laser ablation ICP‐MS

Geochemistry, Geophysics, Geosystems, 2014
Results are presented for in situ simultaneous determination of U‐Pb and Sm‐Nd isotopes in monazite using the Laser Ablation Split‐Stream (LASS) method. This method uses a laser ablation system coupled to a magnetic‐sector inductively coupled plasma mass
Dylan J. Goudie, Christopher M. Fisher, John M. Hanchar, James L. Crowley, John C. Ayers   +4 more
doaj   +1 more source

Determination of Silicon Isotopic Compositions of Rock and Soil Reference Materials by MC-ICP-MS

Yankuang ceshi, 2023
BACKGROUND With the analytical technique development, the precision of Si isotopes analysis increases rapidly.Silicon isotopes are widely used in geochemistry, cosmochemistry, environmental chemistry and so on, and can be used to trace the circulation of
YANG Lin, SHI Zhen, YU Huimin, HUANG Fang   +3 more
doaj   +1 more source

High‐precision isotopic characterization of USGS reference materials by TIMS and MC‐ICP‐MS [PDF]

Geochemistry, Geophysics, Geosystems, 2006
The Pacific Centre for Isotopic and Geochemical Research (PCIGR) at the University of British Columbia has undertaken a systematic analysis of the isotopic (Sr, Nd, and Pb) compositions and concentrations of a broad compositional range of U.S. Geological Survey (USGS) reference materials, including basalt (BCR‐1, 2; BHVO‐1, 2), andesite (AGV‐1, 2 ...
Weis, Dominique, Kieffer, Bruno, Maerschalk, Claude Michel, Barling, Jane, De Jong, Jeroen, Williams, Gwen A., Hanano, Diane, Pretorius, Wilma, Mattielli, Nadine, Scoates, James, Goolaerts, Arnaud, Friedman, R.M, Mahoney, J.B   +12 more
openaire   +3 more sources

Direct measurement of 44Ca/40Ca ratios by MC-ICP-MS using the cool plasma technique [PDF]

, 2004
Here, we present a new technique for the direct measurement of 44Ca/40Ca isotope ratios on a Multicollector Inductively Coupled Plasma Mass Spectrometer (MC–ICP–MS, AXIOM) using the “cool plasma” technique.
Gussone, N., Nägler, Th. F., Fietzke, J, Bock, Barbara, Dullo, C, Spero, H.J, Gussone, Nikolaus, Bijma, J., Eisenhauer, A, Liebetrau, V, Nägler, Thomas F., Eisenhauer, A., Liebetrau, V., Dullo, Wolf-Christian, Dullo, C., Nägler, Thomas, Spero, H. J., Bock, B, Liebetrau, Volker, Bijma, J, Fietzke, J., Bijma, Jelle, Eisenhauer, Anton, Fietzke, Jan, Bock, B., Gussone, N   +25 more
core   +2 more sources

CO2‐to‐CO Conversion in a Gas‐Fed, Zero‐Gap, PEM Electrolyzer Enabled by Polycations and Nitrogen‐Doped Carbon‐Supported Cobalt Nanoparticles

Advanced Functional Materials, EarlyView.
A gas‐fed, zero‐gap, PEM CO2 electrolyzer is realized by incorporating PDDA+ ions onto the carbonaceous Co/N‐C electrocatalyst, with gaseous H2 and CO2 fed into the anode and cathode, respectively. Operating without an aqueous electrolyte, the system sustains a peak FECO of 65.1% at 100 mA cm−2. ABSTRACT Electrochemical carbon dioxide reduction (ECO2R)
Yuen Leong Chow, Hsi‐Wen Wu, Aimin Li, Yalou Guo, Duhong Chen, Jie Zhang, Paul A. Webley   +6 more
wiley   +1 more source

Use of Lead Isotopic Ratios as Geographical Tracer for Lambrusco PDO Wines

Molecules, 2020
In this study, the lead isotope signature was tested with the aim to verify its potential as geographic tracer for wine production and particularly for the Lambrusco PDO wines of the province of Modena (Italy).
Lisa Lancellotti, Simona Sighinolfi, Andrea Marchetti, Lorenzo Tassi   +3 more
doaj   +1 more source