Results 21 to 30 of about 4,739 (258)
View, 2021 All elements with two or more isotopes show natural variation in their isotopic composition as a result of the isotope fractionation that accompanies (bio)chemical reactions and (bio)physical processes.
Frank Vanhaecke +1 more
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Solid Earth Sciences, 2021 The Tengshan'ao Sn deposit, located at the Dayishan ore field, Nanling Range, is one of the recently explored deposits in this region. In this study, LA-MC-ICP-MS cassiterite U–Pb and muscovite 40Ar-39Ar isotopic dating analyses for altered granite-type ...
Zunzun Zhang +9 more
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Determination of Copper Isotope Composition of Soil Reference Materials by MC-ICP-MS
Yankuang ceshi, 2021 BACKGROUND In recent years, copper isotopes have been widely applied in supergene environments and biogeochemical processes, acting as novel tracers for soil pollution and biogeochemical cycles during pedogenesis.
LIU Wan, LI Dan-dan, LIU Sheng-ao
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Copper Isotopic Analysis in Geological and Biological Reference Materials by MC‐ICP‐MS [PDF]
Geostandards and Geoanalytical Research, 2020 The characterisation of relative copper isotope amount ratios (δ65Cu) helps constrain a variety of geochemical processes occurring in the geosphere, biosphere and hydrosphere. The accurate and precise determination of δ65Cu in matrix reference materials is crucial in the effort to validate measurement methods.
Sullivan, Kaj +5 more
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Solid Earth Sciences, 2016 Because Pb isotopes can be used for tracing, they are widely used in many disciplines. The detection and analysis of Pb isotopes of bulk samples are usually conducted using thermal ionization mass spectrometer (TIMS) and multiple-collector inductively ...
Honglin Yuan +9 more
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Determination of the isotopic composition of tungsten using MC-ICP-MS
Analytica Chimica Acta, 2019 The processes of planetary accretion or formation of the Earth and other celestial objects can be studied by using the 182Hf-182W chronometer which requires precise measurements of tungsten isotope ratios. Many comparative measurements for the isotopic composition of tungsten have been performed using either thermal ionization mass spectrometry (TIMS ...
Zhang, Rouxi +5 more
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In situ U-Pb Isotope Dating Techniques for Sandstone-type Uranium Deposits
Yankuang ceshi, 2020 BACKGROUND Uranium mineral dating has been difficult to ascertain in mineralization chronology. With the development of in situ U-Pb isotope dating technology, it is possible to directly date ore minerals (uranium minerals).
XIAO Zhi-bin +6 more
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Yankuang ceshi, 2019 BACKGROUND With the development of Multi-collector Thermal Ionization Mass Spectrometry (MC-TIMS) and Multi-collector Inductively Coupled Plasma-Mass Spectrometry (MC-ICP-MS), Cr isotopes had been successfully measured at a high resolution.
SHI Kai +4 more
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Heavy metals and Zn isotope ratios in the snow of the Karabash copper smelting area (Southern Urals, Russia) [PDF]
E3S Web of Conferences, 2019 This work presents the first results of winter fieldworks aimed at the assessment of heavy metal content and Zn isotope composition in the snow cover of a smelting area in South Ural. Twenty one snowpacks were sampled at the end of the winter 2018 in the
Udachin Valery +6 more
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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 +3 more
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