Results 31 to 40 of about 1,109 (150)

Review of Analytical Lithium Detection and Quantification Methods Along the Lithium Value Chain

Applied Research, Volume 4, Issue 6, December 2025.
This article reviews a selection of suitable state‐of‐the‐art analytical methods for different scales of spatial resolution and detection of lithium for a variety of lithium‐bearing materials along the lithium value chain. The various materials differ greatly in terms of their lithium content by more than 5 orders of magnitude and also vary in their ...
Nico Kropp, Ralf Halama, Ralf B. Wehrspohn   +2 more
wiley   +1 more source

Experimental cosmochemistry in the Space Station [PDF]

, 1987
The purpose of two workshops was to identify and discuss experiments in cosmochemistry that cannot be conducted under the conditions available in terrestrial laboratories, but may be carried out successfully in the proposed Space Station.
Duba, AL
core  

Low‐Frequency Raman Spectra of Natural Pyrrhotites: Polarization Dependence for Its Lattice Modes

Journal of Raman Spectroscopy, Volume 56, Issue 12, Page 1529-1536, December 2025.
The present study found low‐wavenumber Raman modes of pyrrhotite Fe1‐xS at ~68, ~87, ~117, and ~230 cm−1 for the first time, thanks to a lab‐built Raman spectrometer, in which the optical path of the incident laser was purged by Ar gas. The sufficiently high signal‐to‐noise and signal‐to‐base ratios enabled us to obtain the polarization dependence of ...
Shu‐hei Urashima, Mana Kito, Shiori Nakajima, Kenichi Oguchi, Aruto Kashima, Hiroharu Yui   +5 more
wiley   +1 more source

Comparison of Two Methods for Determination of Rhenium and Platinum‐Group Elements in Meteorites Using On‐Line and Off‐Line Matrix Separation Modes

Geostandards and Geoanalytical Research, Volume 49, Issue 4, Page 737-750, December 2025.
Key Points PEEK tubing has been observed to adsorb Pd and Pt ions, resulting in significantly reduced recoveries of Pd and Pt elements. HPA‐S provides a more effective dissolution for meteorite samples than Carius tube digestion, resulting in higher mass fractions for PGE.
Yuling Zeng, Guiqin Wang, Thomas C. Meisel   +2 more
wiley   +1 more source

Cadmium stable isotope cosmochemistry [PDF]

, 2008
Cadmium stable isotope compositions are reported for a comprehensive suite of carbonaceous, ordinary, enstatite, and Rumuruti chondrites as well as achondrites and lunar samples (soils, breccias, pristine anorthosite).
Mezger, Klaus, Münker, Carsten, Bischoff, Addi, Rehkämper, Mark, Wombacher, Frank   +4 more
core   +2 more sources

Iron Isotope Ratios of IAEA B5 Basalt and Whole‐Rock Reference Materials (JB‐2, BHVO‐2, AGV‐1, BE‐N and RGM‐1) Determined by Multi‐Collector Inductively Coupled Plasma‐Mass Spectrometry

Geostandards and Geoanalytical Research, Volume 49, Issue 4, Page 901-914, December 2025.
Key Points An Fe isotope measurement method using MC‐ICP‐MS was developed, improving data quality and interlaboratory data comparability. Fe isotope ratios were measured for five geological reference materials and new δ56Fe and δ57Fe values proposed for IAEA‐B5.
Paolo Di Giuseppe, Simone Vezzoni, Stefano Iannini Lelarge, Andrea Rielli, Samuele Agostini, Andrea Dini   +5 more
wiley   +1 more source

Hardness determination of bio-ceramics using laser-induced breakdown spectroscopy. [PDF]

, 2011
Laser-Induced Breakdown Spectroscopy (LIBS) was applied to the analysis of bioceramic samples. The relationship between sample hardness and LIBS plasma properties was investigated, with comparison to conventional Vickers hardness measurements.
Moser, D., Pilkington, R.D., Cowpe, J.S., R.D. Moorehead, Crofts, G, S.H. Kilcoyne, Kilcoyne, SH, S. Karthikeyan, Crofts, G., J.S. Astin, Astin, JS, Astin, J.S., Cowpe, JS, Kilcoyne, Susan H., D. Moser, Karthikeyan, S, J.S. Cowpe, G. Crofts, Pilkington, RD, Moser, D, Moorehead, R.D., Moorehead, RD, Karthikeyan, S., R.D. Pilkington   +23 more
core   +1 more source

Moderate Thermal Conductivity of Fe‐Ni‐Si Alloy at Earth's Core Conditions: Implications for Core Thermal Evolution and Geodynamo

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Earth's presently‐active magnetic field is thought to be generated by geodynamo via convection of liquid outer core, primarily composed of Fe alloyed with Ni and light elements, for example, Si. Core thermal conductivity critically controls its thermal evolution, dynamics, and available energy (thermal vs. compositional) powering the geodynamo
Wen‐Pin Hsieh, Yi‐Ting Chiang, Frédéric Deschamps, Chao‐Chih Chen, Jen‐Wei Chang, Daijo Ikuta, Eiji Ohtani   +6 more
wiley   +1 more source

Aplications of PGE radioisotope systems in geo-and cosmochemistry

, 2008
The platinum-group elements contain three radioisotope systems that have been used in many and varied ways in geo- and cosmochemistry. Unique chronological applications include dating the formation of such diverse materials as sulfides, gold, organic ...
Shirey, Steven B., Schonbachler, Maria, Carlson, Richard W.   +2 more
core   +1 more source

Sulfide–metal assemblages on CR2 chondrule rims: Products of nebular fission–sulfidization and parent body oxidation–serpentinization

Meteoritics &Planetary Science, Volume 60, Issue 11, Page 2655-2675, November 2025.
Abstract We conducted a scanning electron microscopy (SEM) and transmission electron microscopy (TEM) study of sulfide–metal assemblages (SMAs) in minimally to moderately altered CR2 chondrites. The assemblages occur on chondrule rims and consist of kamacite cores rimmed by pyrrhotite.
S. A. Singerling, A. J. Brearley
wiley   +1 more source