Results 31 to 40 of about 4,739 (258)

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

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

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

Improving Precision and Signal/Noise Ratios for MC-ICP-MS

Procedia Earth and Planetary Science, 2015
AbstractHigh precision measurements of isotope ratios are improved by continuous innovations in multi-collector isotope ratio mass spectrometers. Recently, the Thermo Scientific TRITON Plus TIMS and NEPTUNE Plus MC-ICP-MS benefitted from the implementation of Faraday cup current amplifiers with 1013 ohm feedback resistors.
Breton, Thomas, Lloyd, Nicholas S., Trinquier, Anne, Bouman, Claudia, Schwieters, Johannes B.   +4 more
openaire   +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

Ultrafast Thermal Shock Synthesis of CuNiSnLa Medium‐Entropy Metallic Glass for Sustainable Nitrogen Fixation via Plasma‐Coupled Electrocatalysis

Advanced Functional Materials, EarlyView.
This work introduces an ultrafast thermal shock strategy to synthesize a CuNiSnLa medium‐entropy metallic glass (MEMG). The rapid heating and cooling process generates a robust, highly active catalyst for electrocatalytic nitrate reduction to ammonia (NRA).
Hongbo Chen, Peng‐Jun Deng, Yang Liu, Shenglong Huang, Shuo Sun, Haoxuan Li, Jiajia Lu, Panagiotis Tsiakaras   +7 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

Lignin Mimicking Protein Methylation Augments the Efficacy of FOLFOX Chemotherapy by Anchoring Thymidylate Synthase

Advanced Materials, EarlyView.
Lignin‐mimicking protein methylation can enhance the efficacy and mitigate the toxicity of the classic FOLFOX chemotherapy regimen. ABSTRACT FOLFOX has served as the standard chemotherapy regimen for advanced stages, specifically in the treatment of pancreatic, colorectal, and bladder cancers.
Shiyao Song, Yan‐Lai Tang, Xiaoting Liu, Jiayi Zheng, Chong Wu, Tang Li, Junhong Ye, Dianmin Xia, Yong Mei, Jingxuan Ma, Libin Huang, Xuequn Luo, Liheng Chen, Yanlin Qin, Weiling He   +14 more
wiley   +1 more source

Assessment of Low-Level Pu Isotope Ratio Measurements Using Multicollector Inductively Coupled Plasma Mass Spectrometry (MC-ICP-MS/MS) Equipped with a Pre-Mass Filter

Applied Spectroscopy Practica
We present an initial investigation into the performance of a multicollector inductively coupled plasmamass spectrometer equipped with a pre-mass filter (Neoma MC-ICP-MS/MS) for making plutonium (Pu) isotope ratio measurements on solutions containing low
N. Alex Zirakparvar, Benjamin T. Manard, Matthew D. Darnell, Melissa L. Adkisson, Shalina C. Metzger, Brian W. Ticknor, Cole R. Hexel, Daniel R. Dunlap   +7 more
doaj   +1 more source

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

Advanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau, Christian N. Saggau, Stefan Baunack, Thomas Gemming, Yara Abdelaal, Robert Weser, Oliver G. Schmidt, Hagen Schmidt, Andreas Winkler, Mariana Medina‐Sánchez   +9 more
wiley   +1 more source