High-Precision Measurement of Molybdenum Isotopic Compositions of Selected Geochemical Reference Materials

2016 ◽  
Vol 40 (3) ◽  
pp. 405-415 ◽  
Author(s):  
Jin Li ◽  
Xiang-kun Zhu ◽  
Suo-han Tang ◽  
Kan Zhang
Keyword(s):  
High Precision ◽  
Reference Materials ◽  
Precision Measurement ◽  
High Precision Measurement ◽  
Isotopic Compositions ◽  
Geochemical Reference Materials

An optimized protocol for high precision measurement of Hg isotopic compositions in samples with low concentrations of Hg using MC-ICP-MS

2018 ◽  
Vol 33 (11) ◽  
pp. 1932-1940 ◽  
Author(s):  
Hongyan Geng ◽  
Runsheng Yin ◽  
Xiangdong Li
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
Direct Determination ◽  
Gas Flows ◽  
High Precision Measurement ◽  
Isotopic Compositions ◽  
Low Concentrations ◽  
Optimized Protocol ◽  
Icp Ms

Optimized gas flows achieved the direct determination of Hg isotopic compositions of 0.1 ng mL−1 solutions.

High-precision measurement of U-Pu-Np-Am concentrations and isotope ratios in environmental reference materials by mass spectrometry

2021 ◽  
Vol 237 ◽  
pp. 106689
Author(s):  
Steven J. Goldstein ◽  
Allison A. Price ◽  
Kimberly A. Hinrichs ◽  
Stephen P. Lamont ◽  
Andrew J. Nunn ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Precision ◽  
Reference Materials ◽  
Precision Measurement ◽  
Isotope Ratios ◽  
High Precision Measurement ◽  
Environmental Reference

scholarly journals High‐Precision Measurement of Stable Cr Isotopes in Geological Reference Materials by a Double‐Spike TIMS Method

2019 ◽  
Vol 43 (4) ◽  
pp. 647-661 ◽  
Author(s):  
Chun‐Yang Liu ◽  
Li‐Juan Xu ◽  
Chun‐Tao Liu ◽  
Jia Liu ◽  
Li‐Ping Qin ◽  
...  
Keyword(s):  
High Precision ◽  
Reference Materials ◽  
Precision Measurement ◽  
High Precision Measurement

High precision measurement of the SOS surface thickness in the rough phase

1991 ◽  
Vol 1 (12) ◽  
pp. 1669-1673 ◽  
Author(s):  
Hans Gerd Evertz ◽  
Martin Hasenbusch ◽  
Mihail Marcu ◽  
Klaus Pinn ◽  
Sorin Solomon
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
High Precision Measurement ◽  
Surface Thickness

scholarly journals BATCH PROCESSING OF TREE-RING SAMPLES FOR RADIOCARBON ANALYSIS

Radiocarbon ◽  
2020 ◽  
pp. 1-13
Author(s):  
Alexandra Fogtmann-Schulz ◽  
Sabrina G K Kudsk ◽  
Florian Adolphi ◽  
Christoffer Karoff ◽  
Mads F Knudsen ◽  
...  
Keyword(s):  
High Precision ◽  
Tree Rings ◽  
Precision Measurement ◽  
Radiocarbon Dating ◽  
The Other ◽  
High Precision Measurement ◽  
Machine Performance ◽  
High Throughput Method ◽  
Ca 50 ◽  
Low Activity

ABSTRACT We here present a comparison of methods for the pretreatment of a batch of tree rings for high-precision measurement of radiocarbon at the Aarhus AMS Centre (AARAMS), Aarhus University, Denmark. The aim was to develop an efficient and high-throughput method able to pretreat ca. 50 samples at a time. We tested two methods for extracting α-cellulose from wood to find the most optimal for our use. One method used acetic acid, the other used HCl acid for the delignification. The testing was conducted on background 14C samples, in order to assess the effect of the different pretreatment methods on low-activity samples. Furthermore, the extracted wood and cellulose fractions were analyzed using Fourier transform infrared (FTIR) spectroscopy, which showed a successful extraction of α-cellulose from the samples. Cellulose samples were pretreated at AARAMS, and the graphitization and radiocarbon analysis of these samples were done at both AARAMS and the radiocarbon dating laboratory at Lund University to compare the graphitization and AMS machine performance. No significant offset was found between the two sets of measurements. Based on these tests, the pretreatment of tree rings for high-precision radiocarbon analysis at AARAMS will henceforth use HCI for the delignification.

The high precision measurement of 208Pb+208Pb Mott scattering at energies under the Coulomb barrier: the observation of new atomic effects

1995 ◽  
Vol 583 ◽  
pp. 263-267 ◽  
Author(s):  
A. Lépine-Szily ◽  
J.M. Casandjian ◽  
W. Mittig ◽  
A.C.C. Villari ◽  
R. Lichtenthäler Filho ◽  
...  
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
Coulomb Barrier ◽  
High Precision Measurement ◽  
Mott Scattering
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