Precise δ88/86Sr determination on a MC-ICP-MS by an improved method combining Zr-empirical external normalization isobaric interference correction and 84Sr–87Sr double spike

2021 ◽  
Author(s):  
Hou-Chun Liu ◽  
Yen-Hong Chen ◽  
Chen-Feng You ◽  
Chuan-Hsiung Chung
Keyword(s):  
Improved Method ◽  
Isobaric Interference ◽  
Interference Correction ◽  
Icp Ms

Zr-EEN isobaric interference correction coupled with the 84Sr–87Sr double spike method allows highly accurate and precise δ88/86Sr determination on a MC-ICP-MS.

A new practical isobaric interference correction model for the in situ Hf isotopic analysis using laser ablation-multi-collector-ICP-mass spectrometry of zircons with high Yb/Hf ratios

2019 ◽  
Vol 34 (6) ◽  
pp. 1223-1232 ◽  
Author(s):  
Hai-Ou Gu ◽  
He Sun ◽  
Fangyue Wang ◽  
Can Ge ◽  
Taofa Zhou
Keyword(s):  
Mass Spectrometry ◽  
Laser Ablation ◽  
Isotopic Analysis ◽  
Correction Model ◽  
Isobaric Interference ◽  
Interference Correction ◽  
Icp Ms ◽  
Icp Mass Spectrometry

An isobaric interference correction model was proposed for the in situ Hf isotopic analysis of zircons with high Yb/Hf ratios using LA-MC-ICP-MS.

In situ Fe isotopic analyses of fourteen reference materials using a synthetic Cr standard for mass bias and isobaric interference corrections by femtosecond LA-MC-ICP-MS

2021 ◽  
Author(s):  
Lei Xu ◽  
Wen Zhang ◽  
Tao Luo ◽  
Jin-Hui Yang ◽  
Zhaochu Hu
Keyword(s):  
Reference Materials ◽  
Isotope Ratios ◽  
Isobaric Interference ◽  
Analytical Technique ◽  
Mass Bias ◽  
Icp Ms ◽  
Isotopic Analyses

High precise and accurate measurements of Fe isotope ratios for fourteen reference materials from the USGS, MPI-DING and CGSG were successfully carried out using a developed analytical technique by fs...

scholarly journals The ‘europium anomaly’ in plants: facts and fiction

2021 ◽  
Author(s):  
Olivier Pourret ◽  
Antony van der Ent ◽  
Andrew Hursthouse ◽  
Dasapta Irawan ◽  
Haiyan Liu ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Data Availability ◽  
Soil Systems ◽  
Eu Anomaly ◽  
Interference Correction ◽  
Icp Ms ◽  
Fair Principles ◽  
Preferential Uptake ◽  
Ree Pattern

Rare earth elements (REEs) and normalized REE pattern determined in plant and soil samples represent powerful tools to trace biogeochemical processes during weathering, soil genesis and processes in the rhizosphere, and thus publications reporting rare earth elements and normalized REE pattern in soil systems and plants are increasing rapidly. Generally, a normalized REE pattern allow for the recognition of an anomalous concentrations of an individual REE. In the literature anomalies are predominantly reported/focused for/on the redox-sensitive elements cerium (Ce) and europium (Eu) that can shift their oxidation state during interactions with organic and inorganic soil phases and biological processes affecting the elements’ mobility in soil and uptake by plants. Thus positive Eu anomalies in plants are often interpreted as a consequence of reduction of Eu3+ to Eu2+ in the rhizosphere followed by a preferential uptake of Eu2+. However, due to an analytical artefact in ICP-MS analysis, a false Eu anomaly may be reported. This can be avoided by using a barium (Ba) interference correction. We draw attention to the possibility of this problem and to being aware of potential occurrence when Eu anomalies are reported. Finally, we recommend (i) including information on how this potential problem was dealt with in the Materials and Methods section of articles and (ii) how to implement FAIR principles in the section (including data availability on an open repository).

An improved method of Cr purification for high precision measurement of Cr isotopes by double spike MC-ICP-MS

2018 ◽  
Vol 33 (5) ◽  
pp. 809-821 ◽  
Author(s):  
Jian-Ming Zhu ◽  
Guangliang Wu ◽  
Xiangli Wang ◽  
Guilin Han ◽  
Lixin Zhang
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
Improved Method ◽  
High Precision Measurement ◽  
Purification Method ◽  
Highly Efficient ◽  
Icp Ms

A flexible, easy and highly efficient Cr purification method was developed for high-precision measurement of Cr isotopes by double-spike MC-ICP-MS.

An Improved Method for the Preparation and TEM Examination of Sharp Pointed Tips used in APFIM and STM

1990 ◽  
Vol 48 (2) ◽  
pp. 102-103
Author(s):  
E.A. Fischione ◽  
P.E. Fischione ◽  
J.J. Haugh ◽  
M.G. Burke
Keyword(s):  
Atom Probe ◽  
Preparation Process ◽  
Improved Method ◽  
Ion Milling ◽  
Polishing Process ◽  
Probe Field ◽  
Scanning Tunnelling ◽  
Stm Tips ◽  
Tunnelling Microscopy ◽  
Ion Microscopy

A common requirement for both Atom Probe Field-Ion Microscopy (APFIM) and Scanning Tunnelling Microscopy (STM) is a sharp pointed tip for use as either the specimen (APFIM) or the probe (STM). Traditionally, tips have been prepared by either chemical or electropolishing techniques. Recently, ion-milling has been successfully employed in the production of APFIM tips [1]. Conventional electropolishing techniques are applicable to a wide variety of metals, but generally require careful manual adjustments during the polishing process and may also be time-consuming. In order to reduce the time and effort involved in the preparation process, a compact, self-contained polishing unit has been developed. This system is based upon the conventional two-stage electropolishing technique in which the specimen/tip blank is first locally thinned or “necked”, and subsequently electropolished until separation occurs.[2,3] The result of this process is the production of two APFIM or STM tips. A mechanized polishing unit that provides these functions while automatically maintaining alignment has been designed and developed.

Immunoelectron microscopic localization of elastic tissue in archival material using an improved method

1990 ◽  
Vol 48 (3) ◽  
pp. 794-795
Author(s):  
J. C. Fanning ◽  
J. F. White ◽  
R. Polewski ◽  
E. G. Cleary
Keyword(s):  
Normal Animal ◽  
Animal Tissue ◽  
Elastic Tissue ◽  
Human Tissues ◽  
Improved Method ◽  
Tissue Samples ◽  
Archival Material ◽  
Immuno Electron Microscopy ◽  
Arteries And Veins ◽  
Biochemical Examination

Elastic tissue is an important component of the walls of arteries and veins, of skin, of the lungs and in lesser amounts, of many other tissues. It is responsible for the rubber-like properties of the arteries and for the normal texture of young skin. It undergoes changes in a number of important diseases such as atherosclerosis and emphysema and on exposure of skin to sunlight.We have recently described methods for the localizationof elastic tissue components in normal animal and human tissues. In the study of developing and diseased tissues it is often not possible to obtain samples which have been optimally prepared for immuno-electron microscopy. Sometimes there is also a need to examine retrospectively samples collected some years previously. We have therefore developed modifications to our published methods to allow examination of human and animal tissue samples obtained at surgery or during post mortem which have subsequently been: 1. stored frozen at -35° or -70°C for biochemical examination; 2.

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