Titanium Isotope Analysis of Igneous Reference Materials Using a Double‐Spike MC–ICP–MS Method

2021 ◽  
Author(s):  
Jin LI ◽  
Suohan TANG ◽  
Xiangkun ZHU ◽  
Jianxiong MA ◽  
Xinmiao ZHAO
Keyword(s):  
Reference Materials ◽  
Isotope Analysis ◽  
Icp Ms

An improved analytical method for Re-Os isotope analysis and its application to GSJ geochemical reference materials, JCu-1 and JZn-1

2021 ◽  
Author(s):  
Mizuki Ogasawara ◽  
Junichiro Ohta ◽  
Mizuki Ishida ◽  
Moei Yano ◽  
Kazutaka Yasukawa ◽  
...  
Keyword(s):  
Reference Materials ◽  
Analytical Method ◽  
Isotope Analysis ◽  
Age Determination ◽  
Radiometric Dating ◽  
Earth Planet ◽  
Aqua Regia ◽  
Icp Ms ◽  
Geochemical Reference Materials ◽  
Os Isotope

<p>The Re-Os isotope system is an effective tool in geological studies, especially in radiometric dating. Since both Re and Os are highly siderophile and chalcophile elements, they tend to be concentrated in various sulfide minerals. Therefore, the Re-Os geochronology has been employed for direct age determination of sulfide mineralization [1, 2]. However, conventional analytical methods for the Re-Os dating are complex and consume much time and cost.</p><p>Here we present an improved analytical method for Re-Os in sulfides combined with acid digestion using HClO<sub>4</sub> [3] and sparging introduction of Os [4]. In our method, 0.4 g of powdered sulfide was digested by 1 mL of HClO<sub>4</sub> in addition to 4 mL of inverse aqua regia in Carius tube, and then the Re and Os isotope ratios were measured by MC-ICP-MS. We applied this method to the GSJ geochemical reference materials JCu-1 (copper ore from Kamaishi mine, northeastern Japan) and JZn-1 (zinc ore from Kamioka mine, central Japan). The Re-Os concentrations of JCu-1 and JZn-1 were 255-280 ppt and 4622-4828 ppt for Re, and 39.7-41.7 ppt and 21.7-30.0 ppt for Os, respectively. Furthermore, the analytical results (Re-Os concentrations, <sup>187</sup>Os/<sup>188</sup>Os, and <sup>187</sup>Re/<sup>188</sup>Os) of separated chalcopyrite from Kamaishi mine showed good agreements with those by the conventional method digesting 0.5 g of sample by 10 mL of inverse aqua regia and measured with N-TIMS.</p><p>The new method, using less total volume of acids for sample digestion, enables MC-ICP-MS analysis of sulfides with relatively lower Re and Os concentrations. In addition, for Os isotopes, a sparging method using MC-ICP-MS [4] can be utilized as a simplified analytical procedure. This simplified and improved method may be useful for dating a wider range of sulfide deposits efficiently.</p><p> </p><p>1: Nozaki, T. et al. (2013) Sci. Rep. 3, 1889.</p><p>2: Kato, Y. et al. (2009) Earth Planet. Sci. Lett., 278, 40-49.</p><p>3: Gao, B. et al. (2019) Microchem. J. 150, 104165.</p><p>4: Nozaki, T. et al. (2012) Geostand. Geoanal. Res. 36, 131-148.</p>

High precision cadmium isotope analysis of geological reference materials by double spike MC-ICP-MS

2021 ◽  
Author(s):  
Huan Peng ◽  
Dong He ◽  
Rui Guo ◽  
Xing Liu ◽  
Nicholas S. Belshaw ◽  
...  
Keyword(s):  
High Precision ◽  
Reference Materials ◽  
Isotope Analysis ◽  
Icp Ms

The effect of the DS ratio is evaluated and a correction approach is proposed to improve the accuracy and robustness of the proposed DS Cd isotope analysis.

High-Precision Iron Isotope Analysis of Geological Reference Materials by High-Resolution MC-ICP-MS

2015 ◽  
Vol 39 (3) ◽  
pp. 341-356 ◽  
Author(s):  
Yongsheng He ◽  
Shan Ke ◽  
Fang-Zhen Teng ◽  
Tiantian Wang ◽  
Hongjie Wu ◽  
...  
Keyword(s):  
High Resolution ◽  
High Precision ◽  
Reference Materials ◽  
Isotope Analysis ◽  
Iron Isotope ◽  
Icp Ms

ICP-MS AND ICP-AES ANALYSIS OF PLANT REFERENCE MATERIALS

2019 ◽  
Vol 85 (6) ◽  
pp. 11-24
Author(s):  
I. V. Nikolaeva ◽  
A. A. Kravchenko ◽  
S. V. Palessky ◽  
S. V. Nechepurenko ◽  
D. V. Semenova
Keyword(s):  
Reference Material ◽  
Mass Spectrometer ◽  
Reference Materials ◽  
Atomic Emission ◽  
Icp Ms ◽  
Lithium Metaborate ◽  
Relative Standard ◽  
Microwave System ◽  
Total Analysis ◽  
Siberian Pine

Two methods — ICP-MS and ICP-AES are used for certification of the new reference material — needles of Siberian pine (NSP-1). Techniques of the analysis include decomposition of plant samples in two different ways: acid digestion in a microwave system MARS-5 and lithium metaborate fusion followed by ICP-MS and ICP-AES analysis of the solutions. Simultaneous determinations of all the elements were carried out in low, medium and high resolution using SF-mass-spectrometer ELEMENT and atomic-emission spectrometer IRIS Advantage with external calibrations and internal standards (In — ICP-MS, Sc —ICP-AES). Middle and high resolutions of ICP mass spectrometer were used for interference corrections. Data obtained by ICP-MS and ICP-AES with different decomposition techniques are in good agreement. The ICP-MS and ICP-AES techniques have been validated by the analysis of three plant reference materials: LB-1 (leaf of a birch), Tr-1 (grass mixture) and EK-1 (Canadian pondweed). These techniques were used for the determination of 38 elements in the new reference material NSP-1. Relative standard deviations for most of the determined elements were below 10%. Combination of ICP-MS and ICP-AES techniques for certification of the new reference material makes it possible to expand the set of elements to be determined and to reduce the total analysis time.

High-precision molybdenum isotope analysis of low-Mo igneous rock samples by MC–ICP–MS

2020 ◽  
Vol 545 ◽  
pp. 119648 ◽  
Author(s):  
Jing-Jing Fan ◽  
Jie Li ◽  
Qiang Wang ◽  
Le Zhang ◽  
Jing Zhang ◽  
...  
Keyword(s):  
High Precision ◽  
Igneous Rock ◽  
Isotope Analysis ◽  
Molybdenum Isotope ◽  
Rock Samples ◽  
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...

TC1725 - A Proposed Chalcopyrite Reference Material for LA-MC-ICP-MS Sulfur Isotope Determination

2021 ◽  
Author(s):  
Zhian Bao ◽  
Kaiyun Chen ◽  
Chunlei Zong ◽  
Honglin Yuan
Keyword(s):  
Reference Material ◽  
Reference Materials ◽  
Sulfur Isotope ◽  
Accuracy And Precision ◽  
Icp Ms ◽  
Geochemical Tracer ◽  
Isotope Determination

Sulfur isotope is an important geochemical tracer in diverse fields of geosciences. Controlling the accuracy and precision of microanalysis of sulfur isotope requires well-characterized reference materials with matrices similar to...

Accurate Determination of Total Antimony Using ICP-MS and Optimization Its Extraction Efficiency From Reference and Soil Samples

2018 ◽  
Vol 6 (1) ◽  
pp. 48-58
Author(s):  
Sameer Amereih ◽  
Thomas Meisel ◽  
Wolfhard Wegsheider
Keyword(s):  
Citric Acid ◽  
Reference Materials ◽  
Microwave Digestion ◽  
Accurate Determination ◽  
Ammonium Oxalate ◽  
Ammonium Thiocyanate ◽  
Strong Acid ◽  
Disodium Salt ◽  
Icp Ms ◽  
Ammonium Hydrogen

Two independent digestion techniques (microwave acid digestion with HF and HCl, HNO3 and Na2O2 sintering, respectively) were applied to determine the total Sb concentration in a real soil sample and in reference materials: Icelandic Basalt (BIR-1), Cody Shale (SCo-1) and (Soil-7). ICP-MS was used to determine total antimony concentrations in the digested and the extracted solutions using external calibration and isotope dilution technique. The recoveries of Sb using HF in the acids digestion mixture in closed-vessels microwave digestion system were excellent and the concentrations are in very good agreement with certified or reported concentrations of reference materials. Using closed-vessels combined with microwave heating systems probably prevents the loss of volatile Sb compounds. The use of hydrogen fluoride with other strong acid can help dissociating insoluble antimony silicates. Different extraction reagents were tested for their ability to extract antimony using an ultrasonic bath namely: EDTA disodium salt, potassium hydroxide, citric acid monohydrate, pyridine-2,6-dicarboxylic acid, ammonium acetate, ammonium oxalate, ammonium thiocyanate, ammonium persulphate and di-ammonium hydrogen citrate. A 500 mmol L-1 solution of citric acid pH 1.08 proved to be the most efficient extractant. Optimization of the extraction conditions were investigated by studying the effect of pH, concentration, temperature, time of extraction, the ratio of sample mass to the volume of extractant and the number of consecutive extractions. As a result three consecutive extractions for a total time of 45 min at 80 ˚C was the most efficient condition for Sb extraction. Using these extraction conditions 61%, 3.7% RSD and 42%, 2.2% RSD (n=6) of the total antimony in the real soil and Soil-7 samples, respectively could be extracted.

scholarly journals Development of high-precision La isotope analysis by MC-ICP-MS

2021 ◽  
Author(s):  
Mitsuru Suzuki ◽  
Tsuyoshi Iizuka ◽  
Kota Yamamoto ◽  
Takafumi Hirata
Keyword(s):  
High Precision ◽  
Isotope Analysis ◽  
Icp Ms
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