Precise Mo isotope ratio measurements of low-Mo (ng g−1) geological samples using MC-ICP-MS

2016 ◽  
Vol 31 (6) ◽  
pp. 1287-1297 ◽  
Author(s):  
Jie Liu ◽  
Hanjie Wen ◽  
Yuxu Zhang ◽  
Haifeng Fan ◽  
Chuanwei Zhu
Keyword(s):  
Bias Correction ◽  
Isotope Ratio ◽  
Geological Samples ◽  
Mass Bias ◽  
Geological Processes ◽  
Icp Ms ◽  
Wide Range ◽  
Isotope Ratio Measurements

The double-spike (DS) mass bias correction approach was the method of choice for geological samples with <0.5 μg g−1 Mo; both the double-spike and the sample-standard bracketing (SSB) approaches could be applied for samples with >0.5 μg g−1 Mo. This method provided a wide range of applications for most Mo reservoirs in geological processes.

Use of Zr for mass bias correction in strontium isotope ratio determinations using MC-ICP-MS

2008 ◽  
Vol 23 (9) ◽  
pp. 1269 ◽  
Author(s):  
Lu Yang ◽  
Charlotte Peter ◽  
Ulrich Panne ◽  
Ralph E. Sturgeon
Keyword(s):  
Bias Correction ◽  
Isotope Ratio ◽  
Strontium Isotope ◽  
Mass Bias ◽  
Strontium Isotope Ratio ◽  
Icp Ms

scholarly journals Gd Matrix Effects on Eu Isotope Fractionation in Geological Rocks Using MC-ICP-MS: Optimizing Europium Isotope Ratio Measurements in Geological Samples

2021 ◽  
Author(s):  
Seung-Gu Lee ◽  
Tsuyoshi Tanaka
Keyword(s):  
Isotope Ratio ◽  
Isotope Fractionation ◽  
Matrix Effects ◽  
Internal Standard ◽  
Geological Samples ◽  
Chemical Reagent ◽  
True Value ◽  
Icp Ms ◽  
Silicate Rocks ◽  
Isotope Ratio Measurements

<p></p><p>Eu has only two isotopes (151Eu and 153 Eu). Eu and Gd are one of the rare earth elements that are very difficult to completely separate from each other. Eu isotope ratio can be determined by MC-ICP-MS using internal Sm or Gd spikes to correct for mass discrimination. NIST3117a ultrapure chemical reagent shows almost no Eu isotope fractionation regardless of the kind of normalization isotope pair. However, Eu isotope ratio in the silicate rocks was effected by Gd matrix during MC-ICP-MS measurement if a trace amount of Gd impurity remains in the purified Eu fraction. In this report, we tried to determine optimizing conditions for precise and accurate Europium isotope ratio measurements in geological samples using MC-ICP-MS. The pure Eu fraction with almost no Gd matrix separated from geological samples and NIST3117a ultrapure chemical reagent show almost same degree of Eu isotope fractionation regardless of the kind of normalization isotope pair. However, Eu isotope ratio in the silicate rocks was effected by Gd matrix during MC-ICP-MS measurement using if 154 Gd interference relative to 154 Sm as internal standard is more than ca. 0.1%. Particularly, highly fractionated granite and high silica volcanic rock with extremely low Eu concentration compared to Gd require high – purity Eu separation with a high recovery rate to obtain the true value of the Eu isotope fractionation in the geological rocks. <br></p><br><p></p>

scholarly journals Use of Ga for mass bias correction for the accurate determination of copper isotope ratio in the NIST SRM 3114 Cu standard and geological samples by MC-ICPMS

2016 ◽  
Vol 31 (1) ◽  
pp. 280-287 ◽  
Author(s):  
QingHua Hou ◽  
Lian Zhou ◽  
Shan Gao ◽  
Ting Zhang ◽  
Lanping Feng ◽  
...  
Keyword(s):  
Bias Correction ◽  
Isotope Ratio ◽  
Accurate Determination ◽  
Geological Samples ◽  
Copper Isotope ◽  
Correction Model ◽  
Mass Bias ◽  
First Time ◽  
Determination Of Copper

The absolute determination of the Cu isotope ratio in NIST SRM 3114 based on a regression mass bias correction model is performed for the first time with NIST SRM 944 Ga as the calibrant.

Neodymium isotope ratio measurements by LC-MC-ICPMS for nuclear applications: investigation of isotopic fractionation and mass bias correction

2015 ◽  
Vol 30 (2) ◽  
pp. 443-452 ◽  
Author(s):  
Florence Guéguen ◽  
Hélène Isnard ◽  
Anthony Nonell ◽  
Laurent Vio ◽  
Thomas Vercouter ◽  
...  
Keyword(s):  
Bias Correction ◽  
Isotope Ratio ◽  
Isotopic Fractionation ◽  
Chromatographic Column ◽  
Time Lags ◽  
Faraday Cup ◽  
Mass Bias ◽  
Mass Dependent ◽  
Nuclear Applications ◽  
Isotope Ratio Measurements

The causes of isotope ratio drifts observed in LC-MC-ICPMS experiments could be explained by both mass dependent isotopic fractionation on the chromatographic column and distinct time lags between amplifier responses of the Faraday cup configuration.

scholarly journals Gd Matrix Effects on Eu Isotope Fractionation in Geological Rocks Using MC-ICP-MS: Optimizing Europium Isotope Ratio Measurements in Geological Samples

2021 ◽  
Author(s):  
Seung-Gu Lee ◽  
Tsuyoshi Tanaka
Keyword(s):  
Isotope Ratio ◽  
Isotope Fractionation ◽  
Matrix Effects ◽  
Internal Standard ◽  
Geological Samples ◽  
Chemical Reagent ◽  
True Value ◽  
Icp Ms ◽  
Silicate Rocks ◽  
Isotope Ratio Measurements

<p></p><p>Eu has only two isotopes (151Eu and 153 Eu). Eu and Gd are one of the rare earth elements that are very difficult to completely separate from each other. Eu isotope ratio can be determined by MC-ICP-MS using internal Sm or Gd spikes to correct for mass discrimination. NIST3117a ultrapure chemical reagent shows almost no Eu isotope fractionation regardless of the kind of normalization isotope pair. However, Eu isotope ratio in the silicate rocks was effected by Gd matrix during MC-ICP-MS measurement if a trace amount of Gd impurity remains in the purified Eu fraction. In this report, we tried to determine optimizing conditions for precise and accurate Europium isotope ratio measurements in geological samples using MC-ICP-MS. The pure Eu fraction with almost no Gd matrix separated from geological samples and NIST3117a ultrapure chemical reagent show almost same degree of Eu isotope fractionation regardless of the kind of normalization isotope pair. However, Eu isotope ratio in the silicate rocks was effected by Gd matrix during MC-ICP-MS measurement using if 154 Gd interference relative to 154 Sm as internal standard is more than ca. 0.1%. Particularly, highly fractionated granite and high silica volcanic rock with extremely low Eu concentration compared to Gd require high – purity Eu separation with a high recovery rate to obtain the true value of the Eu isotope fractionation in the geological rocks. <br></p><br><p></p>

Sign in / Sign up

Export Citation Format

Share Document