Effects of the sampling interface in MC-ICP-MS: Relative elemental sensitivities and non-linear mass dependent fractionation of Nd isotopes

2012 ◽  
Vol 27 (1) ◽  
pp. 63-70 ◽  
Author(s):  
Karla Newman
Keyword(s):  
Nd Isotopes ◽  
Linear Mass ◽  
Icp Ms ◽  
Non Linear ◽  
Sampling Interface ◽  
Mass Dependent ◽  
Mass Dependent Fractionation

In situ Nd isotope analyses in geological materials with signal enhancement and non-linear mass dependent fractionation reduction using laser ablation MC-ICP-MS

2015 ◽  
Vol 30 (1) ◽  
pp. 232-244 ◽  
Author(s):  
Lei Xu ◽  
Zhaochu Hu ◽  
Wen Zhang ◽  
Lu Yang ◽  
Yongsheng Liu ◽  
...  
Keyword(s):  
Laser Ablation ◽  
High Efficiency ◽  
Linear Mass ◽  
Nd Isotope ◽  
Bias Stability ◽  
Icp Ms ◽  
Non Linear ◽  
Mass Dependent ◽  
Mass Dependent Fractionation ◽  
Isotope Analyses

Combining high-efficiency cones with the addition of nitrogen in laser ablation MC-ICP-MS not only enhances the sensitivity and mass bias stability, but also suppresses the non-linear mass fractionation for Nd isotope analyses.

High sensitivity skimmers and non-linear mass dependent fractionation in ICP-MS

2009 ◽  
Vol 24 (6) ◽  
pp. 742 ◽  
Author(s):  
Karla Newman ◽  
Philip A. Freedman ◽  
Jamie Williams ◽  
Nick S. Belshaw ◽  
Alex N. Halliday
Keyword(s):  
High Sensitivity ◽  
Linear Mass ◽  
Icp Ms ◽  
Non Linear ◽  
Mass Dependent ◽  
Mass Dependent Fractionation

Matrix effects using an ICP-MS with a single positive ion lens and grounded stop: analyte mass dependent?

2017 ◽  
Vol 32 (5) ◽  
pp. 951-966 ◽  
Author(s):  
John W. Olesik ◽  
Shi Jiao
Keyword(s):  
Gas Flow ◽  
Matrix Effects ◽  
Mass Matrix ◽  
Gas Flow Rate ◽  
Icp Ms ◽  
Single Positive ◽  
Mass Dependent ◽  
Positive Ion ◽  
Comprehensive Characterization

Comprehensive characterization of ICP-MS matrix effects as a function of analyte mass, matrix mass, lens voltage and nebulizer gas flow rate was carried out.

scholarly journals Experience in applying a local analysis an sulfur isotopes in the ore sulfides of the largest deposits of Bodaibinsky Synclinoria (Eastern Siberia)

2019 ◽  
Vol 484 (4) ◽  
pp. 460-463
Author(s):  
N. A. Goryachev ◽  
A. V. Ignatiev ◽  
T. A. Velivetskaya ◽  
A. E. Budyak ◽  
Yu. I. Tarasova
Keyword(s):  
Isotopic Composition ◽  
Sulfur Isotopes ◽  
Gold Deposits ◽  
Local Analysis ◽  
Eastern Siberia ◽  
The Law ◽  
Mass Dependent ◽  
Mass Dependent Fractionation

The experience of LA—ICP determining of the isotopic composition of sulfur pyrite and arsenopyrite of gold deposits of the Baikal-patomsky plateau is considered. The technique is characterized. It is shown that all the studied samples have values δ34S and δ33S strictly corresponding to the law of mass-dependent fractionation of sulfur isotopes. A regular alleviation of the isotopic composition of sulfur of pyrite as its crystals grow for Sukhoi Log and the isotopic homogeneity of pyrite and pyrrhotite of the Golets Vysokhashiy deposit are established. It is concluded that the possible role of metamorphism of the Mamsko-Oronsky belt in the formation of isotopic homogeneity of ore sulfides.

A critical review on isotopic fractionation correction methods for accurate isotope amount ratio measurements by MC-ICP-MS

2018 ◽  
Vol 33 (11) ◽  
pp. 1849-1861 ◽  
Author(s):  
Lu Yang ◽  
Shuoyun Tong ◽  
Lian Zhou ◽  
Zhaochu Hu ◽  
Zoltán Mester ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Critical Review ◽  
Inductively Coupled Plasma ◽  
Isotopic Fractionation ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Mass Dependent ◽  
Isotope Amount Ratio

Proper correction of mass-dependent and mass-independent isotopic fractionation is crucial to obtain accurate isotope amount ratios by multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS).

scholarly journals Technical Note: Isotopic corrections for the radiocarbon composition of CO<sub>2</sub> in the soil gas environment must account for diffusion and diffusive mixing

2019 ◽  
Vol 16 (16) ◽  
pp. 3197-3205
Author(s):  
Jocelyn E. Egan ◽  
David R. Bowling ◽  
David A. Risk
Keyword(s):  
Gas Transport ◽  
Transport Model ◽  
Stable Carbon Isotope ◽  
Technical Note ◽  
Soil Gas ◽  
Soil Production ◽  
Gas Environment ◽  
Diffusive Mixing ◽  
Mass Dependent ◽  
Mass Dependent Fractionation

Abstract. Earth system scientists working with radiocarbon in organic samples use a stable carbon isotope (δ13C) correction to account for mass-dependent fractionation, but it has not been evaluated for the soil gas environment, wherein both diffusive gas transport and diffusive mixing are important. Using theory and an analytical soil gas transport model, we demonstrate that the conventional correction is inappropriate for interpreting the radioisotopic composition of CO2 from biological production because it does not account for important gas transport mechanisms. Based on theory used to interpret δ13C of soil production from soil CO2, we propose a new solution for radiocarbon applications in the soil gas environment that fully accounts for both mass-dependent diffusion and mass-independent diffusive mixing.

Validation of Correlations Between Nd Isotopes and Difficult-to-Measure Nuclides Predicted With Burn-Up Calculation Code by Postirradiation Examination

2011 ◽  
Author(s):  
Shiho Asai ◽  
Keisuke Okumura ◽  
Yukiko Hanzawa ◽  
Hideya Suzuki ◽  
Masaaki Toshimitsu ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Nuclear Data ◽  
Insoluble Residue ◽  
Nd Isotopes ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Nuclear Data Library ◽  
Plasma Mass Spectrometry ◽  
Calculation Code ◽  
Burnup Calculation

Correlations between Nd isotopes and difficult-to-measure (DTM) nuclides, such as Se-79, Tc-99, Sn-126, and Cs-135, predicted using a calculation code have been validated by postirradiation examination (PIE). The calculation was performed with a burnup calculation code, MVP-BURN, using the updated nuclear data library JENDL-4.0. An irradiated PWR fuel with a burnup of 44.9 GWd/t and a cooling time of 7458 days was used as a standard sample. The concentrations of Nd isotopes in the sample solutions were determined by inductively coupled plasma mass spectrometry (ICP-MS) after purification by two consecutive anion-exchange separations. The ratios of Se-79 and Cs-135 to Nd isotopes (Nd-145, Nd-146, and Nd-145+Nd-146) calculated using MVP-BURN were in good agreement with PIE values within the deviations of 8% and 6%, respectively. This indicates that these calculated ratios are applicable to the scaling factors of Se-79 and Cs-135. For Tc-99 and Sn-126, the calculated values were respectively about 50% and 20% higher than the PIE values. These overestimations were mainly caused by the lack of the contribution of an insoluble residue to the measured concentrations.

Sign in / Sign up

Export Citation Format

Share Document