scholarly journals A simple procedure to select a model for mass discrimination correction in isotope dilution inductively coupled plasma mass spectrometry

2015 ◽  
Vol 30 (5) ◽  
pp. 1197-1206 ◽  
Author(s):  
J. Terán-Baamonde ◽  
J. M. Andrade ◽  
R. M. Soto-Ferreiro ◽  
A. Carlosena ◽  
D. Prada
Keyword(s):  
Mass Spectrometry ◽  
Isotope Dilution ◽  
Inductively Coupled Plasma ◽  
Simple Procedure ◽  
Discrimination Factor ◽  
Mass Discrimination ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

A fast, simple and straightforward procedure to decide on the best model to calculate the mass discrimination factor in Isotope Dilution Inductively Coupled Plasma Mass Spectrometry (ID-ICP-MS) is proposed.

scholarly journals A simplified isotope dilution approach for the U-Pb dating of speleogenic and other low-<sup>232</sup>Th carbonates by multi-collector ICP-MS

2021 ◽  
Author(s):  
Andrew J. Mason ◽  
Anton Vaks ◽  
Sebastian F. M. Breitenbach ◽  
John N. Hooker ◽  
Gideon M. Henderson
Keyword(s):  
Mass Spectrometry ◽  
Isotope Dilution ◽  
Inductively Coupled Plasma ◽  
New Method ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

Abstract. We describe a new method for the measurement of U/Pb ratios by isotope dilution multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) for the dating of geologically young clean carbonates, particularly speleothems. The method is intended for materials containing little or no initial 232Th. We illustrate and validate the method with four examples ranging from 0.57 Ma to 20 Ma old. The new method is capable of applying the 235U-207 and 238U-234U-206Pb chronometers, common Pb and quantifiable residual 234U/238U disequilibrium permitting. These provide an alternative to the more widely used 238U-206Pb chronometer, which can be highly inaccurate for samples a few million years old, owing to uncertainties in the excess initial 234U (hence, excess radiogenic 206Pb) commonly observed in speleothems.

Accurate determination of Zn in geological and cosmochemical rock samples by isotope dilution inductively coupled plasma mass spectrometry

2015 ◽  
Vol 30 (2) ◽  
pp. 506-514 ◽  
Author(s):  
Rahat Khan ◽  
Yuta Yokozuka ◽  
Saki Terai ◽  
Naoki Shirai ◽  
Mitsuru Ebihara
Keyword(s):  
Mass Spectrometry ◽  
Isotope Dilution ◽  
Inductively Coupled Plasma ◽  
Accurate Determination ◽  
Rock Samples ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

Inductively coupled plasma mass spectrometry (ICP-MS) procedures with isotope dilution were established for the accurate determination of trace Zn (in the level of 10−4to 10−5g g−1) in several tens of mg of geological and cosmochemical rock samples.

The determination of labile cadmium in some biosolids-amended soils by isotope dilution plasma mass spectrometry

Soil Research ◽  
2003 ◽  
Vol 41 (3) ◽  
pp. 589 ◽  
Author(s):  
C. W. Gray ◽  
R. G. McLaren ◽  
J. Shiowatana
Keyword(s):  
Mass Spectrometry ◽  
Isotope Dilution ◽  
Inductively Coupled Plasma ◽  
Significant Proportion ◽  
Amended Soils ◽  
Analytical Technique ◽  
Inductively Coupled ◽  
Labile Fraction ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

An isotope dilution inductively coupled plasma-mass spectrometry (ICP-MS) technique, using an enriched stable Cd isotope, was applied to determine the labile fraction of Cd in 20 biosolids-amended soils. The measured labile Cd fraction was compared with the amounts of Cd solubilised or extracted by HNO3, EDTA, CaCl2, and Ca(NO3)2. Labile Cd, as a proportion of total soil Cd (% labile), ranged between 33 and 84% with a mean of 50%, indicating that a significant proportion of the Cd added to these soils from biosolids is in non-labile forms. EDTA was found to release Cd from non-labile sites, solubilising on average 30% more Cd than labile forms measured by isotope dilution. In contrast, the proportion of Ca(NO3)2-extractable Cd was significantly less than the measured labile fraction and probably represents Cd in soil solution. Extraction of soil with 1 M CaCl2, however, was found to provide a very good estimate of labile Cd in these biosolids-amended soils. Isotope dilution ICP-MS using an enriched stable Cd isotope and ICP-MS appears to be an analytical technique which has the potential to measure labile Cd in soils without the problems associated with the use of radioisotopes.

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