A fully automated direct injection nebulizer (d-DIHEN) for MC-ICP-MS isotope analysis: application to boron isotope ratio measurements

2014 ◽  
Vol 29 (9) ◽  
pp. 1698-1707 ◽  
Author(s):  
Pascale Louvat ◽  
Julien Moureau ◽  
Guillaume Paris ◽  
Julien Bouchez ◽  
Johanna Noireaux ◽  
...  
Keyword(s):  
Boric Acid ◽  
Isotope Ratio ◽  
Direct Injection ◽  
Isotope Analysis ◽  
Boron Isotope ◽  
Boron Isotopes ◽  
Acid Solutions ◽  
Icp Ms ◽  
Analysis Application ◽  
Isotope Ratio Measurements

This work presents a fully automated setup for using direct injection nebulization as an introduction system for solution measurements by MC-ICP-MS, here applied to boron isotopes in pure boric acid solutions and natural samples.

Calibration of boron isotope ratio measurements by MC-ICP-MS using normalisation to admixed internal standards

2020 ◽  
Vol 35 (11) ◽  
pp. 2723-2731
Author(s):  
D. Malinovsky ◽  
P. J. H. Dunn ◽  
H. Goenaga-Infante
Keyword(s):  
Isotope Ratio ◽  
Isotopic Analysis ◽  
Isotope Ratios ◽  
Boron Isotope ◽  
Internal Standards ◽  
Icp Ms ◽  
Isotope Ratio Measurements

Online normalisation to isotope ratios of admixed internal standards is an important technique in isotopic analysis by multicollector ICP-MS (MC-ICP-MS).

Transient signal isotope analysis using multicollection of ion beams with Faraday cups equipped with 1012 Ω and 1011 Ω feedback resistors

2015 ◽  
Vol 30 (7) ◽  
pp. 1582-1589 ◽  
Author(s):  
Alkiviadis Gourgiotis ◽  
Gérard Manhès ◽  
Pascale Louvat ◽  
Julien Moureau ◽  
Jérôme Gaillardet
Keyword(s):  
Isotope Ratio ◽  
Isotope Analysis ◽  
Ion Beams ◽  
Signal Duration ◽  
Transient Signal ◽  
Potential Use ◽  
Isotope Ratio Measurements

This work is a first attempt to evaluate the potential use of 1012 Ω amplifiers for transient signal isotope analysis. We showed how the transient signal duration influences the accuracy of the isotope ratio measurements.

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 Copper Isotope Ratio Measurements of Cu-Dominated Minerals Without Column Chromatography Using MC-ICP-MS

2020 ◽  
Vol 8 ◽  
Author(s):  
Yan Zhang ◽  
Zhian Bao ◽  
Nan Lv ◽  
Kaiyun Chen ◽  
Chunlei Zong ◽  
...  
Keyword(s):  
Column Chromatography ◽  
Isotope Ratio ◽  
Copper Isotope ◽  
Icp Ms ◽  
Isotope Ratio Measurements

Strategies for isotope ratio measurements with a double focusing sector field ICP-MS

1999 ◽  
Vol 364 (5) ◽  
pp. 495-498 ◽  
Author(s):  
M. Hamester ◽  
D. Wiederin ◽  
J. Wills ◽  
W. Kerl ◽  
C. B. Douthitt
Keyword(s):  
Isotope Ratio ◽  
Icp Ms ◽  
Double Focusing ◽  
Isotope Ratio Measurements

Boron isotope analysis of coral skeletons by laser ablation MC-ICP-MS: new insights into calcification and environmental reconstruction at high temporal resolution

2020 ◽  
Author(s):  
Gavin L. Foster ◽  
Thomas B. Chalk ◽  
Christopher D. Standish
Keyword(s):  
Laser Ablation ◽  
Trace Element ◽  
Temporal Resolution ◽  
Isotope Analysis ◽  
Coral Skeleton ◽  
Boron Isotope ◽  
High Temporal Resolution ◽  
Carbonate System ◽  
Seawater Ph ◽  
Icp Ms

&lt;p&gt;Despite being some of the largest bio-constructions on the planet, coral reefs are made by many millions of cm- to mm-sized polyps of Scleractinian corals. Calcification occurs in a micron sized space sandwiched between the coral animal and the existing skeleton, known as the extra cellular medium (ECM). The coral animal has a tight control on the carbonate system in this space through deploying enzymatic pumps (e.g. Ca-ATPase) and secreting acidic-rich proteins. Tracking the state of the carbonate system in the ECM is therefore key to forming a mechanistic understanding of how environmental change, such as ocean acidification, influences skeletal formation and ultimately the growth and resilience of these important ecosystems.&lt;/p&gt;&lt;p&gt;Traditional means to examine ECM composition is through the use of micro-electrodes. While these approaches have revealed many key insights they are, by their nature, invasive.&amp;#160; They also only provide snap shots of information for corals grown in the laboratory. The boron isotopic composition of the coral skeleton and its boron content (expressed as B/Ca ratio) have recently emerged as a viable alternative approach to fully characterise the carbonate system in the ECM.&amp;#160; However, most studies employ bulk sampling techniques which require averaging across both structural elements of the coral skeleton and many months to years of growth. Laser ablation MC-ICP-MS approaches are now available as an alternative sampling protocol (e.g. Standish et al. 2019), and along with B/Ca (and other trace element) measurements this not only allows a reconstruction of the full carbonate system of the ECM from an analysis of the skeleton of any coral (cultured or wild) at unprecedented spatial and temporal resolution, but it also allows an examination of the influence of the carbonate system in the ECM on trace element incorporation.&amp;#160;&lt;/p&gt;&lt;p&gt;Here we present boron isotope and trace element analyses of several tropical, reef-building, corals to examine the nature and magnitude of fine scale variation in ECM composition.&amp;#160; By studying corals from locations where external seawater is well known we also gain insights into trace element incorporation and whether external seawater pH can be accurately reconstructed from the boron-based proxies at weekly (or better) resolution.&amp;#160;&lt;/p&gt;&lt;p&gt;&amp;#160;&lt;/p&gt;&lt;p&gt;Standish, C.D., Chalk, T.B., Babila, T.L., Milton, J.A., Palmer, M.R., Foster, G.L. (2019) The effect of matrix interferences in situ boron isotope analysis by laser ablation MC-ICP-MS, Rapid Communications in Mass Spectrometry 33: 959&amp;#8211;968 https://doi.org/10.1002/rcm.8432&lt;/p&gt;

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