Investigation into the behavior of metal-argon polyatomic ions (MAr+) in the extraction region of inductively coupled plasma-mass spectrometry

Ebert, Chris; Witte, Travis M.; Houk, R. S.

doi:10.1016/j.sab.2012.06.046

Cited by 9 publications

(3 citation statements)

References 38 publications

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“…The highprecision demonstrated by thesestudies relies in part on careful separation of elements of interest from matrix and trace elements. For example, Ti, a high-abundance element in silicate rocks, can form oxides, amides (Sugiyama and Nakano 2014) and argides (Ebert et al 2012) when analysing isotopic compositions by inductively coupled plasma-mass spectrometry (ICP-MS), and these compounds may lead to isobaric interferences on measured isotopes at a given m/z (mass to charge) ratio. Excess Ti in the sample solution will additionally plate sampler and skimmer cones with a salt crust, thus decreasing instrumental sensitivity through time.…”

Section: Received 16 Aug 18 -Accepted 24 Dec 18mentioning

confidence: 99%

Chemical Separation of Tungsten and Other Trace Elements for TIMS Isotope Ratio Measurements Using Organic Acids

Peters

Mundl‐Petermeier

Horan

et al. 2019

Geostandard Geoanalytic Res

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One requirement for isotope ratio measurement results with small measurement uncertainties is that the element of interest is effectively separated from the sample matrix. Efficient chemical separation of W from matrix components, especially Ti, can be challenging, particularly for large test portion masses (> 1 g). We present a new W separation procedure that takes advantage of the distinct complexation behaviour of Ti and W with citrate ligand in a moderately low pH, oxidising solution. This preparation procedure can reduce the Ti/W ratio of large (4–10 g) basaltic (i.e., high‐matrix) test portions by a factor of 105, relative to their original compositions, in a two‐step separation procedure. The procedure additionally provides a separate, well‐purified Mo fraction. We show that optimal separation requires precise selection of reagent concentrations and sample load. The procedure was employed to determine the μ182W composition of BHVO‐2 as −6.7 ± 4.2 (2 standard deviation, 2s). The principles derived from this method may prove useful for chemical separation of other elements used for geochemical and cosmochemical applications given an appropriate selection of organic acid. Future successful applications of this method may reveal that the use of organic acids as procedural reagents is a currently under‐utilised tool for efficient chemical separation protocols.

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Section: Received 16 Aug 18 -Accepted 24 Dec 18mentioning

confidence: 99%

Chemical Separation of Tungsten and Other Trace Elements for TIMS Isotope Ratio Measurements Using Organic Acids

Peters

Mundl‐Petermeier

Horan

et al. 2019

Geostandard Geoanalytic Res

View full text Add to dashboard Cite

show abstract

“…Recently reported improvements in instrument sensitivity by several ICP‐MS manufacturers are attributed to new designs of the interface (cone shape, size and shape of the cone orifice, the juxtaposition of sample and skimmer cones) as well as improved vacuum in the interface region (e.g., Ebert et al . , Taylor and Farnsworth ). Günther et al .…”

Section: Advances In Plasma Source Mass Spectrometry (Contribution Bymentioning

confidence: 99%

GGR Biennial Critical Review: Analytical Developments Since 2010

Wiedenbeck

Bugoi

Duke

et al. 2012

Geostandard Geoanalytic Res

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Advances in the chemical and isotopic characterisation of geological and environmental materials can often be ascribed to technological improvements in analytical hardware. Equally, the creation of novel methods of data acquisition and interpretation, including access to better reference materials, can also be crucial components enabling important breakthroughs. This biennial review highlights key advances in either instrumentation or data acquisition and treatment, which have appeared since January 2010. This review is based on the assessments by scientists prominent in each of the given analytical fields; it is not intended as an exhaustive summary, but rather provides insight from experts of the most significant advances and trends in their given field of expertise. In contrast to earlier reviews, this presentation has been formulated into a unified work, providing a single source covering a broad spectrum of geoanalytical techniques. Additionally, some themes that were not previously emphasised, in particular thermal ionisation mass spectrometry, accelerator‐based methods and vibrational spectroscopy, are also presented in detail.

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“…Houk's group 96 have continued their studies of metal argide (MAr + ) polyatomic ions of Co, Cr, Cu, Fe, Mn, Ni, Ti, V and Zn in the ion extraction interface of an ICP-MS instrument. They compared experimental measurements of MAr + /M + ratios with theoretical ratios calculated from the expected thermodynamic equilibrium at T gas ¼ 6000 K, and found that the experimental ratios were far lower than the calculated ratios, with the weakest bound species exhibiting the largest discrepancy.…”

Section: Fundamentalsmentioning

confidence: 99%

Atomic spectrometry updates: Review of advances in atomic spectrometry and related techniques

Evans

Pisonero

Smith

et al. 2014

J. Anal. At. Spectrom.

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Investigation into the behavior of metal-argon polyatomic ions (MAr+) in the extraction region of inductively coupled plasma-mass spectrometry

Cited by 9 publications

References 38 publications

Chemical Separation of Tungsten and Other Trace Elements for TIMS Isotope Ratio Measurements Using Organic Acids

Chemical Separation of Tungsten and Other Trace Elements for TIMS Isotope Ratio Measurements Using Organic Acids

GGR Biennial Critical Review: Analytical Developments Since 2010

Atomic spectrometry updates: Review of advances in atomic spectrometry and related techniques

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