Platinum stable isotope analysis of geological standard reference materials by double-spike MC-ICPMS

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Platinum stable isotope analysis of geological standard reference materials by double-spike MC-ICPMS. / Creech, John Benjamin; Baker, J. A.; Handler, M. R.; Bizzarro, Martin.

In: Chemical Geology, Vol. 363, 2014, p. 293-300.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Creech, JB, Baker, JA, Handler, MR & Bizzarro, M 2014, 'Platinum stable isotope analysis of geological standard reference materials by double-spike MC-ICPMS', Chemical Geology, vol. 363, pp. 293-300. https://doi.org/10.1016/j.chemgeo.2013.11.009

APA

Creech, J. B., Baker, J. A., Handler, M. R., & Bizzarro, M. (2014). Platinum stable isotope analysis of geological standard reference materials by double-spike MC-ICPMS. Chemical Geology, 363, 293-300. https://doi.org/10.1016/j.chemgeo.2013.11.009

Vancouver

Creech JB, Baker JA, Handler MR, Bizzarro M. Platinum stable isotope analysis of geological standard reference materials by double-spike MC-ICPMS. Chemical Geology. 2014;363:293-300. https://doi.org/10.1016/j.chemgeo.2013.11.009

Author

Creech, John Benjamin ; Baker, J. A. ; Handler, M. R. ; Bizzarro, Martin. / Platinum stable isotope analysis of geological standard reference materials by double-spike MC-ICPMS. In: Chemical Geology. 2014 ; Vol. 363. pp. 293-300.

Bibtex

@article{498b40ab289c4a378cd4943640d91c94,
title = "Platinum stable isotope analysis of geological standard reference materials by double-spike MC-ICPMS",
abstract = "We report a method for the chemical purification of Pt from geological materials by ion-exchange chromatography for subsequent Pt stable isotope analysis by multiple-collector inductively coupled plasma mass spectrometry (MC-ICPMS) using a Pt-Pt double-spike to correct for instrumental mass bias. Double-spiking of samples was carried out prior to digestion and chemical separation to correct for any mass-dependent fractionation that may occur due to incomplete recovery of Pt. Samples were digested using a NiS fire assay method, which pre-concentrates Pt into a metallic bead that is readily dissolved in acid in preparation for anion-exchange chemistry. Pt was recovered from anion-exchange resin in concentrated HNO acid after elution of matrix elements, including the other platinum group elements (PGE), in dilute HCl and HNO acids. The separation method has been calibrated using a precious metal standard solution doped with a range of synthetic matrices and results in Pt yields of ≥90% with purity of ≥95%. Using this chemical separation technique, we have separated Pt from 11 international geological standard reference materials comprising of PGE ores, mantle rocks, igneous rocks and one sample from the Cretaceous-Paleogene boundary layer. Pt concentrations in these samples range from ca. 5ngg to 4μgg. This analytical method has been shown to have an external reproducibility on δPt (permil difference in the Pt/Pt ratio from the IRMM-010 standard) of ±0.040 (2sd) on Pt solution standards (Creech et al., 2013, J. Anal. At. Spectrom. 28, 853-865). The reproducibility in natural samples is evaluated by processing multiple replicates of four standard reference materials, and is conservatively taken to be ca. ±0.088 (2sd). Pt stable isotope data for the full set of reference materials have a range of δPt values with offsets of up to 0.4‰ from the IRMM-010 standard, which are readily resolved with this technique. These results demonstrate the potential of the Pt isotope system as a tracer in geochemical systems.",
author = "Creech, {John Benjamin} and Baker, {J. A.} and Handler, {M. R.} and Martin Bizzarro",
year = "2014",
doi = "10.1016/j.chemgeo.2013.11.009",
language = "English",
volume = "363",
pages = "293--300",
journal = "Chemical Geology",
issn = "0009-2541",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Platinum stable isotope analysis of geological standard reference materials by double-spike MC-ICPMS

AU - Creech, John Benjamin

AU - Baker, J. A.

AU - Handler, M. R.

AU - Bizzarro, Martin

PY - 2014

Y1 - 2014

N2 - We report a method for the chemical purification of Pt from geological materials by ion-exchange chromatography for subsequent Pt stable isotope analysis by multiple-collector inductively coupled plasma mass spectrometry (MC-ICPMS) using a Pt-Pt double-spike to correct for instrumental mass bias. Double-spiking of samples was carried out prior to digestion and chemical separation to correct for any mass-dependent fractionation that may occur due to incomplete recovery of Pt. Samples were digested using a NiS fire assay method, which pre-concentrates Pt into a metallic bead that is readily dissolved in acid in preparation for anion-exchange chemistry. Pt was recovered from anion-exchange resin in concentrated HNO acid after elution of matrix elements, including the other platinum group elements (PGE), in dilute HCl and HNO acids. The separation method has been calibrated using a precious metal standard solution doped with a range of synthetic matrices and results in Pt yields of ≥90% with purity of ≥95%. Using this chemical separation technique, we have separated Pt from 11 international geological standard reference materials comprising of PGE ores, mantle rocks, igneous rocks and one sample from the Cretaceous-Paleogene boundary layer. Pt concentrations in these samples range from ca. 5ngg to 4μgg. This analytical method has been shown to have an external reproducibility on δPt (permil difference in the Pt/Pt ratio from the IRMM-010 standard) of ±0.040 (2sd) on Pt solution standards (Creech et al., 2013, J. Anal. At. Spectrom. 28, 853-865). The reproducibility in natural samples is evaluated by processing multiple replicates of four standard reference materials, and is conservatively taken to be ca. ±0.088 (2sd). Pt stable isotope data for the full set of reference materials have a range of δPt values with offsets of up to 0.4‰ from the IRMM-010 standard, which are readily resolved with this technique. These results demonstrate the potential of the Pt isotope system as a tracer in geochemical systems.

AB - We report a method for the chemical purification of Pt from geological materials by ion-exchange chromatography for subsequent Pt stable isotope analysis by multiple-collector inductively coupled plasma mass spectrometry (MC-ICPMS) using a Pt-Pt double-spike to correct for instrumental mass bias. Double-spiking of samples was carried out prior to digestion and chemical separation to correct for any mass-dependent fractionation that may occur due to incomplete recovery of Pt. Samples were digested using a NiS fire assay method, which pre-concentrates Pt into a metallic bead that is readily dissolved in acid in preparation for anion-exchange chemistry. Pt was recovered from anion-exchange resin in concentrated HNO acid after elution of matrix elements, including the other platinum group elements (PGE), in dilute HCl and HNO acids. The separation method has been calibrated using a precious metal standard solution doped with a range of synthetic matrices and results in Pt yields of ≥90% with purity of ≥95%. Using this chemical separation technique, we have separated Pt from 11 international geological standard reference materials comprising of PGE ores, mantle rocks, igneous rocks and one sample from the Cretaceous-Paleogene boundary layer. Pt concentrations in these samples range from ca. 5ngg to 4μgg. This analytical method has been shown to have an external reproducibility on δPt (permil difference in the Pt/Pt ratio from the IRMM-010 standard) of ±0.040 (2sd) on Pt solution standards (Creech et al., 2013, J. Anal. At. Spectrom. 28, 853-865). The reproducibility in natural samples is evaluated by processing multiple replicates of four standard reference materials, and is conservatively taken to be ca. ±0.088 (2sd). Pt stable isotope data for the full set of reference materials have a range of δPt values with offsets of up to 0.4‰ from the IRMM-010 standard, which are readily resolved with this technique. These results demonstrate the potential of the Pt isotope system as a tracer in geochemical systems.

U2 - 10.1016/j.chemgeo.2013.11.009

DO - 10.1016/j.chemgeo.2013.11.009

M3 - Journal article

C2 - 25684781

AN - SCOPUS:84889683692

VL - 363

SP - 293

EP - 300

JO - Chemical Geology

JF - Chemical Geology

SN - 0009-2541

ER -

ID: 96088727