Refining Boron Isotopic Measurements of Silicate Samples by Multi-Collector-Inductively Coupled Plasma-Mass Spectrometry (MC-ICP-MS)

André N. Paul; Joseph A. Stewart; Samuele Agostini; Linda A. Kirstein; Jan C.M. De Hoog; Ivan P. Savov; Kristina Walowski; James W.B. Rae; Tim Elliott

doi:10.1111/ggr.12527

Refining Boron Isotopic Measurements of Silicate Samples by Multi-Collector-Inductively Coupled Plasma-Mass Spectrometry (MC-ICP-MS)

André N. Paul, Joseph A. Stewart, Samuele Agostini, Linda A. Kirstein, Jan C.M. De Hoog, Ivan P. Savov, Kristina Walowski, James W.B. Rae, Tim Elliott

Research output: Contribution to journal › Article (Academic Journal) › peer-review

2 Citations (Scopus)

Abstract

Solution MC-ICP-MS is an established technique for high precision boron isotope measurement results (δ11BSRM 951) in carbonates, yet its application to silicate rocks has been limited. Impediments include volatilisation during silicate dissolution and contamination during chemical purification. To address this, we present a low-blank sample preparation procedure that couples hydrofluoric acid-digestion and low-temperature evaporation (mannitol-free), to an established MC-ICP-MS measurement procedure following chemical purification using B-specific Amberlite IRA 743 resin. We obtain accurate δ11BSRM 951 values (intermediate precision ±0.2?) for boric acid (BAM ERM-AE121 19.65 ±?0.14?) and carbonate (NIST RM 8301 (Coral) 24.24 ± 0.11?) reference materials. For silicate reference materials covering mafic to felsic compositions we obtain δ11BSRM 951 with intermediate precision < ±0.6? (2s), namely JB-2 6.9 ±?0.4?; IAEA-B-5 -6.0 ±?0.6?; IAEA-B-6 -3.9 ±?0.5? (2s). Furthermore, splits of these same reference materials were processed by an alternative fusion and purification procedure. We find excellent agreement between δ11BSRM 951 measurement results by MC-ICP-MS of the reference materials using both sample processing techniques. These measurement results show that our sample processing and MC-ICP-MS methods provide consistent δ11BSRM 951 values for low B-mass fraction samples. We present new data from Mid Ocean Ridge Basalt (MORB) glass, documenting a range in δ11BSRM 951 from -5.6 ± 0.3? to -8.8 ± 0.5? (2s), implying some upper mantle δ11BSRM 951 heterogeneity.

Original language	English
Journal	Geostandards and Geoanalytical Research
Volume	n/a
Issue number	n/a
DOIs	https://doi.org/10.1111/ggr.12527
Publication status	Published - 13 Sept 2023

Bibliographical note

Funding Information:
We thank Carolyn Taylor for support during laboratory work. We thank Chris Coath for technical support in mass spectrometry work and helpful discussion. We thank three anonymous reviewers for their comments and suggestions. We also thank Editor Prof. T. Meisel for his handling of the manuscript, constructive comments and suggestions. This study received support from the National Environmental Research Council grant NE/M000443/1 awarded to LK, Grant NE/N011716/1 to J.W.B.R., and IGG‐CNR grant P1600514 awarded to SA. There is no conflict of interest to declare by the authors. Open access funding provided by the Université de Genève.

Publisher Copyright:
© 2023 The Authors. Geostandards and Geoanalytical Research published by John Wiley & Sons Ltd on behalf of International Association of Geoanalysts.

Keywords

δ11BSRM 951
MORB volcanic glass
OIB volcanic glass
silicate reference materials
MC-ICP-MS
HF digestion
boron isotopes

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@article{615fc3360412409e98ffb5021746dde8,

title = "Refining Boron Isotopic Measurements of Silicate Samples by Multi-Collector-Inductively Coupled Plasma-Mass Spectrometry (MC-ICP-MS)",

abstract = "Solution MC-ICP-MS is an established technique for high precision boron isotope measurement results (δ11BSRM 951) in carbonates, yet its application to silicate rocks has been limited. Impediments include volatilisation during silicate dissolution and contamination during chemical purification. To address this, we present a low-blank sample preparation procedure that couples hydrofluoric acid-digestion and low-temperature evaporation (mannitol-free), to an established MC-ICP-MS measurement procedure following chemical purification using B-specific Amberlite IRA 743 resin. We obtain accurate δ11BSRM 951 values (intermediate precision ±0.2?) for boric acid (BAM ERM-AE121 19.65 ±?0.14?) and carbonate (NIST RM 8301 (Coral) 24.24 ± 0.11?) reference materials. For silicate reference materials covering mafic to felsic compositions we obtain δ11BSRM 951 with intermediate precision < ±0.6? (2s), namely JB-2 6.9 ±?0.4?; IAEA-B-5 -6.0 ±?0.6?; IAEA-B-6 -3.9 ±?0.5? (2s). Furthermore, splits of these same reference materials were processed by an alternative fusion and purification procedure. We find excellent agreement between δ11BSRM 951 measurement results by MC-ICP-MS of the reference materials using both sample processing techniques. These measurement results show that our sample processing and MC-ICP-MS methods provide consistent δ11BSRM 951 values for low B-mass fraction samples. We present new data from Mid Ocean Ridge Basalt (MORB) glass, documenting a range in δ11BSRM 951 from -5.6 ± 0.3? to -8.8 ± 0.5? (2s), implying some upper mantle δ11BSRM 951 heterogeneity.",

keywords = "δ11BSRM 951, MORB volcanic glass, OIB volcanic glass, silicate reference materials, MC-ICP-MS, HF digestion, boron isotopes",

author = "Paul, {Andr{\'e} N.} and Stewart, {Joseph A.} and Samuele Agostini and Kirstein, {Linda A.} and {De Hoog}, {Jan C.M.} and Savov, {Ivan P.} and Kristina Walowski and Rae, {James W.B.} and Tim Elliott",

note = "Funding Information: We thank Carolyn Taylor for support during laboratory work. We thank Chris Coath for technical support in mass spectrometry work and helpful discussion. We thank three anonymous reviewers for their comments and suggestions. We also thank Editor Prof. T. Meisel for his handling of the manuscript, constructive comments and suggestions. This study received support from the National Environmental Research Council grant NE/M000443/1 awarded to LK, Grant NE/N011716/1 to J.W.B.R., and IGG‐CNR grant P1600514 awarded to SA. There is no conflict of interest to declare by the authors. Open access funding provided by the Universit{\'e} de Gen{\`e}ve. Publisher Copyright: {\textcopyright} 2023 The Authors. Geostandards and Geoanalytical Research published by John Wiley & Sons Ltd on behalf of International Association of Geoanalysts.",

year = "2023",

month = sep,

day = "13",

doi = "10.1111/ggr.12527",

language = "English",

volume = "n/a",

journal = "Geostandards and Geoanalytical Research",

issn = "1639-4488",

publisher = "Wiley",

number = "n/a",

}

TY - JOUR

T1 - Refining Boron Isotopic Measurements of Silicate Samples by Multi-Collector-Inductively Coupled Plasma-Mass Spectrometry (MC-ICP-MS)

AU - Paul, André N.

AU - Stewart, Joseph A.

AU - Agostini, Samuele

AU - Kirstein, Linda A.

AU - De Hoog, Jan C.M.

AU - Savov, Ivan P.

AU - Walowski, Kristina

AU - Rae, James W.B.

AU - Elliott, Tim

N1 - Funding Information: We thank Carolyn Taylor for support during laboratory work. We thank Chris Coath for technical support in mass spectrometry work and helpful discussion. We thank three anonymous reviewers for their comments and suggestions. We also thank Editor Prof. T. Meisel for his handling of the manuscript, constructive comments and suggestions. This study received support from the National Environmental Research Council grant NE/M000443/1 awarded to LK, Grant NE/N011716/1 to J.W.B.R., and IGG‐CNR grant P1600514 awarded to SA. There is no conflict of interest to declare by the authors. Open access funding provided by the Université de Genève. Publisher Copyright: © 2023 The Authors. Geostandards and Geoanalytical Research published by John Wiley & Sons Ltd on behalf of International Association of Geoanalysts.

PY - 2023/9/13

Y1 - 2023/9/13

N2 - Solution MC-ICP-MS is an established technique for high precision boron isotope measurement results (δ11BSRM 951) in carbonates, yet its application to silicate rocks has been limited. Impediments include volatilisation during silicate dissolution and contamination during chemical purification. To address this, we present a low-blank sample preparation procedure that couples hydrofluoric acid-digestion and low-temperature evaporation (mannitol-free), to an established MC-ICP-MS measurement procedure following chemical purification using B-specific Amberlite IRA 743 resin. We obtain accurate δ11BSRM 951 values (intermediate precision ±0.2?) for boric acid (BAM ERM-AE121 19.65 ±?0.14?) and carbonate (NIST RM 8301 (Coral) 24.24 ± 0.11?) reference materials. For silicate reference materials covering mafic to felsic compositions we obtain δ11BSRM 951 with intermediate precision < ±0.6? (2s), namely JB-2 6.9 ±?0.4?; IAEA-B-5 -6.0 ±?0.6?; IAEA-B-6 -3.9 ±?0.5? (2s). Furthermore, splits of these same reference materials were processed by an alternative fusion and purification procedure. We find excellent agreement between δ11BSRM 951 measurement results by MC-ICP-MS of the reference materials using both sample processing techniques. These measurement results show that our sample processing and MC-ICP-MS methods provide consistent δ11BSRM 951 values for low B-mass fraction samples. We present new data from Mid Ocean Ridge Basalt (MORB) glass, documenting a range in δ11BSRM 951 from -5.6 ± 0.3? to -8.8 ± 0.5? (2s), implying some upper mantle δ11BSRM 951 heterogeneity.

AB - Solution MC-ICP-MS is an established technique for high precision boron isotope measurement results (δ11BSRM 951) in carbonates, yet its application to silicate rocks has been limited. Impediments include volatilisation during silicate dissolution and contamination during chemical purification. To address this, we present a low-blank sample preparation procedure that couples hydrofluoric acid-digestion and low-temperature evaporation (mannitol-free), to an established MC-ICP-MS measurement procedure following chemical purification using B-specific Amberlite IRA 743 resin. We obtain accurate δ11BSRM 951 values (intermediate precision ±0.2?) for boric acid (BAM ERM-AE121 19.65 ±?0.14?) and carbonate (NIST RM 8301 (Coral) 24.24 ± 0.11?) reference materials. For silicate reference materials covering mafic to felsic compositions we obtain δ11BSRM 951 with intermediate precision < ±0.6? (2s), namely JB-2 6.9 ±?0.4?; IAEA-B-5 -6.0 ±?0.6?; IAEA-B-6 -3.9 ±?0.5? (2s). Furthermore, splits of these same reference materials were processed by an alternative fusion and purification procedure. We find excellent agreement between δ11BSRM 951 measurement results by MC-ICP-MS of the reference materials using both sample processing techniques. These measurement results show that our sample processing and MC-ICP-MS methods provide consistent δ11BSRM 951 values for low B-mass fraction samples. We present new data from Mid Ocean Ridge Basalt (MORB) glass, documenting a range in δ11BSRM 951 from -5.6 ± 0.3? to -8.8 ± 0.5? (2s), implying some upper mantle δ11BSRM 951 heterogeneity.

KW - δ11BSRM 951

KW - MORB volcanic glass

KW - OIB volcanic glass

KW - silicate reference materials

KW - MC-ICP-MS

KW - HF digestion

KW - boron isotopes

U2 - 10.1111/ggr.12527

DO - 10.1111/ggr.12527

M3 - Article (Academic Journal)

SN - 1639-4488

VL - n/a

JO - Geostandards and Geoanalytical Research

JF - Geostandards and Geoanalytical Research

IS - n/a

ER -

Refining Boron Isotopic Measurements of Silicate Samples by Multi-Collector-Inductively Coupled Plasma-Mass Spectrometry (MC-ICP-MS)

Abstract

Bibliographical note

Keywords

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