Measurement on high-precision boron isotope of silicate materials by a single column purification method and MC-ICP-MS

Wei, Gangjian; Wei, JingXian; Liu, Ying; Tang, Ke; Zhongyuan, Ren; Ma, Jun; Xu, Yi–Gang

doi:10.1039/c3ja30333k

Cited by 74 publications

(23 citation statements)

References 23 publications

(64 reference statements)

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“…The preparation of the silicate samples follows procedures adapted from Wei et al 33 The samples were dissolved in 24 M HF and mannitol. Boron was then isolated from the silicate matrix by ionexchange chromatography using columns containing 80 μL of AG MP-1 M anion-exchange resin (Bio-Rad Laboratories, Hercules, CA, USA).…”

Section: Silicate Reference Materialsmentioning

confidence: 99%

The effect of matrix interferences on in situ boron isotope analysis by laser ablation multi‐collector inductively coupled plasma mass spectrometry

Standish

Chalk

Babila

et al. 2019

Rapid Comm Mass Spectrometry

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Rationale Boron isotope analysis of marine carbonates by laser ablation multi‐collector inductively coupled plasma mass spectrometry (LA‐MC‐ICP‐MS) offers the potential for rapid sample throughput, and the means to examine micron‐scale variations in the δ11B signatures of fossil skeletons and shells/tests of marine organisms. Existing studies demonstrate an acceptable level of reproducibility is achievable, but also typically show a level of accuracy outside the limits required by most applications. Here we investigate matrix interference effects as a cause of inaccuracy and imprecision. Methods Analyses were performed on a standard format Thermo Scientific Neptune Plus MC‐ICP mass spectrometer coupled to a New Wave Research 193 nm ArF laser ablation system. The effects of matrix interference on δ11B analysis were investigated through analyses of a set of reference materials with differing B/Ca ratios. Three approaches to correct for matrix‐induced effects were trialled: (1) use of matrix‐matched standards, (2) utilisation of the relationship between δ11B inaccuracy and11B/43Ca, 11B/40ArCa4+ or 11B/Cainterference from three reference materials with known δ11B values and varying B/Ca ratios, and (3) direct characterisation of the (sloping) interference itself. Results Matrix interference from scattered Ca ions on 10B can impede both the accuracy and the reproducibility of δ11B analysis by LA‐MC‐ICP‐MS. Based on analyses of two in‐house reference materials, deep sea coral PS69/3181 and inorganic calcite UWC‐1, we find approach 2, following the 11B/Cainterference relationship, gives the best mean accuracies (within 0.4‰ of solution values) and external reproducibilities (± 0.5‰ 2 SD for PS69/3181). This approach has been applied to analyses of an annual growth cycle of a Siderastrea siderea coral and eight Cibicidoides wuellerstorfi benthic foraminifera. Both coral and foraminifera data match solution MC‐ICP‐MS analyses within reported uncertainties. Conclusions LA‐MC‐ICP‐MS can produce accurate and precise δ11B data to a 0.5‰ (2σ) level on <0.3 ng B after correction for Ca interference effects.

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Section: Silicate Reference Materialsmentioning

confidence: 99%

The effect of matrix interferences on in situ boron isotope analysis by laser ablation multi‐collector inductively coupled plasma mass spectrometry

Standish

Chalk

Babila

et al. 2019

Rapid Comm Mass Spectrometry

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“…Before powdered whole-rock samples of Dananhu volcanic rocks were used to determine the B contents and isotopic compositions, a 2 M HCl leaching for 5 h was performed to exclude contamination of posteruption alteration following the procedure of Tanaka and Nakamura [2005]. The B concentration of these samples was measured by ICP-atomic emission spectrometry at GIGCAS following the methods of Wei et al [2013]. Boron concentration data have uncertainties of~AE10% (1σ).…”

Section: Methodsmentioning

confidence: 99%

“…Boron concentration data have uncertainties of~AE10% (1σ). Boron isotopes were determined with splits of the same samples used for B concentration measurements following the procedure of Wei et al [2013], by digestion of powdered whole-rock samples in HF, purification by ion exchange, and analysis by MC-ICP-MS at GIGCAS. Boron isotopic compositions are reported as δ 11 B, the per mil deviation of 11 B/ 10 B from that of SRM 951 boric acid.…”

Section: Methodsmentioning

confidence: 99%

B isotopes of Carboniferous‐Permian volcanic rocks in the Tuha basin mirror a transition from subduction to intraplate setting in Central Asian Orogenic Belt

Liu

Wei

et al. 2016

JGR Solid Earth

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Controversies remain as to the Permian tectonic setting in the Central Asian Orogenic Belt (CAOB), in particular, regarding the triggering of Permian magmatism. To address this issue, we carried out a geochemical study on Dananhu volcanics from the Tuha basin, southwestern CAOB. 40Ar/39Ar analyses for feldspar separates yield a Carboniferous age of 321.2 ± 9.8 Ma for the andesites and a Permian age of 278.9 ± 4.2 Ma for the basalts. Both the andesites and basalts geochemically resemble subduction‐related magmas in aspects of their trace element and Sr‐Nd‐Pb isotopic composition, but they may differ in petrogenesis. The andesites are typical adakites. Their high Cr and Ni contents, and low heavy rare earth element contents, and positive correlation between B/Nb ratios and δ11B values suggest that they were generated by interaction between slab‐derived melts/fluids and the mantle wedge. The Permian basalts are subdivided into two subgroups: alkali and tholeiitic basalts. High Ba/La and Ba/Zr ratios indicate that the source of the alkali basalts has been metasomatized by fluids/melts derived from altered oceanic crust. In contrast, a volatile‐free source metasomatized by sediment‐derived fluids/melts is inferred for the tholeiitic basalts given their high Th/Zr and Th/Ce ratios. Negative correlation between B/Nb and δ11B for the Permian basalts imply that the arc signatures were imposed by previous subduction events, and no direct slab‐derived fluids/melts participated in their petrogenesis. These geochemical characteristics alongside regional geologic records collectively suggest a tectonic shift in the southwestern CAOB from subduction‐related setting during the Late Carboniferous to an intraplate setting during the Early Permian.

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“…13,14 Over the past two decades, multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS) has become the most common approach for B isotopic analysis, owing to its high ionization efficiency, stable instrumental mass bias, fast routine analyses, and high precision ( HF, ammonia, mannitol, water) were also adopted to minimize the B memory effect. [18][19][20][21][22][23][24][25][26][27][28][29][30][31] These efforts all have drawbacks as they require a specialized sample introduction system or the use of toxic chemicals. The sample introduction system is critical for obtaining highprecision B isotopic measurements because it affects the ionization efficiency and instrumental mass fractionation.…”

Section: Introductionmentioning

confidence: 99%

Fast and precise boron isotopic analysis of carbonates and seawater using Nu Plasma II multi‐collector inductively coupled plasma mass spectrometry and a simple sample introduction system

Chen

Teng

Catling

2019

Rapid Comm Mass Spectrometry

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Rationale:The boron (B) isotopic composition in marine carbonates provides important insights into paleoclimate reconstruction and biomineralization. However, precise and accurate measurements of B isotopes using plasma-based mass spectrometry is difficult due to the volatile nature of B, which typically requires complex and more specialized sample introduction systems. Existing analytical protocols have mostly been based on Thermo Scientific Neptune Plus multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS) instruments, whereas methods based on Nu Plasma mass spectrometers are scarce. Methods:We have developed a simplified analytical protocol using Nu Plasma II MC-ICPMS with standard glass sample introduction systems. Boron extraction and purification were conducted using a two-stage column chemistry with cationexchange and Amberlite IRA 743 B-specific resin. A sample drying step was avoided, which allows for direct isotopic analysis after column chemistry. A wet plasma mode with a standard glass cyclonic spray chamber and a glass nebulizer was used instead of a more specialized perfluoroalkoxy (PFA) sample introduction system. Low residual B signals were achieved with a relatively short period of wash-out with 0.5 N HNO 3 . Results:The external precision is better than 0.30‰ (2SD) calculated from the longterm bracketing standard, NIST SRM 951a. The overall robustness of the method was demonstrated by measurements of the international carbonate standard JCp-1 (δ 11 B = +24.49 ± 0.36‰, 2SD) and seawater (δ 11 B = +39.98 ± 0.35‰), which are consistent with reported values. Conclusions:Our method provides an alternative approach for B isotope analysis using a routine wet plasma MC-ICPMS setup that can facilitate geochemical and environmental application of B isotopes.

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Measurement on high-precision boron isotope of silicate materials by a single column purification method and MC-ICP-MS

Abstract: A method with simplified chemical treatment has developed to determine high-precision d

Cited by 74 publications

References 23 publications

The effect of matrix interferences on in situ boron isotope analysis by laser ablation multi‐collector inductively coupled plasma mass spectrometry

The effect of matrix interferences on in situ boron isotope analysis by laser ablation multi‐collector inductively coupled plasma mass spectrometry

B isotopes of Carboniferous‐Permian volcanic rocks in the Tuha basin mirror a transition from subduction to intraplate setting in Central Asian Orogenic Belt

Fast and precise boron isotopic analysis of carbonates and seawater using Nu Plasma II multi‐collector inductively coupled plasma mass spectrometry and a simple sample introduction system

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