Isotope analysis of strontium by multicollector inductively-coupled plasma mass spectrometry: High-precision combined measurement of 88Sr/86Sr and 87Sr/86Sr isotope ratios

Kramchaninov, A. Yu.; Чернышев, И. В.; Шатагин, К. Н.

doi:10.1134/s1061934812140067

Cited by 21 publications

(12 citation statements)

References 18 publications

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“…) and Sr (Kramchaninov et al . ), are identical within analytical uncertainties. This is in accordance with the Ba isotope data of BHVO‐1/‐2, JB‐1/‐2 and JA‐1/‐2 presented in Nan et al .…”

Section: Resultsmentioning

confidence: 67%

Barium Isotopic Compositions of Geological Reference Materials

Zuilen

Nägler

Bullen

2016

Geostandard Geoanalytic Res

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The interest in variations of barium (Ba) stable isotope amount ratios in low and high temperature environments has increased over the past several years. Characterisation of Ba isotope ratios of widely available reference materials is now required to validate analytical procedures and to allow comparison of data obtained by different laboratories. We present new Ba isotope amount ratio data for twelve geological reference materials with silicate (AGV‐1, G‐2, BHVO‐1, QLO‐1, BIR‐1, JG‐1a, JB‐1a, JR‐1 and JA‐1), carbonate (IAEA‐CO‐9) and sulfate matrices (IAEA‐SO‐5 and IAEA‐SO‐6) relative to NIST SRM 3104a. In addition, two artificially fractionated in‐house reference materials BaBe12 and BaBe27 (δ137/134Ba = −1.161 ± 0.049‰ and −0.616 ± 0.050‰, respectively) are used as quality control solutions for the negative δ‐range. Accuracy of our data was assessed by interlaboratory comparison between the University of Bern and the United States Geological Survey (USGS). Data were measured by MC‐ICP‐MS (Bern) and TIMS (USGS) using two different double spikes for mass bias correction (130Ba–135Ba and 132Ba–136Ba, respectively). MC‐ICP‐MS measurements were further tested for isobaric and non‐spectral matrix effects by a number of common matrix elements. The results are in excellent agreement and suggest data accuracy.

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Section: Resultsmentioning

confidence: 67%

Barium Isotopic Compositions of Geological Reference Materials

Zuilen

Nägler

Bullen

2016

Geostandard Geoanalytic Res

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“…Our initial tests with this method revealed that at least 100 ppb of Zr was required for accurate and precise 91 Zr/ 90 Zr determinations. Results from the Zr spiking test (supporting information Table S4) confirms that the levels of Zr commonly used to measure mass‐dependent fractionation of Sr isotopes [ Kramchaninov et al ., ; Ohno and Hirata , ] does not adversely impact the accuracy and precision of 87 Sr/ 86 Sr determinations (Figure ).…”

Section: Resultsmentioning

confidence: 98%

“…We further constrained mass discrimination by sample‐standard bracketing with SRM987, similar to the approach of Kramchaninov et al . []. The bracketing standard was not doped with Ba.…”

Section: Methodsmentioning

confidence: 99%

Accuracy and precision of ⁸⁸Sr/⁸⁶Sr and ⁸⁷Sr/⁸⁶Sr measurements by MC‐ICPMS compromised by high barium concentrations

Scher

Griffith

Buckley

2014

Geochem Geophys Geosyst

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Barite (BaSO 4 ) is a widely distributed mineral that incorporates strontium (Sr) during formation.Mass-dependent fractionation of Sr isotopes occurs during abiotic precipitation of barite and formation of barite associated with biological processes (e.g., bacterial sulfide oxidation). Sr isotopes in barite can provide provenance information as well as potentially reconstruct sample formation conditions (e.g., saturation state, temperature, biotic versus abiotic). An updated extraction chromatography method tested with barite and Ba-doped seawater produces Sr sample solutions containing 10-100 ppb levels of Ba.

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“…Isobaric interference corrections were made assuming natural isotope ratios of Kr and Rb (i.e., 83 Kr/ 84 Kr = 0.20175; 83 Kr/ 86 Kr = 0.66474; 85 Rb/ 87 Rb = 2.59231) and correcting these ratios for mass bias using an exponential law with 86 Sr/ 88 Sr = 0.1194 as the reference ratio. A sample standard bracketing technique was used in order to further constrain mass bias during analyses, which improved the reproducibility of the measurements (e.g., Kramchaninov et al, 2012;Scher et al, 2014).…”

Section: Mass Spectrometrymentioning

confidence: 99%

Controls on stable Sr-isotope fractionation in continental barite

et al. 2015

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Barite precipitation typically occurs when barium rich fluids mix with sulfate rich fluids, however barite found in the modern continental environment suggests that biological activity can play an important role in barite formation by oxidizing sulfur and/or concentrating barium within microenvironments. These activities induce barite precipitation, and carry with them implications for studies of barite genesis. Strontium (Sr) is incorporated into the barite crystal structure during barite formation preserving a radiogenic and stable Sr-isotope signature in barite, providing information about its formation. Here we present Sr-isotope results from three artesian sulfidic springs with ongoing barite precipitation (Zodletone Spring, Oklahoma; Stinking Spring, Utah; and Doughty Springs, Colorado) to explore the controls on stable Sr-isotope fractionation during barite precipitation in a continental setting. Apparent stable Sr-isotope fractionation for all three sites ranged from −0.6‰ to~0.0‰ similar to previously published calculated values for equilibrium conditions and measured values of synthetic barite. However, clear relationships do not exist between water and barite chemistry in the natural systems, indicating that barite does not precipitate directly from solution, but heterogeneously within diverse microenvironments created by microbial biomass or on sediment surfaces. The dynamic microenvironments in a continental setting influence the apparent stable Sr-isotope fractionation during barite precipitation because of changing saturation conditions, Sr concentration and/or precipitation of different mineral phases (e.g., celestine). In order to better understand the geochemistry of barite deposits, future work is necessary to study the controls on radiogenic and stable Sr-isotope signatures of barite in the context of the temporally and spatially dynamic nature of the continental setting.

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Isotope analysis of strontium by multicollector inductively-coupled plasma mass spectrometry: High-precision combined measurement of 88Sr/86Sr and 87Sr/86Sr isotope ratios

Cited by 21 publications

References 18 publications

Barium Isotopic Compositions of Geological Reference Materials

Barium Isotopic Compositions of Geological Reference Materials

Accuracy and precision of ⁸⁸Sr/⁸⁶Sr and ⁸⁷Sr/⁸⁶Sr measurements by MC‐ICPMS compromised by high barium concentrations

Controls on stable Sr-isotope fractionation in continental barite

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Isotope analysis of strontium by multicollector inductively-coupled plasma mass spectrometry: High-precision combined measurement of 88Sr/86Sr and 87Sr/86Sr isotope ratios

Cited by 21 publications

References 18 publications

Barium Isotopic Compositions of Geological Reference Materials

Barium Isotopic Compositions of Geological Reference Materials

Accuracy and precision of 88Sr/86Sr and 87Sr/86Sr measurements by MC‐ICPMS compromised by high barium concentrations

Controls on stable Sr-isotope fractionation in continental barite

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Accuracy and precision of ⁸⁸Sr/⁸⁶Sr and ⁸⁷Sr/⁸⁶Sr measurements by MC‐ICPMS compromised by high barium concentrations