Interlaboratory comparison of magnesium isotopiccompositions of 12 felsic to ultramafic igneous rockstandards analyzed by MC-ICPMS

Fang-Zhen  Teng; Qing-Zhu  Yin; Clemens Vinzenz Ullmann; Ramananda  Chakrabarti; Philip A.E. Pogge von Strandmann; Wei Yang; Wang-Ye  Li; Shan  Ke; Fatemeh  Sedaghatpour; Joshua  Wimpenny; Anette  Meixner; Rolf L. Romer; Uwe Wiechert; Srein H. Jacobsen

doi:10.1002/2015gc005939

Interlaboratory comparison of magnesium isotopiccompositions of 12 felsic to ultramafic igneous rockstandards analyzed by MC-ICPMS

Fang-Zhen Teng, Qing-Zhu Yin, Clemens Vinzenz Ullmann, Ramananda Chakrabarti, Philip A.E. Pogge von Strandmann, Wei Yang, Wang-Ye Li, Shan Ke, Fatemeh Sedaghatpour, Joshua Wimpenny, Anette Meixner, Rolf L. Romer, Uwe Wiechert, Srein H. Jacobsen

Geology

27 Citations (Scopus)

Abstract

To evaluate the interlaboratory mass bias for high-precision stable Mg isotopic analysis of natural materials, a suite of silicate standards ranging in composition from felsic to ultramafic were analyzed in five laboratories by using three types of multicollector inductively coupled plasma mass spectrometer (MC-ICPMS). Magnesium isotopic compositions from all labs are in agreement for most rocks within quoted uncertainties but are significantly (up to 0.3‰ in ²⁶Mg/²⁴Mg, >4 times of uncertainties) different for some mafic samples. The interlaboratory mass bias does not correlate with matrix element/Mg ratios, and the mechanism for producing it is uncertain but very likely arises from column chemistry. Our results suggest that standards with different matrices are needed to calibrate the efficiency of column chemistry and caution should be taken when dealing with samples with complicated matrices. Well-calibrated standards with matrix elements matching samples should be used to reduce the interlaboratory mass bias.

Original language	English
Journal	Geochemistry, Geophysics, Geosystems
Volume	16
Pages (from-to)	3197–3209
ISSN	1525-2027
DOIs	https://doi.org/10.1002/2015gc005939
Publication status	Published - 1 Sept 2015

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Teng, F-Z., Yin, Q-Z., Ullmann, C. V., Chakrabarti, R., Pogge von Strandmann, P. A. E., Yang, W., Li, W-Y., Ke, S., Sedaghatpour, F., Wimpenny, J., Meixner, A., Romer, R. L., Wiechert, U., & Jacobsen, S. H. (2015). Interlaboratory comparison of magnesium isotopiccompositions of 12 felsic to ultramafic igneous rockstandards analyzed by MC-ICPMS. Geochemistry, Geophysics, Geosystems, 16, 3197–3209. https://doi.org/10.1002/2015gc005939

Teng, F-Z, Yin, Q-Z, Ullmann, CV, Chakrabarti, R, Pogge von Strandmann, PAE, Yang, W, Li, W-Y, Ke, S, Sedaghatpour, F, Wimpenny, J, Meixner, A, Romer, RL, Wiechert, U & Jacobsen, SH 2015, 'Interlaboratory comparison of magnesium isotopiccompositions of 12 felsic to ultramafic igneous rockstandards analyzed by MC-ICPMS', Geochemistry, Geophysics, Geosystems, vol. 16, pp. 3197–3209. https://doi.org/10.1002/2015gc005939

@article{34b543b6dbdf447f9688488349c4d021,

title = "Interlaboratory comparison of magnesium isotopiccompositions of 12 felsic to ultramafic igneous rockstandards analyzed by MC-ICPMS",

abstract = "To evaluate the interlaboratory mass bias for high-precision stable Mg isotopic analysis of natural materials, a suite of silicate standards ranging in composition from felsic to ultramafic were analyzed in five laboratories by using three types of multicollector inductively coupled plasma mass spectrometer (MC-ICPMS). Magnesium isotopic compositions from all labs are in agreement for most rocks within quoted uncertainties but are significantly (up to 0.3‰ in 26Mg/24Mg, >4 times of uncertainties) different for some mafic samples. The interlaboratory mass bias does not correlate with matrix element/Mg ratios, and the mechanism for producing it is uncertain but very likely arises from column chemistry. Our results suggest that standards with different matrices are needed to calibrate the efficiency of column chemistry and caution should be taken when dealing with samples with complicated matrices. Well-calibrated standards with matrix elements matching samples should be used to reduce the interlaboratory mass bias.",

author = "Fang-Zhen Teng and Qing-Zhu Yin and Ullmann, {Clemens Vinzenz} and Ramananda Chakrabarti and {Pogge von Strandmann}, {Philip A.E.} and Wei Yang and Wang-Ye Li and Shan Ke and Fatemeh Sedaghatpour and Joshua Wimpenny and Anette Meixner and Romer, {Rolf L.} and Uwe Wiechert and Jacobsen, {Srein H.}",

year = "2015",

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doi = "10.1002/2015gc005939",

language = "English",

volume = "16",

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journal = "Geochemistry, Geophysics, Geosystems",

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TY - JOUR

T1 - Interlaboratory comparison of magnesium isotopiccompositions of 12 felsic to ultramafic igneous rockstandards analyzed by MC-ICPMS

AU - Teng, Fang-Zhen

AU - Yin, Qing-Zhu

AU - Ullmann, Clemens Vinzenz

AU - Chakrabarti, Ramananda

AU - Pogge von Strandmann, Philip A.E.

AU - Yang, Wei

AU - Li, Wang-Ye

AU - Ke, Shan

AU - Sedaghatpour, Fatemeh

AU - Wimpenny, Joshua

AU - Meixner, Anette

AU - Romer, Rolf L.

AU - Wiechert, Uwe

AU - Jacobsen, Srein H.

PY - 2015/9/1

Y1 - 2015/9/1

N2 - To evaluate the interlaboratory mass bias for high-precision stable Mg isotopic analysis of natural materials, a suite of silicate standards ranging in composition from felsic to ultramafic were analyzed in five laboratories by using three types of multicollector inductively coupled plasma mass spectrometer (MC-ICPMS). Magnesium isotopic compositions from all labs are in agreement for most rocks within quoted uncertainties but are significantly (up to 0.3‰ in 26Mg/24Mg, >4 times of uncertainties) different for some mafic samples. The interlaboratory mass bias does not correlate with matrix element/Mg ratios, and the mechanism for producing it is uncertain but very likely arises from column chemistry. Our results suggest that standards with different matrices are needed to calibrate the efficiency of column chemistry and caution should be taken when dealing with samples with complicated matrices. Well-calibrated standards with matrix elements matching samples should be used to reduce the interlaboratory mass bias.

AB - To evaluate the interlaboratory mass bias for high-precision stable Mg isotopic analysis of natural materials, a suite of silicate standards ranging in composition from felsic to ultramafic were analyzed in five laboratories by using three types of multicollector inductively coupled plasma mass spectrometer (MC-ICPMS). Magnesium isotopic compositions from all labs are in agreement for most rocks within quoted uncertainties but are significantly (up to 0.3‰ in 26Mg/24Mg, >4 times of uncertainties) different for some mafic samples. The interlaboratory mass bias does not correlate with matrix element/Mg ratios, and the mechanism for producing it is uncertain but very likely arises from column chemistry. Our results suggest that standards with different matrices are needed to calibrate the efficiency of column chemistry and caution should be taken when dealing with samples with complicated matrices. Well-calibrated standards with matrix elements matching samples should be used to reduce the interlaboratory mass bias.

U2 - 10.1002/2015gc005939

DO - 10.1002/2015gc005939

M3 - Journal article

SN - 1525-2027

VL - 16

SP - 3197

EP - 3209

JO - Geochemistry, Geophysics, Geosystems

JF - Geochemistry, Geophysics, Geosystems

ER -

Interlaboratory comparison of magnesium isotopiccompositions of 12 felsic to ultramafic igneous rockstandards analyzed by MC-ICPMS

Abstract

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