An interlaboratory study of TEX86 and BIT analysis using high-performance liquid chromatography-mass spectrometry

Stefan Schouten, Ellen C. Hopmans, Jaap Van Der Meer, Anchelique Mets, Edouard Bard, Thomas S. Bianchi, Aaron Diefendorf, Marina Escala, Katharine H. Freeman, Yoshihiro Furukawa, Carme Huguet, Anitra Ingalls, Guillemette Ménot-Combes, Alexandra J. Nederbragt, Masahiro Oba, Ann Pearson, Emma J. Pearson, Antoni Rosell-Melé, Philippe Schaeffer, Sunita R. ShahTimothy M. Shanahan, Richard W. Smith, Rienk Smittenberg, Helen M. Talbot, Masao Uchida, Benjamin A.S. Van Mooy, Masanobu Yamamoto, Zhaohui Zhang, Jaap S.Sinninghe Damsté

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

Recently, two new proxies based on the distribution of glycerol dialkyl glycerol tetraethers (GDGTs) were proposed, i.e., the TEX86 proxy for sea surface temperature reconstructions and the BIT index for reconstructing soil organic matter input to the ocean. In this study, fifteen laboratories participated in a round robin study of two sediment extracts with a range of TEX86 and BIT values to test the analytical reproducibility and repeatability in analyzing these proxies. For TEX86 the repeatability, indicating intralaboratory variation, was 0.028 and 0.017 for the two sediment extracts or ±1-2°C when translated to temperature. The reproducibility, indicating among-laboratory variation, of TEX86 measurements was substantially higher, i.e., 0.050 and 0.067 or 7plusmn;3-4°C when translated to temperature. The latter values are higher than those obtained in round robin studies of Mg/Ca and U κ′ 37 paleothermometers, suggesting the need to primarily improve compatibility between labs. The repeatability of BIT measurements for the sediment with substantial amounts of soil organic matter input was relatively small, 0.029, but reproducibility was large, 0.410. This large variance could not be attributed to specific equipment used or a particular data treatment. We suggest that this may be caused by the large difference in the molecular weight in the GDGTs used in the BIT index, i.e., crenarchaeol versus the branched GDGTs. Potentially, this difference gives rise to variable responses in the different mass spectrometers used. Calibration using authentic standards is needed to establish compatibility between labs performing BIT measurements.

Original languageEnglish (US)
Article numberQ03012
JournalGeochemistry, Geophysics, Geosystems
Volume10
Issue number3
DOIs
StatePublished - Mar 2009

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liquid chromatography
High performance liquid chromatography
glycerols
Glycerol
Mass spectrometry
mass spectroscopy
mass spectrometry
soil organic matter
sediment
Sediments
sediments
Biological materials
compatibility
soils
spectrometer
sea surface temperature
temperature
calibration
Soils
ocean

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

Cite this

Schouten, S., Hopmans, E. C., Van Der Meer, J., Mets, A., Bard, E., Bianchi, T. S., ... Damsté, J. S. S. (2009). An interlaboratory study of TEX86 and BIT analysis using high-performance liquid chromatography-mass spectrometry. Geochemistry, Geophysics, Geosystems, 10(3), [Q03012]. https://doi.org/10.1029/2008GC002221
Schouten, Stefan ; Hopmans, Ellen C. ; Van Der Meer, Jaap ; Mets, Anchelique ; Bard, Edouard ; Bianchi, Thomas S. ; Diefendorf, Aaron ; Escala, Marina ; Freeman, Katharine H. ; Furukawa, Yoshihiro ; Huguet, Carme ; Ingalls, Anitra ; Ménot-Combes, Guillemette ; Nederbragt, Alexandra J. ; Oba, Masahiro ; Pearson, Ann ; Pearson, Emma J. ; Rosell-Melé, Antoni ; Schaeffer, Philippe ; Shah, Sunita R. ; Shanahan, Timothy M. ; Smith, Richard W. ; Smittenberg, Rienk ; Talbot, Helen M. ; Uchida, Masao ; Van Mooy, Benjamin A.S. ; Yamamoto, Masanobu ; Zhang, Zhaohui ; Damsté, Jaap S.Sinninghe. / An interlaboratory study of TEX86 and BIT analysis using high-performance liquid chromatography-mass spectrometry. In: Geochemistry, Geophysics, Geosystems. 2009 ; Vol. 10, No. 3.
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abstract = "Recently, two new proxies based on the distribution of glycerol dialkyl glycerol tetraethers (GDGTs) were proposed, i.e., the TEX86 proxy for sea surface temperature reconstructions and the BIT index for reconstructing soil organic matter input to the ocean. In this study, fifteen laboratories participated in a round robin study of two sediment extracts with a range of TEX86 and BIT values to test the analytical reproducibility and repeatability in analyzing these proxies. For TEX86 the repeatability, indicating intralaboratory variation, was 0.028 and 0.017 for the two sediment extracts or ±1-2°C when translated to temperature. The reproducibility, indicating among-laboratory variation, of TEX86 measurements was substantially higher, i.e., 0.050 and 0.067 or 7plusmn;3-4°C when translated to temperature. The latter values are higher than those obtained in round robin studies of Mg/Ca and U κ′ 37 paleothermometers, suggesting the need to primarily improve compatibility between labs. The repeatability of BIT measurements for the sediment with substantial amounts of soil organic matter input was relatively small, 0.029, but reproducibility was large, 0.410. This large variance could not be attributed to specific equipment used or a particular data treatment. We suggest that this may be caused by the large difference in the molecular weight in the GDGTs used in the BIT index, i.e., crenarchaeol versus the branched GDGTs. Potentially, this difference gives rise to variable responses in the different mass spectrometers used. Calibration using authentic standards is needed to establish compatibility between labs performing BIT measurements.",
author = "Stefan Schouten and Hopmans, {Ellen C.} and {Van Der Meer}, Jaap and Anchelique Mets and Edouard Bard and Bianchi, {Thomas S.} and Aaron Diefendorf and Marina Escala and Freeman, {Katharine H.} and Yoshihiro Furukawa and Carme Huguet and Anitra Ingalls and Guillemette M{\'e}not-Combes and Nederbragt, {Alexandra J.} and Masahiro Oba and Ann Pearson and Pearson, {Emma J.} and Antoni Rosell-Mel{\'e} and Philippe Schaeffer and Shah, {Sunita R.} and Shanahan, {Timothy M.} and Smith, {Richard W.} and Rienk Smittenberg and Talbot, {Helen M.} and Masao Uchida and {Van Mooy}, {Benjamin A.S.} and Masanobu Yamamoto and Zhaohui Zhang and Damst{\'e}, {Jaap S.Sinninghe}",
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Schouten, S, Hopmans, EC, Van Der Meer, J, Mets, A, Bard, E, Bianchi, TS, Diefendorf, A, Escala, M, Freeman, KH, Furukawa, Y, Huguet, C, Ingalls, A, Ménot-Combes, G, Nederbragt, AJ, Oba, M, Pearson, A, Pearson, EJ, Rosell-Melé, A, Schaeffer, P, Shah, SR, Shanahan, TM, Smith, RW, Smittenberg, R, Talbot, HM, Uchida, M, Van Mooy, BAS, Yamamoto, M, Zhang, Z & Damsté, JSS 2009, 'An interlaboratory study of TEX86 and BIT analysis using high-performance liquid chromatography-mass spectrometry', Geochemistry, Geophysics, Geosystems, vol. 10, no. 3, Q03012. https://doi.org/10.1029/2008GC002221

An interlaboratory study of TEX86 and BIT analysis using high-performance liquid chromatography-mass spectrometry. / Schouten, Stefan; Hopmans, Ellen C.; Van Der Meer, Jaap; Mets, Anchelique; Bard, Edouard; Bianchi, Thomas S.; Diefendorf, Aaron; Escala, Marina; Freeman, Katharine H.; Furukawa, Yoshihiro; Huguet, Carme; Ingalls, Anitra; Ménot-Combes, Guillemette; Nederbragt, Alexandra J.; Oba, Masahiro; Pearson, Ann; Pearson, Emma J.; Rosell-Melé, Antoni; Schaeffer, Philippe; Shah, Sunita R.; Shanahan, Timothy M.; Smith, Richard W.; Smittenberg, Rienk; Talbot, Helen M.; Uchida, Masao; Van Mooy, Benjamin A.S.; Yamamoto, Masanobu; Zhang, Zhaohui; Damsté, Jaap S.Sinninghe.

In: Geochemistry, Geophysics, Geosystems, Vol. 10, No. 3, Q03012, 03.2009.

Research output: Contribution to journalArticle

TY - JOUR

T1 - An interlaboratory study of TEX86 and BIT analysis using high-performance liquid chromatography-mass spectrometry

AU - Schouten, Stefan

AU - Hopmans, Ellen C.

AU - Van Der Meer, Jaap

AU - Mets, Anchelique

AU - Bard, Edouard

AU - Bianchi, Thomas S.

AU - Diefendorf, Aaron

AU - Escala, Marina

AU - Freeman, Katharine H.

AU - Furukawa, Yoshihiro

AU - Huguet, Carme

AU - Ingalls, Anitra

AU - Ménot-Combes, Guillemette

AU - Nederbragt, Alexandra J.

AU - Oba, Masahiro

AU - Pearson, Ann

AU - Pearson, Emma J.

AU - Rosell-Melé, Antoni

AU - Schaeffer, Philippe

AU - Shah, Sunita R.

AU - Shanahan, Timothy M.

AU - Smith, Richard W.

AU - Smittenberg, Rienk

AU - Talbot, Helen M.

AU - Uchida, Masao

AU - Van Mooy, Benjamin A.S.

AU - Yamamoto, Masanobu

AU - Zhang, Zhaohui

AU - Damsté, Jaap S.Sinninghe

PY - 2009/3

Y1 - 2009/3

N2 - Recently, two new proxies based on the distribution of glycerol dialkyl glycerol tetraethers (GDGTs) were proposed, i.e., the TEX86 proxy for sea surface temperature reconstructions and the BIT index for reconstructing soil organic matter input to the ocean. In this study, fifteen laboratories participated in a round robin study of two sediment extracts with a range of TEX86 and BIT values to test the analytical reproducibility and repeatability in analyzing these proxies. For TEX86 the repeatability, indicating intralaboratory variation, was 0.028 and 0.017 for the two sediment extracts or ±1-2°C when translated to temperature. The reproducibility, indicating among-laboratory variation, of TEX86 measurements was substantially higher, i.e., 0.050 and 0.067 or 7plusmn;3-4°C when translated to temperature. The latter values are higher than those obtained in round robin studies of Mg/Ca and U κ′ 37 paleothermometers, suggesting the need to primarily improve compatibility between labs. The repeatability of BIT measurements for the sediment with substantial amounts of soil organic matter input was relatively small, 0.029, but reproducibility was large, 0.410. This large variance could not be attributed to specific equipment used or a particular data treatment. We suggest that this may be caused by the large difference in the molecular weight in the GDGTs used in the BIT index, i.e., crenarchaeol versus the branched GDGTs. Potentially, this difference gives rise to variable responses in the different mass spectrometers used. Calibration using authentic standards is needed to establish compatibility between labs performing BIT measurements.

AB - Recently, two new proxies based on the distribution of glycerol dialkyl glycerol tetraethers (GDGTs) were proposed, i.e., the TEX86 proxy for sea surface temperature reconstructions and the BIT index for reconstructing soil organic matter input to the ocean. In this study, fifteen laboratories participated in a round robin study of two sediment extracts with a range of TEX86 and BIT values to test the analytical reproducibility and repeatability in analyzing these proxies. For TEX86 the repeatability, indicating intralaboratory variation, was 0.028 and 0.017 for the two sediment extracts or ±1-2°C when translated to temperature. The reproducibility, indicating among-laboratory variation, of TEX86 measurements was substantially higher, i.e., 0.050 and 0.067 or 7plusmn;3-4°C when translated to temperature. The latter values are higher than those obtained in round robin studies of Mg/Ca and U κ′ 37 paleothermometers, suggesting the need to primarily improve compatibility between labs. The repeatability of BIT measurements for the sediment with substantial amounts of soil organic matter input was relatively small, 0.029, but reproducibility was large, 0.410. This large variance could not be attributed to specific equipment used or a particular data treatment. We suggest that this may be caused by the large difference in the molecular weight in the GDGTs used in the BIT index, i.e., crenarchaeol versus the branched GDGTs. Potentially, this difference gives rise to variable responses in the different mass spectrometers used. Calibration using authentic standards is needed to establish compatibility between labs performing BIT measurements.

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U2 - 10.1029/2008GC002221

DO - 10.1029/2008GC002221

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