| Title: |
Interlaboratory Comparison of Branched GDGT Temperature and pH Proxies Using Soils and Lipid Extracts |
| Authors: |
De Jonge, Cindy; Peterse, Francien; Nierop, Klaas, G J; Blattmann, Thomas, M; Alexandre, Marcelo; Ansanay-Alex, Salome; Austin, Thomas; Babin, Mathieu; Bard, Edouard; Bauersachs, Thorsten; Blewett, Jerome; Boehman, Brenna; Castañeda, Isla, S; Chen, Junhui; Conti, Martina, L G; Contreras, Sergio; Cordes, Julia; Davtian, Nina; van Dongen, Bart; Duncan, Bella; Elling, Felix, J; Galy, Valier; Gao, Shaopeng; Hefter, Jens; Hinrichs, Kai‐Uwe; Helling, Mitchell, R; Hoorweg, Mariska; Hopmans, Ellen; Hou, Juzhi; Huang, Yongsong; Huguet, Arnaud; Jia, Guodong; Karger, Cornelia; Keely, Brendan, J; Kusch, Stephanie; Li, Hui; Liang, Jie; Lipp, Julius, S; Liu, Weiguo; Lu, Hongxuan; Mangelsdorf, Kai; Manners, Hayley; Martinez Garcia, Alfredo; Menot, Guillemette; Mollenhauer, Gesine; Naafs, B. David A.; Naeher, Sebastian; O'Connor, Lauren, K; Pearce, Ethan, M; Pearson, Ann; Rao, Zhiguo; Rodrigo‐Gámiz, Marta; Rosendahl, Chris; Rostek, Frauke; Bao, Rui; Sanyal, Prasanta; Schubotz, Florence; Scott, Wesley; Sen, Rahul; Sluijs, Appy; Smittenberg, Rienk; Stefanescu, Ioana; Sun, Jia; Sutton, Paul; Tierney, Jess; Tejos, Eduardo; Villanueva, Joan; Wang, Huanye; Werne, Josef; Yamamoto, Masanobu; Yang, Huan; Zhou, Aifeng |
| Contributors: |
Geological Institute ETH Zürich; Department of Earth Sciences Swiss Federal Institute of Technology - ETH Zürich (D-ERDW); Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich)-Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich); Department of Earth Sciences Utrecht; Universiteit Utrecht / Utrecht University Utrecht; Brown University; Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE); École normale supérieure de Lyon (ENS de Lyon); Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL); Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS); GNS Science Lower Hutt; GNS Science; Institut des Sciences de la MER de Rimouski (ISMER); Université du Québec à Rimouski (UQAR); Collège de France - Chaire Evolution du climat et de l'océan; Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE); Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE); Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE); Institute of Geosciences Kiel; Christian-Albrechts-Universität zu Kiel = Christian-Albrechts University of Kiel = Université Christian-Albrechts de Kiel (CAU); Harvard University; Woods Hole Oceanographic Institution (WHOI); University of Massachusetts Amherst (UMass Amherst); University of Massachusetts System (UMASS); First Institute of Oceanography Qingdao (FIO); Ministry of Natural Resources of China; Department of Chemistry York; University of York York, UK; Universidad Católica de la Santísima Concepción (UCSC); Center for Marine Environmental Sciences Bremen (MARUM); Universität Bremen Deutschland = University of Bremen Germany = Université de Brême Allemagne; Institut de Ciencia i Tecnologia Ambientals (ICTA); Universitat Autònoma de Barcelona = Autonomous University of Barcelona = Universidad Autónoma de Barcelona (UAB); Department of Earth and Environmental Sciences Manchester (EES); University of Manchester Manchester; Victoria University of Wellington; Chinese Academy of Sciences Beijing (CAS); Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI); Helmholtz-Gemeinschaft = Helmholtz Association; University of Wyoming (UW); Royal Netherlands Institute for Sea Research (NIOZ); Milieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols (METIS); École Pratique des Hautes Études (EPHE); Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); State Key Laboratory of Marine Geology Shanghai; Tongji University; German Research Centre for Geosciences - Helmholtz-Centre Potsdam (GFZ); Institute of Earth Environment Xi’an (IEE); Chinese Academy of Sciences Xi’an; Plymouth University; Max Planck Institute for Chemistry (MPIC); Max-Planck-Gesellschaft; School of Chemistry Bristol; University of Bristol Bristol; Hunan Normal University (HNU); Universidad de Granada = University of Granada (UGR); Ocean University of China (OUC); Indian Institute of Science Education and Research Kolbata (IISER Kolkata); University of Pittsburgh (PITT); Pennsylvania Commonwealth System of Higher Education (PCSHE); Department of Geological Sciences Stockholm University; Stockholm University; Department of Geology and Geophysics Laramie; Department of Geosciences University of Arizona; University of Arizona; Hokkaido University Sapporo, Japan; China University of Geosciences Wuhan (CUG); Lanzhou University |
| Source: |
EISSN: 1525-2027 ; Geochemistry, Geophysics, Geosystems ; https://hal.science/hal-04663147 ; Geochemistry, Geophysics, Geosystems, 2024, 25 (7), pp.e2024GC011583. ⟨10.1029/2024GC011583⟩ |
| Publisher Information: |
CCSD; AGU and the Geochemical Society |
| Publication Year: |
2024 |
| Collection: |
Université Jean Monnet – Saint-Etienne: HAL |
| Subject Terms: |
round robin; GDGT; interlaboratory comparison; [CHIM.ANAL]Chemical Sciences/Analytical chemistry; [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
| Description: |
International audience ; Ratios of glycerol dialkyl glycerol tetraethers (GDGT), which are membrane lipids of bacteria and archaea, are at the base of several paleoenvironmental proxies. They are frequently applied to soils as well as lake‐ and marine sediments to generate records of past temperature and soil pH. To derive meaningful environmental information from these reconstructions, high analytical reproducibility is required. Based on submitted results by 39 laboratories from across the world, which employ a diverse range of analytical and quantification methods, we explored the reproducibility of brGDGT‐based proxies (MBT′$_{5ME}$, IR, and #rings$_{tetra}$) measured on four soil samples and four soil lipid extracts. Correct identification and integration of 5‐ and 6‐methyl brGDGTs is a prerequisite for the robust calculation of proxy values, but this can be challenging as indicated by the large inter‐interlaboratory variation. The exclusion of statistical outliers improves the reproducibility, where the remaining uncertainty translates into a temperature offset from median proxy values of 0.3–0.9°C and a pH offset of 0.05–0.3. There is no apparent systematic impact of the extraction method and sample preparation steps on the brGDGT ratios. Although reported GDGT concentrations are generally consistent within laboratories, they vary greatly between laboratories. This large variability in brGDGT quantification may relate to variations in ionization efficiency or specific mass spectrometer settings possibly impacting the response of brGDGTs masses relative to that of the internal standard used. While ratio values of GDGT are generally comparable, quantities can currently not be compared between laboratories. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
https://doi.org/10.3929/ethz-b-000666016; WOS: 001271523200001 |
| DOI: |
10.1029/2024GC011583 |
| Availability: |
https://hal.science/hal-04663147; https://hal.science/hal-04663147v1/document; https://hal.science/hal-04663147v1/file/DeJonge_ggg_2024.pdf; https://doi.org/10.1029/2024GC011583 |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.F1034306 |
| Database: |
BASE |