Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 Lane Christine S csl44@cam.ac.uk 0000-0001-9206-3903 Hoek Wim Z W.Z.Hoek@uu.nl 0000-0001-7313-100X Baneschi Ilaria ilaria.baneschi@igg.cnr.it Bouwman Annerieke anneriekebouwman@hotmail.com Brogan Eilis eilis.m.b@hotmail.co.uk Ramsey Christopher Bronk christopher.ramsey@arch.ox.ac.uk 0000-0002-8641-9309 Collins James A jamescolly89@hotmail.com de Bruijn Renee renee.debruijn@tno.nl Haliuc Aritina aritinahaliuc@gmail.com 0000-0002-5681-8210 Heiri Oliver oliver.heiri@unibas.ch http://www.bio.uu.nl/~palaeo/people/Olivier/index.html 0000-0002-3957-5835 Hubay Katalin hubay.katalin@atomki.mta.hu Jones Gwydion g.jones@swansea.ac.uk Jones Vivienne Laug Andreas andreasjlaug@googlemail.com 0000-0002-5892-6725 Merkt Josef josefmerkt@gmx.de Muschitiello Francesco fm476@cam.ac.uk Müller Meike meikee.mueller@yahoo.de Peters Tom tompeters.home@gmail.com Peterse Francien f.peterse@uu.nl 0000-0001-8781-2826 Pueschel Ashley AshleyPueschel@outlook.com Staff Richard A richard.staff@arch.ox.ac.uk 0000-0002-8634-014X ter Schure Anneke a.t.m.t.schure@ibv.uio.no van den Bos Valerie valerie.vandenbos@vuw.ac.nz Wagner-Cremer Frederike F.Wagner@uu.nl 2024 Dry mass concentrations of individual n-alkanes in sediment core Haem13 from lake Hämelsee dataset https://doi.org/10.1594/PANGAEA.964524 2024-04-17T06:26:57 https://doi.org/10.1594/PANGAEA.964375 This dataset provides concentrations of n-alkanes for the Lateglacial sediment sequence retrieved from Lake Hämelsee (Germany) in 2013. Concentrations of n-alkanes (ug/g), the Carbon Preference Index (CPI) and the Average Chain Length C21-C33 (ACL) are all presented against both depth (m) and age (cal yr. BP). The n-alkane concentration data provides information on the Lateglacial dynamics of local plant productivity, whereas the ACL and CPI of the sediment samples were determined to estimate origin and preservation condition. A total of 167 samples from the Lateglacial section of the core were processed using a Dionex 350 accelerated solvent extraction (ASE) system. Solid phase extraction (SPE) was used to separate the extracts into an aliphatic, aromatic and alcohol/fatty acid fraction. Separation was achieved by loading the extracts on activated silica columns and eluting each fraction with hexane, hexane/DCM (1:1 v/v) and DCM/MeOH (9:1 v/v) successively. The aliphatic fraction, containing the n-alkanes, was analyzed by gas chromatography-mass spectrometry (GC/MS). The peak areas for each n-alkane homologue were compared to the peak areas from an internal standard (5α-androstane) and an external n-alkane standard mixture for absolute quantification. We refer to Rach et al. (2020) for further details on the exact analytical setup. All measurements were performed in the laboratories of GeoForschungsZentrum Potsdam. Rach Oliver rach@geo.uni-potsdam.de 0000-0003-3547-2182 Hadeen Xennophone Sachse Dirk dirk.sachse@gfz-potsdam.de 0000-0003-4207-0309 2020 An automated solid phase extraction procedure for lipid biomarker purification and stable isotope analysis journal article Organic Geochemistry 142 https://doi.org/10.1016/j.orggeochem.2020.103995 103995 9.316667 9.316667 52.766667 52.766667 9.316667 52.766667 2013-07-08T09:00:00 2013-07-12T17:00:00 22.0 22.0 European Cooperation in Science and Technology COST https://doi.org/10.13039/501100000921 ES0907 ES0907 - INTegrating Ice core, MArine and TErrestrial records - 60,000 to 8000 years ago (INTIMATE) https://www.cost.eu/actions/ES0907/ Haemelsee_Haem13 52.766667 9.316667 Lake Haemelsee, Germany 22.0 2013-07-08T09:00:00 52.766667 9.316667 22.0 2013-07-12T17:00:00 Niederreiter Piston corer NPC 3.4 m Lake sediment sequence retrieved using a 60 mm piston corer deployed from a floating platform. 3173 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ #0 = below detection limit ORDINAL NUMBER Ord No Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 Ord No DEPTH, sediment/rock Depth sed m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock Length L http://dbpedia.org/resource/Length Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 Depth sed [m] AGE Age ka BP http://en.wikipedia.org/wiki/Kyr age http://purl.obolibrary.org/obo/PATO_0000011 Time T http://dbpedia.org/resource/Time Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 Age [ka BP] n-Alkane C17, per unit sediment mass C17/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C17/sed [µg/g] n-Alkane C21, per unit sediment mass C21/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C21/sed [µg/g] n-Alkane C22, per unit sediment mass C22/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C22/sed [µg/g] n-Alkane C23, per unit sediment mass C23/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C23/sed [µg/g] n-Alkane C24, per unit sediment mass C24/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C24/sed [µg/g] n-Alkane C25, per unit sediment mass C25/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C25/sed [µg/g] n-Alkane C26, per unit sediment mass C26/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C26/sed [µg/g] n-Alkane C27, per unit sediment mass C27/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C27/sed [µg/g] n-Alkane C28, per unit sediment mass C28/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C28/sed [µg/g] n-Alkane C29, per unit sediment mass C29/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C29/sed [µg/g] n-Alkane C30, per unit sediment mass C30/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C30/sed [µg/g] n-Alkane C31, per unit sediment mass C31/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C31/sed [µg/g] n-Alkane C32, per unit sediment mass C32/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C32/sed [µg/g] n-Alkane C33, per unit sediment mass C33/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C33/sed [µg/g] n-Alkane C34, per unit sediment mass C34/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C34/sed [µg/g] n-Alkane C35, per unit sediment mass C35/sed µg/g Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C35/sed [µg/g] n-Alkanes n-Alkanes µg/g n-alkane Gas chromatography-mass spectrometry, following the analytical setup and protocol of Rach et al. (2020) Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 C17-C35, per dry mass n-Alkanes [µg/g] Carbon Preference Index, n-Alkanes CPI n-Alkanes carbon preference index CPI https://doi.org/10.1016/j.marchem.2006.05.001 Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 CPI n-Alkanes Average chain length, n-Alkanes, C21-C33 ACL 21-33 n-alkane Engels Stefan s.engels@bbk.ac.uk 0000-0002-2078-0361 ACL 21-33 CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable alkanes Biodiversity Chironomidae deuterium diatoms ecosystem dynamics GDGTs Germany Haemelsee LOI Pediastrum XRF author103914 author103915 author103987 author10987 author30088 author31951 author34250 author35132 author49496 author49947 author50228 author52604 author62601 author64064 author64077 author64590 author72349 author76274 author79977 author86100 author86101 author86102 author86103 author86104 author86105 author86106 author86107 author969 award958 curlevel30 event2990124 funder20957 geocode1 geocode1599 geocode1600 geocode1601 geocode2205 geocode6262 geocode8128 journal12339 license21 method11372 method16296 param132225 param132226 param132227 param132228 param132229 param150614 param155089 param160871 param160872 param160873 param160874 param160875 param160876 param164360 param164361 param174905 param24425 param502794 param525542 pi64590 ref123991 term1073131 term1073135 term38263 term38305 term39182 term41056 term43863 term43975 term47910 term48573 term49740 term50190 term51430 term52477 term53319 term661 term69859 term70817 term71533 term73543 term738