PANGAEA_945064 Solid phase concentrations in the sediment at 5 sites along a water depth transect in the Gulf of Mexico (Louisiana continental shelf) Lenstra, Wytze K Solid phase concentrations in the sediment at 5 sites along a water depth transect in the Gulf of Mexico (Louisiana continental shelf) 2022-06-07 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.945064 Investigator Wytze K Lenstra w.k.lenstra@uu.nl Earth Science Event label DEPTH, sediment/rock Depth, top/min Depth, bottom/max Porosity Carbon, organic Aluminium, total Cobalt, total Iron, total Manganese, total Nickel, total Sulfur, total Iron ascorbic acid extraction Iron oxides Iron II, ferrous iron Iron Iron monosulfide Iron disulfide geoscientificInformation 64PE434_1 64PE434_2 64PE434_3 64PE434_4 64PE434_5 64PE434_NICO_Leg7 Station 1 Station 2 Station 3 Station 4 Station 5 Surface water sample Inductively Coupled Plasma - Optical Emission Spectrometry (ICP-OES) Pelagia Complete 27.736933 28.8091 -91.33724999999998 -91.22525000000002 0.0025 m (DEPTH, sediment/rock) 0.15 m (DEPTH, sediment/rock) unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 1511 data points text/tab-separated-values Lenstra, Wytze K; van Helmond, Niels A G M; Żygadłowska, Olga Marzena; van Zummeren, Roosmarijn; Witbaard, Rob; Slomp, Caroline P (2022): Sediments as a Source of Iron, Manganese, Cobalt and Nickel to Continental Shelf Waters (Louisiana, Gulf of Mexico). Frontiers in Marine Science, 9, https://doi.org/10.3389/fmars.2022.811953

All sediments were freeze-dried and the porosity was determined from the weight loss upon freeze drying. To determine the total elemental concentrations of aluminum (Al), Co, Fe, Mn, Ni, and S, ca. 125 mg of sediment was digested in 2.5 ml mixed acid (HNO3:HClO4; 2:3) and 2.5 ml 40% HF at 90◦C. After fuming off the acids, the residue was redissolved in 4.5% HNO3. The solutions were subsequently analyzed on an ICP-OES. The analytical uncertainty based on duplicates and triplicates was <1% for Al, <4.2% for Co, <1.6% for Fe, <2.5% for Mn, <2.3% for Ni, and <1.7% for S. A subsample of circa 300 mg was decalcified with 2 wash steps of 1M HCl and subsequently dried, powdered and analyzed for carbon (C) using an elemental analyser (Fisons Instrumentsmodel NA 1500 NCS). Organic C content was determined after correction for the weight loss following decalcification. The analytical uncertainty based on duplicates and triplicates was <0.07 wt%. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.945064"!

http://en.wikipedia.org/wiki/Porosity Porosity https://doi.org/10.3389/fmars.2022.811953 Sediments as a Source of Iron, Manganese, Cobalt and Nickel to Continental Shelf Waters (Louisiana, Gulf of Mexico) https://en.wikipedia.org/wiki/RV_Pelagia Pelagia DIF 9.4 2022-06-07 2026-04-30