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Citation
Noble, T.L. (2021) Concentration of Trace Metals in sediment collected from the Sabrina Coast Continental Slope - core C012-PC05, Ver. 1, Australian Antarctic Data Centre - doi:10.26179/5ef1639d1ab3c, (Unreleased data)
Title
Concentration of Trace Metals in sediment collected from the Sabrina Coast Continental Slope - core C012-PC05
Data Centre
Australian Antarctic Data Centre, Australia
DOI
doi:10.26179/5ef1639d1ab3c
Created Date
2020-06-22
Revision Date
2020-06-23
Parent record
None

Description

Trace metal concentrations are reported in micrograms per gram of sediment in core C012-PC05 (64⁰ 40.517’ S, 119⁰ 18.072’ E, water depth 3104 m). Each sediment sample (100-200mg) was ground using a pestle and mortar and digested following an initial oxidation step (1:1 mixture of H2O2 and HNO3 acid) and open vessel acid on a 150 degree C hotplate using 2:5:1 mixture of concentrated distilled HCl, HNO3 and Baseline Seastar HF acid. After converting the digested sample to nitric acid, an additional oxidation step was performed with 1:1 mixture of concentrated distilled HNO3 and Baseline Seastar HClO4 acid. A 10% aliquot of the final digestion was sub-sampled for trace metal analyses.

Trace metal concentrations were determined by external calibration using an ELEMENT 2 sector field ICP-MS from Thermo Fisher Scientific (Bremen, Germany) at Central Science Laboratory (University of Tasmania). The following elements were analysed in either low (LR) or medium resolution (MR): Sr88(LR), Y89(LR), Mo95(LR), Ag107(LR), Cd111(LR), Cs133(LR), Ba137(LR), Nd146(LR), Tm169(LR), Yb171(LR), Tl205(LR), Pb208(LR), Th232(LR), U238(LR), Na23(MR), Mg24(MR), Al27(MR), P31(MR), S32(MR), Ca42(MR), Sc45(MR), Ti47(MR), V51(MR), Cr52(MR), Mn55(MR), Fe56(MR), Co59(MR), Ni60(MR), Cu63(MR), Zn66(MR).

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Purpose

The sediment geochemistry can be used to reconstruct changes in environmental conditions along the East Antarctic margin of the Southern Ocean.

Quality

Data quality and control were monitored by repeat measurement of the Chile sediment RR9702-42MC8 (detrital-rich) and KN7812-12BC 0-6cm SO (opal-rich) sediment standards. The samples were processed in two batches, each containing one sediment standard and one procedural blank for 22 samples. The procedural blanks were negligible (less than 1.1% of standard values). A third sample batch (n=4) was measured to analyse samples 2.9-2.91, 5.6-5.61, and 9.7-9.71; and provide duplicate analysis of sample 11.6-11.61.

Access

These data are not yet publicly available for download.

Temporal Coverages

Spatial Coverages

Science Keywords

Additional Keywords

    None

Locations

  • GEOGRAPHIC REGION > POLAR
  • CONTINENT > ANTARCTICA
  • OCEAN > SOUTHERN OCEAN > SABRINA COAST CONTINENTAL SLOPE

Platforms

  • LABORATORY

Instruments

  • Inductively Coupled Plasma Mass Spectrometer

Researchers

  • noble, taryn (INVESTIGATOR,TECHNICAL CONTACT,DIF AUTHOR)

Use Constraints

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4419_IN2017-V01-C012-PC05-TraceMetals when using these data.

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