Hobart

Seminar Abstract

Friday 20 August 2010, 11.30am (Tas time)
CSIRO Auditorium, Hobart

Bronwyn Wake
School of Ocean and Earth Sciences
University of Southampton
National Oceanography Centre, UK

Trace metal measurements by isotope dilution-ICPMS and its application to waters from the Southern Ocean and South East Atlantic Ocean

Isotope dilution-inductively coupled plasma-mass spectrometry (ID-ICP-MS) is a new technique for the measurement of multiple trace elements on small sample volumes. Details of the method will be presented. The method was used for the measurement of the meridional and vertical distribution of dissolved concentrations of trace metals (Fe, Cu, Cd, Ni, Mn, Pb, Ag) in samples collected during the BONUS-GOODHOPE cruise Feb-Mar 2008. The samples span the temperate waters of the Southeast Atlantic – the waters off South Africa (34.5ºS 14.5ºE); across three frontal zones (Subtropical; Subantarctic; and Polar Front); into the polar waters of the Antarctic Zone and the Weddell Gyre, south of the Antarctic Circumpolar Current (57.5ºS 2ºW). The information on the trace metal concentrations will be analysed with regard to hydrological parameters (nutrients, temperature, salinity, dissolved oxygen); phytoplankton taxonomy and abundance; and compared to trace metal data measured using different methods by fellow cruise participants. The information obtained will provide insights into the link between phytoplankton species distributions and these trace metals as well as increase the small database of the dissolved trace metal concentrations in the world’s oceans, particularly the Southern Ocean.

Seminar recording

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Location:
CSIRO = Marine Laboratories Auditorium, Castray Esplanade, Hobart

For further information, or to schedule a seminar, contact:
Andrew Meijers, (Oceanographic seminars) CSIRO Marine and Atmospheric Research (03) 6232 5335
Natalie Kelly, (Biology/Modelling seminars) CSIRO Marine and Atmospheric Research 0438 452 483
Jillian Enraght-Moony, (seminar administrator) CSIRO Marine and Atmospheric Research (03) 6232 5320
Communications Manager, Antarctic Climate and Ecosystems CRC (03) 6226 7888
Tracey Cochrane, Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (03) 6226 2937

Last updated 24/08/10