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Continuous flow analysis method for determination of soluble iron and aluminium in ice cores
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2013 (English)In: Analytical and Bioanalytical Chemistry, ISSN 1618-2642, E-ISSN 1618-2650, Vol. 405Article in journal (Refereed) Published
Abstract [en]

Iron and aluminium are the two most abundant metals on the Earth's crust, but they display quite different biogeochemical properties. While iron is essential to many biological processes, aluminium has not been found to have any biological function at all. In environmental studies, iron has been studied in detail for its limiting role in the bioproductivity of high nutrient, low carbon oceanic zones, while aluminium is routinely used as a reference of crustal contributions to atmospheric deposition archives including peat bogs, lacustrine and marine sediments and ice sheets and glaciers. We report here the development of a flow injection analysis technique, which has been optimised for the simultaneous determination of soluble iron and aluminium in polar ice cores. Iron was determined by its catalytic role in the reduction of N,N-dimethyl-p-phenylenediamene (DPD) to a semiquinonic form (DPDQ) and subsequent absorption spectroscopy at 514 nm. Aluminium was determined by spectroscopic analysis of an aluminium-lumogallion complex that exhibits fluorescence at 560 nm. These techniques have been applied to a section of Greenland ice dated to 1729-1733 ad and indicate that volcanism is a source of highly soluble aluminium and iron.

Place, publisher, year, edition, pages
2013. Vol. 405
Keyword [en]
Continuous flow analysis Solubility Dust Greenland Ice core Volcano in-line preconcentration vostok antarctic ice injection-analysis dissolved aluminum natural-waters mineral dust heavy-metals seawater climate system Biochemistry & Molecular Biology Chemistry
Research subject
SWEDARCTIC 1997, NordGRIP 1997; SWEDARCTIC 1998, NordGRIP 1998; SWEDARCTIC 1999, NordGRIP 1999; SWEDARCTIC 2000, NordGRIP 2000; SWEDARCTIC 2001, NordGRIP 2001; SWEDARCTIC 2002, NordGRIP 2002; SWEDARCTIC 2003, NordGRIP 2003; SWEDARCTIC 2004, NordGRIP 2004
Identifiers
URN: urn:nbn:se:polar:diva-1931DOI: 10.1007/s00216-012-6166-5OAI: oai:DiVA.org:polar-1931DiVA: diva2:810208
Note

ISI Document Delivery No.: 072EB Times Cited: 2 Cited Reference Count: 41 Spolaor, A. Vallelonga, P. Gabrieli, J. Roman, M. Barbante, C. Denmark (SNF); Belgium (FNRS-CFB); France (IFRTP); France (INSU/CNRS); Germany (AWI); Iceland (RannIs); Japan (MEXT); Sweden (SPRS); Switzerland (SNF); USA (NSF); European Union [243908] We thank Anders Svensson, Henrik Clausen and Bo Vinther for helpful discussion and assistance with NorthGRIP SO42- data and the sample chronology. This work is a contribution to the NGRIP ice core project, which is directed and organised by the Ice and Climate Research Group at the Niels Bohr Institute, University of Copenhagen. It is being supported by funding agencies in Denmark (SNF), Belgium (FNRS-CFB), France (IFRTP and INSU/CNRS), Germany (AWI), Iceland (RannIs), Japan (MEXT), Sweden (SPRS), Switzerland (SNF) and the USA (NSF). The research leading to these results has received funding from the European Union's Seventh Framework programme (FP7/2007-2013) under grant agreement no. 243908, 'Past4Future: Climate change-Learning from the past climate'. This is Past4Future contribution no. XX. 2 Springer heidelberg Heidelberg Biochemical Research Methods; Chemistry, Analytical

Available from: 2015-05-06 Created: 2015-05-06 Last updated: 2015-06-16

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