The University of Southampton
University of Southampton Institutional Repository

Optimization of an inductively coupled plasma-optical emission spectrometry method for the rapid determination of high-precision Mg/Ca and Sr/Ca in foraminiferal calcite

Green, D.R.H., Cooper, M.J., German, C.R. and Wilson, P.A. (2003) Optimization of an inductively coupled plasma-optical emission spectrometry method for the rapid determination of high-precision Mg/Ca and Sr/Ca in foraminiferal calcite Geochemistry, Geophysics, Geosystems, 4, (6), art.8404-[11]. (doi:10.1029/2002GC000488).

Record type: Article

Abstract

The ability to measure Mg/Ca and Sr/Ca in foraminiferal calcite has increased in importance following their identification as palaeoceanographic tracers with significant potential to constrain past changes in ocean chemistry and temperature. However, in order to tackle palaeoceanographic problems, it is essential to develop methods for the determination of these ratios that have both rapid sample throughput and high analytical precision. Here, we demonstrate the importance of simultaneous measurement for high-precision Mg/Ca and Sr/Ca analysis. Our method is readily applicable to automated analysis over a wide range of Ca concentrations and is not subject to significant matrix effects. Using a “dual view? inductively coupled plasma–optical emission spectrometer (ICP-OES), supported by a dedicated autosampler, we have investigated three nebulizers and two spray chambers and determined optimum analytical parameters. We show that there are consistent relationships between signal-to-noise ratio and gas flow rates and that the working sample dilution range has an important effect on linear response. Further, for this instrument it is important to manually constrain the timing of measurements to obtain truly simultaneous readings. Using the method developed, precisions of better than 0.21% are obtained for Mg/Ca and Sr/Ca in solutions containing between 1 and 4 ppm Ca with no significant matrix effect, using a Glass Expansion “Conikal? nebulizer coupled with a “Tracey? spray chamber, in autosampler mode.

Full text not available from this repository.

More information

Published date: 2003
Keywords: inductively coupled plasma, magnesium, strontium, foraminifera

Identifiers

Local EPrints ID: 1322
URI: http://eprints.soton.ac.uk/id/eprint/1322
ISSN: 1525-2027
PURE UUID: 7d4eaea8-83d4-4fc2-92f2-3b2bff78555a
ORCID for M.J. Cooper: ORCID iD orcid.org/0000-0002-2130-2759

Catalogue record

Date deposited: 16 Apr 2004
Last modified: 17 Jul 2017 17:17

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×