Micrometer-Resolved Binding of Lead to Iron in Urban River Sediments

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Contents Vol 57(10)

doi:10.1071/CH04066

Micrometer-Resolved Binding of Lead to Iron in Urban River Sediments

Sebastien Rauch ^A ^B ^C, Gregory M. Morrison ^B

^A Department of Civil and Environmental Engineering, 48-108, Massachusetts Institute of Technology, Cambridge MA 02139, USA.
^B Water Environment Transport, Chalmers University of Technology, 412 96 Göteborg, Sweden.
^C Author to whom correspondence should be addressed (e-mail: sebr@mit.edu).





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Australian Journal of Chemistry 57(10) 921–924 http://dx.doi.org/10.1071/CH04066
Submitted: 22 March 2004 Accepted: 3 July 2004 Published online: 1 October 2004

Abstract

Recent developments in laser microprobes and the coupling of laser ablation (LA) to inductively coupled plasma mass spectrometry (ICP-MS) has opened up the possibility for detailed analysis of individual sediment grains and the elucidation of metal association with bulk elements and phases. Here, LA–ICP-MS is used for the micrometer-resolved, multi-element analysis of Pb and bulk elements such as Fe, Mg, Al, and Si. Normalized Pb signals show a clear association to Fe coatings at the surface of the particles.