The effect of humic acids on the sequential extraction of metals in soils and sediments using ICP-AES and chemometric analysis

Santamaria-Fernandez, Rebeca; Cave, Mark R.; Hill, Steve J.. 2003 The effect of humic acids on the sequential extraction of metals in soils and sediments using ICP-AES and chemometric analysis. Journal of Environmental Monitoring, 5 (6). 929-934. 10.1039/B306865J

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Abstract/Summary

The effect of humic acids on the sequential extraction of metals from various soils and sediments has been studied. A new multi-element extraction method optimised via experimental design has been employed. The method uses centrifugation to pass the extractant solution, at varying pH, through the sediment sample. The sequential leaches were collected and analysed by ICP-AES. Chemometric data processing was utilised to identify the composition of the physico-chemical components in order to characterise the sample. A sediment sample collected from Carnon River (Cornwall, UK) and a reference material (NIST 2711 agricultural soil) were spiked with humic acids and the sequential extraction scheme was used to monitor the changes in metal distribution. The method has proved a quick and reliable way to evaluate different sediment samples, and has potential as a new tool for environmental geochemistry analysis.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1039/B306865J
Programmes:	BGS Programmes > Other
ISSN:	1464-0325
Additional Keywords:	multielement analysis; trace-metals; speciation; spectrometry; cadmium; binding; copper; zinc; lead; distributions
NORA Subject Terms:	Earth Sciences
Date made live:	17 Sep 2012 09:00 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/19522

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