Issue 7, 2010
From the journal:

Journal of Analytical Atomic Spectrometry

Application of hydrodynamic chromatography-ICP-MS to investigate the fate of silver nanoparticles in activated sludge

Karen Tiede,*ab   Alistair B. A. Boxall,ab   Xinmei Wang,b   David Gore,c   Dirk Tiede,d   Malcolm Baxter,b   Helen David,c   Steven P. Teare  and  John Lewisb  

* Corresponding authors

a Environment Department, University of York, Heslington, York, UK

b The Food and Environment Research Agency, Sand Hutton, York, UK
E-mail: karen.tiede@fera.gsi.gov.uk
Tel: +44 (0) 1904 462151

c SEAC Unilever, Colworth House, Sharnbrook, UK

d Centre for Geoinformatics Salzburg (Z_GIS), Salzburg University, Hellbrunnerstrasse 34, Salzburg, Austria

e Department of Physics, University of York, Heslington, York, UK

Abstract

Detection and characterisation are two of the major challenges in understanding the fate, behaviour and occurrence of engineered nanoparticles (ENPs) in the natural environment. In a previous paper we described the development of hydrodynamic chromatography coupled to plasma mass spectrometry (HDC-ICP-MS) for detecting and characterising ENPs in aqueous matrices. This paper describes the applicability of the approach, to study the behaviour of silver nanoparticles in a much more complex and relevant environmental system i.e. sewage sludge supernatant. Batch sorption studies were performed at a range of nanosilver concentrations. Following completion, the sludge supernatant was characterised by ICP-MS, HDC-ICP-MS and transmission electron microscopy (TEM). It was found that, after a contact time of 6 h, most of the silver had partitioned to the sewage sludge (>90%). However, of the silver remaining in the supernatant, some of this was in the nanoparticle form, implying that closer consideration should be given to the longer-term impact of the release of silver ENPs into aquatic ecosystems. These preliminary data clearly show the utility of HDC-ICP-MS for studying the occurrence and behaviour of ENPs in complex natural environments.

Graphical abstract: Application of hydrodynamic chromatography-ICP-MS to investigate the fate of silver nanoparticles in activated sludge

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Article information

DOI
https://doi.org/10.1039/B926029C
Article type
Technical Note
Submitted
10 Dec 2009
Accepted
24 Mar 2010
First published
30 Apr 2010

J. Anal. At. Spectrom., 2010,25, 1149-1154

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Application of hydrodynamic chromatography-ICP-MS to investigate the fate of silver nanoparticles in activated sludge

K. Tiede, A. B. A. Boxall, X. Wang, D. Gore, D. Tiede, M. Baxter, H. David, S. P. Tear and J. Lewis, J. Anal. At. Spectrom., 2010, 25, 1149 DOI: 10.1039/B926029C

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