Jump to main content
Jump to site search

Issue 1, 2017
Previous Article Next Article

Investigation of cloud point extraction for the analysis of metallic nanoparticles in a soil matrix

Author affiliations

Abstract

The characterization of manufactured nanoparticles (MNPs) in environmental samples is necessary to assess their behavior, fate and potential toxicity. Several techniques are available, but the limit of detection (LOD) is often too high for environmentally relevant concentrations. Therefore, pre-concentration of MNPs is an important component in the sample preparation step, in order to apply analytical tools with a LOD higher than the ng kgāˆ’1 level. The objective of this study was to explore cloud point extraction (CPE) as a viable method to pre-concentrate gold nanoparticles (AuNPs), as a model MNP, spiked into a soil extract matrix. To that end, different extraction conditions and surface coatings were evaluated in a simple matrix. The CPE method was then applied to soil extract samples spiked with AuNPs. Total gold, determined by inductively coupled plasma mass spectrometry (ICP-MS) following acid digestion, yielded a recovery greater than 90%. The first known application of single particle ICP-MS and asymmetric flow field-flow fractionation to evaluate the preservation of the AuNP physical state following CPE extraction is demonstrated.

Graphical abstract: Investigation of cloud point extraction for the analysis of metallic nanoparticles in a soil matrix

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 08 Aug 2016, accepted on 17 Oct 2016 and first published on 19 Oct 2016


Article type: Paper
DOI: 10.1039/C6EN00322B
Citation: Environ. Sci.: Nano, 2017,4, 105-116
  •   Request permissions

    Investigation of cloud point extraction for the analysis of metallic nanoparticles in a soil matrix

    H. El Hadri and V. A. Hackley, Environ. Sci.: Nano, 2017, 4, 105
    DOI: 10.1039/C6EN00322B

Search articles by author