Title

Direct Determination Of Benzo[A]Pyrene In Water Samples By A Gold Nanoparticle-Based Solid Phase Extraction Method And Laser-Excited Time-Resolved Shpol'Skii Spectrometry

Keywords

Gold nanoparticles; Polycyclic aromatic hydrocarbons; Shpol'skii spectroscopy; Solid-phase extraction

Abstract

The strong affinity between polycyclic aromatic hydrocarbons (PAH) and the surface of gold colloids is investigated to device an extraction method for water samples. Within the 20-100 nm particle diameter range, the 20 nm gold nanoparticles showed the best extraction efficiencies for all the studied analytes. The new approach is combined to laser-excited time-resolved Shpol'skii spectrometry for the direct analysis of benzo[a]pyrene in drinking water samples. For a 500 μL sample volume, the analytical figures of merit demonstrate precise and accurate analysis at the parts-per-trillion level. The extraction efficiencies are statistically equivalent to 100% with relative standard deviations lower than 2%. The average recoveries were varied from 87.5% to 96.5% for different concentration of analytes. The simplicity of the experimental procedure, the low analysis cost, and the excellent analytical figures of merit demonstrate the potential of this approach for routine analysis of drinking water samples. © 2010 Elsevier B.V.

Publication Date

11-15-2010

Publication Title

Talanta

Volume

83

Issue

1

Number of Pages

233-240

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.talanta.2010.09.013

Socpus ID

78049388021 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/78049388021

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