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Rapid quantification of polycyclic aromatic hydrocarbons in hydroxypropyl-β-cyclodextrin (HPCD) soil extracts by synchronous fluorescence spectroscopy (SFS)

Lookup NU author(s): Dr Guoxiong Hua, John Broderick, Dr Ian Singleton

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Abstract

Synchronous fluorescence spectroscopy (SFS) was directly applied to rapidly quantify selected polycyclic aromatic hydrocarbons (PAHs: benzo[a]pyrene and pyrene) in aqueous hydroxypropyl-β-cyclodextrin (HPCD) soil extract solutions from a variety of aged contaminated soils containing four different PAHs. The method was optimized and validated. The results show that SFS can be used to analyse benzo[a]pyrene and pyrene in HPCD based soil extracts with high sensitivity and selectivity. The linear calibration ranges were 4.0 × 10-6-1.0 × 10-3 mM for benzo[a]pyrene and 6.0 × 10-6-1.2 × 10-3 mM for pyrene in 10 mM HPCD aqueous solution alone. The detection limits according to the error propagation theory for benzo[a]pyrene and pyrene were 3.9 × 10-6 and 5.4 × 10-6 mM, respectively. A good agreement between SFS and HPLC was reached for both determinations of PAHs in HPCD alone and in soil HPCD extracts. Hence, SFS is a potential means to simplify the present non-exhaustive hydroxypropyl-β-cyclodextrin (HPCD)-based extraction technique for the evaluation of PAH bioavailability in soil. © 2006 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Hua G, Broderick J, Semple KT, Killham K, Singleton I

Publication type: Article

Publication status: Published

Journal: Environmental Pollution

Year: 2007

Volume: 148

Issue: 1

Pages: 176-181

ISSN (print): 0269-7491

ISSN (electronic): 1873-6424

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/j.envpol.2006.10.040

DOI: 10.1016/j.envpol.2006.10.040

PubMed id: 17240015

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