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

Guoxiong Hua, John Broderick, Kirk T. Semple, Ken Killham, Ian Singleton

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

Synchronous fluorescence spectroscopy (SFS) was directly applied to rapidly quantify selected polycyclic aromatic hydrocarbons (PAHs: benzo[a]pyrene and pyrene) in aqueous hydroxypropyl-beta-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 x 10(-6)-1.0 x 10(-3) mM for benzo[a]pyrene and 6.0 x 10(-6)- 1.2 x 10(-3) mM for pyrenein 10 mM HPCD aqueous solution alone. The detection limits according to the error propagation theory for benzo[a]pyrene and pyrene were 3.9 x 10(-6) and 5.4 x 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-beta-cyclodextrin (HPCD)-based extraction technique for the evaluation of PAH bioavailability in soil. (C) 2006 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)176-181
Number of pages6
JournalEnvironmental Pollution
Volume148
Issue number1
DOIs
Publication statusPublished - Jul 2007

Keywords

  • benzo[a]pyrene
  • pyrene
  • bioavailability
  • hydroxypropyl-beta-cyclodextrin (HPCD)
  • synchronous fluorescence spectrometry (SFS)
  • soil
  • bioremediation
  • SULFONYLUREA HERBICIDES
  • WATER SAMPLES
  • EXCITATION
  • SPECTROMETRY
  • MIXTURE
  • SPECTROFLUORIMETRY
  • 1-HYDROXYPYRENE

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