A sensitive fluorescence probe for DDT-type pesticides

Salah Hassoon, Israel Schechter*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Nile red was examined as a possible fluorescence probe for DDT-type contaminations in aqueous solutions. The effects of such a pesticide (i.e. methoxychlor) on Nile red fluorescence properties was shown to be strong enough for analytical purposes. Several spectral effects were observed: these include a selective complexation reaction, resulting in a new fluorescence peak (at 605nm) and a polarization enhancement of the original Nile red peak (at 663nm). In addition, a linearly dependent blue-shift of the original Nile red fluorescence was obtained. The fluorescence enhancement and intensity of the new complex peak were linearly dependent on pesticide concentration in the μgml-1 range. The probe showed a certain selectivity to DDT-type pesticides. Copyright (C) 1998 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)77-82
Number of pages6
JournalAnalytica Chimica Acta
Volume368
Issue number1-2
DOIs
StatePublished - 17 Jul 1998
Externally publishedYes

Keywords

  • DDT-type pesticides
  • Fluoroscence
  • Methoxychlor
  • Nile red

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