Use of SPME extraction to determine organophosphorus pesticides adsorption phenomena in water and soil matrices

Giuseppe Alonzo, Claudio De Pasquale, Ainsley Jones, Andrew Charlton

Risultato della ricerca: Articlepeer review

13 Citazioni (Scopus)

Abstract

Solid-phase micro extraction (SPME) coupled with GC enables rapid and simple analysis of organophosphorus pesticides in a range of complex matrices. Investigations were made into the extraction efficiencies from water of six organophosphorus insecticides (methamidophos, omethoate, dimethoate, parathion methyl, malathion, and parathion ethyl) showing a wide range of polarities. Three SPME fibres coated with different stationary phases, polydimethylsiloxane, polyacrylate, and carbowax-divinylbenzene (CW-DVB), were investigated. Water was spiked with the pesticides at concentrations from 1 to 0.01 µg mL-1, and the solutions used for optimization of the procedure. The CW-DVB fibre, with a 65 µm coating, gave the best performance. The optimized experimental conditions were sample volume 10 mL at 20°C, equilibration time 16 min, pH 5, and presence of 10% w/v NaCl. SPME analyses were performed on solutions obtained by equilibrating aqueous pesticide solutions with six certified soils with various physico-chemical characteristics. SPME data were also assessed by comparison with analyses performed by using conventional solid-phase extraction. Results indicate the suitability of SPME for analysis of pesticides in environmental water samples.
Lingua originaleEnglish
pagine (da-a)1101-1115
Numero di pagine15
RivistaInternational Journal of Environmental Analytical Chemistry
Volume85
Stato di pubblicazionePublished - 2005

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal
  • Soil Science
  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

Fingerprint Entra nei temi di ricerca di 'Use of SPME extraction to determine organophosphorus pesticides adsorption phenomena in water and soil matrices'. Insieme formano una fingerprint unica.

Cita questo