Testing the efficiency of extraction of incurred residues from soil with optimized multi-residue method

Gabriella K. Suszter, A. Ámbrus

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The reproducibility of extraction of residues from spiked soil samples and from soils containing incurred residues was tested with 14C-labeled test compounds of different physical-chemical properties. Nearly 100% of the compounds added to the sample before extraction could be recovered with an average reproducibility relative standard deviation (CV) of 5.4%. The additional steps of the determination process (cleanup, evaporation, etc.) contributed to the major part of the variability of the results (CV = 10–20%). The incurred residues were most efficiently extracted with acetone for 30 min followed by the mixture of acetone/ethyl acetate 1:1 for additional 30 min. However, they could only be recovered at various extent (64–90% of total residues), underlying the importance of testing the efficiency of extraction. The residues were identified and quantified by gas chromatography applying thermionic detector. The performance parameters of the method complied with the international method validation guidelines, and they proved to be robust and suitable for determination of pesticide residues in soils of widely different physical–chemical properties.

Original languageEnglish
Pages (from-to)547-556
Number of pages10
JournalJournal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes
Volume52
Issue number8
DOIs
Publication statusPublished - Aug 3 2017

    Fingerprint

Keywords

  • efficiency of extraction
  • incurred residues
  • pesticide residues in soils
  • Residue analysis

ASJC Scopus subject areas

  • Food Science
  • Pollution

Cite this