Pesticidi i fitomedicina 2012 Volume 27, Issue 3, Pages: 239-244
https://doi.org/10.2298/PIF1203239D
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Multiresidue analysis of pesticides in soil by liquid-solid extraction procedure
Đurović Rada (Institute of Pesticides and Environmental Protection, Laboratory of Chemistry, Belgrade)
Đorđević Tijana (Institute of Pesticides and Environmental Protection, Laboratory of Chemistry, Belgrade)
Radivojević Ljiljana (Institute of Pesticides and Environmental Protection, Laboratory of Chemistry, Belgrade)
Šantrić Ljiljana (Institute of Pesticides and Environmental Protection, Laboratory of Chemistry, Belgrade)
Gajić-Umiljendić Jelena (Institute of Pesticides and Environmental Protection, Laboratory of Chemistry, Belgrade)
A multiresidue method for simultaneous determination of four pesticides
(diazinon, acetochlor, aldrine and carbofuran) belonging to different
pesticide groups, extracted from soil samples, is described. The method
presented is based on liquid-solid extraction (LSE) and determination of
pesticides, i.e. the pesticides were extracted by methanol- acetone mixture,
purified on florisil column and eluted by ethyl acetate-acetone mixture.
Optimization of the main parameters affecting the LSE procedure, such as the
choice of purification sorbent, as well as the elution solvent and its
volume, were investigated in details and optimized. Also, validation of the
proposed method was done. Gas chromatography-mass spectrometry (GC-MS) was
used for detection and quantification of the pesticides studied. Relative
standard deviation (RSD) and recovery values for multiple analysis of soil
samples fortified with 30 μg/kg of each pesticide were below 8% and higher
than 89%, respectively. Limits of detection (LOD) for all the compounds
studied were less than 4 μg/kg.
Keywords: pesticides, soil, residues, analytical methods
Projekat Ministarstva nauke Republike
Srbije, br. TR31043