Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIV
Written by Silviu-Laurenţiu BADEA, Carmen CONSTANTIN, Liliana BĂDULESCU
Many legacy and emerging chemicals pose significant environmental concerns due to their persistence, bioaccumulation potential, toxicity, and widespread presence in environment. Among those, are organochlorine (OCs) and organophosphate (OPs) pesticides. This study aimed to develop a GC-MS/MS method for the targeted analysis of selected OCs (1,2,3,4,5,6-hexachlorocyclohexane (HCH) isomers, aldrin, and chlordecone) and OPs (dichlorvos, chlorpyrifos, and chlorpyrifos-methyl). The linearity of the developed method was assessed for selected organochlorine and organophosphate pesticides, yielding good R2 values (≥ 0.98) for all target compounds except chlordecone. Furthermore, a spiking procedure in sol and compost was developed for OCs and OPs. To quantify OCs and OPs in soil and compost, Soxhlet extraction with toluene was used, followed by clean-up with silica-based chromatographic columns. Good recoveries were obtained for aldrin and chlorpyrifos-methyl. Lower correlation with spiked concentrations for some compounds was likely due to matrix effects. The results showed that GC-MS/MS is an efficient method for the quantification of OCs, and OPs, in complex matrices as soil and compost, highlighting their applicability for environmental monitoring and contamination assessment.
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