In this work, for the first time, a nanocomposite composed of carbon nanotubes and lacunary polyoxotungstates (LPOT/CNT) was synthesized. The nanocomposites were used as a sorbent for the dispersive micro solid-phase extraction (D-µSPE) of organophosphorus pesticides (OPPs) from water and fruit juice samples. The extracted OPPs were quantified via gas chromatography-flame ionization detector (GC−FID). The main factors affecting the D-µSPE of the OPPs, such as the desorption conditions, amount of sorbent, and extraction time, were investigated, in detail. The LPOT/CNT nanocomposite shows a synergistic effect and its extraction efficiency is higher than intact CNTs and LPOTs. Under the optimized conditions, the D-µSPE-GC-FID method showed good linearity from 0.02 to 200 ng mL−1 limits of detection in the range of 0.007–0.02 ng mL−1. The precision expressed as relative standard deviations (RSD%) ranged from 3.3–4.7 %. The D-µSPE- GC-FID based on LPOT/CNT sorbent was used for the extraction of OPPs in fruit juices (apple juice and peach juice) and real water samples (wastewater and river water) and with satisfactory relative recovery values of 94.2−99.6 %.

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