Abstract
In the present study, dispersive solid-phase extraction (DSPE) with a sorbent of metal–organic framework/ polypyrrole (MOF/PPy) composite was performed to measure the pesticides residual by gas chromatography (GC). For this purpose, MOF/PPy as sorbent was first synthesized and characterized. The results showed that the synthesis was successful. The present sorbent was used to extract organophosphate and triazole pesticides from an aqueous medium. DSPE was followed by a dispersive liquid-liquid microextraction (DLLME) method for further pre-concentration. Then, the extraction conditions were optimized to obtain precision, accurate and sensitive analytical signals. In the developed method, a wide linear range in the range of 0.5–5000 μg/L (R2 > 0.99) was obtained for most analytes. The developed method was also successfully used to measure pesticides in real samples of tap water, apple juice, grape juice and carrot juice. The benefits of this method can be appropriate inter and intra-day repeatability and the acceptable limit of detection (LOD) and limit of quantification (LOQ).
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The authors are thankful for the provided financial support by Yasouj University for the current research.
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Shokouhmandi, Z., Shokrollahi, A. Polymer-coated MOF for effective pesticides’ sorbent in combined DSPE-DLLME method. Chem. Pap. 77, 321–334 (2023). https://doi.org/10.1007/s11696-022-02432-5
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DOI: https://doi.org/10.1007/s11696-022-02432-5