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The triazole, tebuconazole pesticide, was determined in its formulation and also in the river water samples collected from different agriculture areas in the Iraqui city of Kerbala using developed high-performance liquid chromatography method(HPLC) with UV-visible detection, The mobile composition phase was a mixture of acetonitrile:methanol (50:50 v/v) and the column was C18 (250 cm x 4.6 mm,5μm). Also modified dispersive liquidliquid microextraction (DLLME), which is regarded as an ecological -friendly method, was used for the extraction of tebuconazole from water samples using acetonitrile and chloroform as solvents extraction and dispersive agent, respectively. Linearity to maintain the calibration curve was achieved from (0.1-70) μg.mL-1 with a limit of detection(0.053) μg.mL-1 and limit of quantification (0.174) μg.mL-1. Three spiked levels of concentration (1.0, 5.0, and 10) μg.mL-1 were used for the validation of the method. The relative standard deviation (RSD%) was (0.294- 0.813)%, and the percentage recovery was (100.001-100.005). The formulation studies for two different concentrations (10 and 40) μg.mL-1, which prepared from tebuconazole formulation (Raxil ODS2 2%), gave acceptable percentage recovery between (98.956-99.833). The developed method can be used accurately for the determination of tebuconazole in water samples and in the formulation of tebuconazole effectively.

periódico tchê química

EXTRACTION AND DETERMINATION OF TEBUCONAZOLE IN ENVIRONMENTAL SAMPLES FROM THE CITY OF KERBALA, IRAQ AND IN ITS FORMULATION USING HIGH- PERFORMANCE LIQUID CHROMATOGRAPHY (HPLC)