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- W2003306719 abstract "Two liquid-phase microextraction (LPME) approaches, static direct-immersed single-drop microextraction (DI-SDME) and continuous-flow microextraction (CFME), were used to extract methomyl in water samples and their respective extraction efficiencies were compared. Several important parameters affecting extraction efficiency such as the type of extraction solvent, solvent drop volume, stirring speed or flow rate, extraction time and salt concentration were optimised. The optimised conditions were as follows: 3.0-µL tetrachloroethane (C2H2Cl4) as the extraction solvent, 15% NaCl (w/v), 15 min extraction time and stirring speed at 600 rpm for DI-SDME; 3.5-µL C2H2Cl4 as the extraction solvent, 15% NaCl (w/v), 21 min extraction time and flowing rate at 0.8 mL min−1 for CFME. Under the previous optimal conditions, the linear range, detection limit (S/N = 3) and precision (RSD, n = 6) were 5.0-5000 ng mL−1, 1.5 ng mL−1, 6.9% for DI-SDME, and 4.0–10000 ng mL−1, 2.5 ng mL−1, 4.6% for CFME, respectively. Lake and river water samples were successfully analysed by DI-SDME and CFME. The result demonstrated that both SDME and CFME techniques are simple, low cost and amity to environment. As a result, the two approaches have tremendous potential in trace analysis of methomyl in natural waters." @default.
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- W2003306719 date "2008-05-15" @default.
- W2003306719 modified "2023-10-18" @default.
- W2003306719 title "Comparison of efficiencies between single-drop microextraction and continuous-flow microextraction for the determination of methomyl in natural waters" @default.
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- W2003306719 doi "https://doi.org/10.1080/03067310701769637" @default.
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