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- W2022508126 abstract "A procedure involving the simultaneous performance of liquid-liquid microextraction and polypropylene microporous membrane solid-phase extraction was carried out. The applicability of the proposed procedure was evaluated through extraction of several organochlorine pesticides from river water, tomato and strawberry samples. The parameters affecting the extraction efficiency were optimized by multivariable designs, and the analytical features were estimated. Under optimized conditions, analytes were concentrated onto 1.5cm long microporous membranes placed directly into the sample containing 15mL of water with 20microL of 1-octanol. The best extraction conditions were achieved at 59 degrees C, with 60min of extraction time and 2.91g of sodium chloride. The desorption of the analytes was carried out using 30microL of a mixture of toluene and hexane in the proportion of 60:40% (v/v) for 10min. Detection limits in the range of 2.7-20.0ngL(-1), 0.50-1.15microgkg(-1), and 1.53-12.77microgkg(-1) were obtained for river water, strawberry and tomato samples, respectively. Good repeatability was obtained for all three sample types. The results suggest that the proposed procedure represents a very simple and low-cost microextraction alternative rendering adequate limits of quantification for the determination of organochlorine pesticides in environmental and food samples." @default.
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- W2022508126 date "2010-01-01" @default.
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- W2022508126 title "Simultaneous liquid–liquid microextraction and polypropylene microporous membrane solid-phase extraction of organochlorine pesticides in water, tomato and strawberry samples" @default.
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- W2022508126 doi "https://doi.org/10.1016/j.chroma.2009.11.017" @default.
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