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JIMENEZ J, BERNAL J, NOZAL M, ALONSO C. Liquid–liquid extraction followed by solid-phase extraction for the determination of lipophilic pesticides in beeswax by gas chromatography–electron-capture detection and matrix-matched calibration☆. Journal of Chromatography A. 2004 Sep 03;1048(1):89–97. doi: 10.1016/s0021-9673(04)01189-6. |