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A rapid and efficient sample pretreatment using solvent-based de-emulsification dispersive liquid–liquid microextraction (SD-DLLME) coupled with liquid chromatography-tandem mass spectrometry (LC–MS/MS) was studied for the extraction of 58 pharmaceuticals and personal care products (PPCPs) and pesticides from water samples. Type and volume of extraction and disperser solvents, pH, salt addition, amount...
A method based on matrix solid-phase dispersion (MSPD) and gas chromatography-mass spectrometry to determine pesticides in fish liver and crab hepatopancreas was optimized. Ethyl acetate and acetonitrile were evaluated as elution solvents and their volumes were also checked. The best results were obtained with 1.0g reused C18 as sorbent, using 5mL acetonitrile as the elution solvent. Analytical recoveries...
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