Solid Phase MicroextractionLiquid Phase MicroextractionEthylenethioureaVolatile Organic CompoundsPhyllachoralesGas Chromatography-Mass SpectrometryChromatography, GasVolatilizationPhase TransitionChemistry Techniques, AnalyticalChemical FractionationChromatography, High Pressure LiquidRheiformesDimethylpolysiloxanesWater Pollutants, ChemicalSolid Phase ExtractionWaterPesticide ResiduesApatitesChromatography, LiquidMolecular ImprintingLimit of DetectionCocaSolventsDimethoate