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Application of internal quality control to the analysis of quaternary ammonium compounds in surface and groundwater from Andalusia (Spain) by liquid chromatography with mass spectrometry

Groundwater QualityEnvironmental ChemistryEngineeringEnvironmental EngineeringEnvironmental Analytical ChemistryMass SpectrometryInternal Quality ControlWater QualityAnalytical ChemistryLiquid ChromatographyGroundwater HydrogeochemistryMedicineQuaternary Ammonium CompoundsChromatographyWater AnalysisDrug Analysis