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Analysis of cocaethylene, benzoylecgonine and cocaine in human urine by high-performance thin-layer chromatography with ultraviolet detection: a comparison with high-performance liquid chromatography

Gas ChromatographyMedicineDrug PurityBioanalysisForensic ToxicologyDrug TestAnalytical ChemistryToxicologyLiquid ChromatographyChromatographic AnalysisPharmacologyHigh-performance Thin-layer ChromatographyUltraviolet DetectionChromatographyHigh-performance Liquid ChromatographyDrug Analysis