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The effect of liquid chromatography eluents and additives on the positive ion responses of cocaine, benzoylecgonine, and ecgonine methyl ester using electrospray ionization

Gas ChromatographyPositive Ion ResponsesMedicineLiquid Chromatography EluentsDrug PurityAnalytical ChemistryToxicologyMethyl EsterLiquid ChromatographyChemistryChromatographic AnalysisPharmacologyPharmacokineticsChromatographyDrug Analysis