%0 Journal Article %T Preconcentration and Determination of Psychotropic Drugs in Urine Samples by Ion Mobility Spectrometry with Electrospray Ionization Coupling On-Line Single-Drop Liquid-Liquid-Liquid Microextraction %A Li, Shu %J Journal of Analytical Methods in Chemistry %V 2019 %@ 2090-8865 %D 2019-11-13 %I Hindawi %~ DeepDyve