Research Article
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
Figure 1
Schematic of the SDLLLME apparatus (a) and pump strategy (b) of the two modes in different steps.
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(b) |