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

<div>SDLLLME-IMS spectrum obtained for the extraction of a mixture of ketamine and pethidine in urine with respect to the concentration of 50 <i>μ</i>g·L<sup>−1</sup>. Peak 1 and Peak 2 are identified as ketamine and pethidine.</div>

Journal of Analytical Methods in Chemistry

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Figure 5

Figure 5: 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 5 | 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 