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Determination of pharmaceuticals in freshwater sediments using ultrasonic-assisted extraction with SPE clean-up and HPLC-DAD or LC-ESI-MS/MS detection

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Academic year: 2019

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Table 1 Structures, physico-chemical properties and therapeutic classes of the pharmaceuticals compounds used in the analytical development studies
Figure 1 Chromatogram of a mixture of the pharmaceuticals in MeOH. Chromatographic conditions: Zorbax Eclipse XDB-C18 reverse-phase column (250 mm × 4 mm i.d., 5 µm); Mobile phase of 10mM ammonium acetate with acetic acid and ACN at pH= 4.8; flow rate 1.0
Table 2 Recovery of selected pharmaceuticals using single solvent and mixtures (2 cycles) and ultrasonic extraction of sediment spiked at 1�g g-1 (BTC sediment)
Figure 2 Recovery of selected pharmaceuticals using the optimized method at different sonication and shaking times (BTC sediment)
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