Flow-Injection Preconcentration of Chloramphenicol Using Molecularly Imprinted Polymer for HPLC Determination in Environmental Samples

Figure 3

The changes of flow injection signal for flushing the MIP bed in SPE syringe with eight consecutive portions of 10 mL water, elution the MIP bed with 2 mL methanol after each flushing with water, evaporation, and reconstitution of evaporated samples in 1 mL water prior to the injection. Conditions of measurements are the same as in Figure 2. The dotted line shows the signal magnitude obtained for injection into the FIA system of a 150 μg/L solution of CAP in methanol.