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J. Braz. Chem. Soc. vol.28 número12

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Figure 1 shows the effect of these extraction solvents on the  EFs. As can be seen in Figure 1, when chlorobenzene was  used, the highest value of EFs could be achieved
Figure 2. Effect of extraction solvent volume. Extraction conditions: chlorobenzene used as extraction solvent, 0.2 mmol L -1  Triton X-100 used as the  surfactant, the extraction time was fixed at 10 s with the ultrasound frequency at 40 kHz and 300 W, no
Figure 4. Effect of surfactant concentration. Extraction conditions: chlorobenzene used as extraction solvent, Triton X-100 used as the surfactant, the  extraction time was fixed at 10 s with the ultrasound frequency at 40 kHz and 300 W, no salt (sodium ch
Figure 5. GC-FPD chromatogram of OPPs obtained from M-UASEME sample preparation in fortified honey sample
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