3.10. Effect of time
The extraction time is an affecting parameter in DLLME experiments.
Therefore, the effect of extraction time was studied over the
range of 1–5 min. The results indicated that the extraction process is
time-independent and very fast due to the large surface of contact
between the extraction solvent and the aqueous phase. This is the
most important advantage of the DLLME technique. The influence of
centrifugation time was also studied. The results indicated that for a