Research Article
A Simple and Quick Method for the Determination of Pesticides in Environmental Water by HF-LPME-GC/MS
Figure 3
Influence of the aqueous phase ionic’s strength on pesticides extraction efficiency. Extraction conditions of the donor phase: 15.0 mL of water spiked at 100.0 µg L−1 of each pesticide with NaCl; extraction time of 60 min; stirring speed of 100 rpm; and ethyl octanoate in the acceptor phase. Error bars represented the standard deviation of the mean peak area for replicates.