Research Article
A Simple and Quick Method for the Determination of Pesticides in Environmental Water by HF-LPME-GC/MS
Figure 4
Effect exposure times on the extraction efficiency. Extraction conditions of the donor phase: 15.0 mL of water spiked at 100.0 µg L−1 of each pesticide; stirring speed of 200 rpm; and ethyl octanoate in the acceptor phase. Error bars represented the standard deviation of the mean peak area for replicates.