Research Article
Effect of Pretreatment on Detection of 37 Pesticide Residues in Chrysanthemum indicum
Figure 5
Effect of extraction conditions on pesticide recoveries in groups A and B (a) pesticide recovery for different cleanup sorbents; (b) pesticide recovery for different extraction solvents; (c) pesticide recovery for different extraction times; and (d) pesticide recovery for different purification times.
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