Figure 3

Effect of the DMAPBA amount on the derivatization efficiencies of BRs in acetonitrile (n = 3) (A) and in plant extract (n = 3) (B). BRs were spiked in the sampling solution at 1 ng/mL each.
Effect of the DMAPBA amount on the derivatization efficiencies of BRs in acetonitrile (n = 3) (A) and in plant extract (n = 3) (B). BRs were spiked in the sampling solution at 1 ng/mL each.