Research Article
Molecularly Imprinted Nanomicrospheres as Matrix Solid-Phase Dispersant Combined with Gas Chromatography for Determination of Four Phosphorothioate Pesticides in Carrot and Yacon
Figure 6
Chromatograms of the standard mixture solution of four pesticides in 25 ng·mL−1 (a), the spiked sample in 2.5 ng·g−1 of four pesticides after preconcentration by N-ethylenediamine propyl silane sorbent (b), the spiked sample in 2.5 ng·g−1 of four pesticides after preconcentration by MIPs sorbent (c), the actual carrot sample (d), and the actual yacon sample (e). Peak identification: 1, tolclofos-methyl; 2, parathion-methyl; 3, chlorpyrifos; 4, phoxim.
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