Determination of Methomyl Residues in Bohe by Ultrahigh-Performance Liquid Chromatography-Tandem Mass Spectrometry (UPLC-MS)

Table 1

Methomyl residues in mint cultured in the aquaponic system with known concentration (200 μg/L).

Time (days)	Methomyl residue in mint
	Hay		Roots
	Mean residue (μg/kg) (±SE)	Reduction (%)	Mean residue (μg/kg) (±SE)	Reduction (%)
0	44.54 ± 0.56	—	79.52 ± 0.30	—
5	39.29 ± 0.23	11.79	68.12 ± 0.93	14.34
10	30.07 ± 0.41	23.47	47.61 ± 0.67	30.11
15	16.73 ± 0.25	44.36	25.29 ± 0.35	46.88
20	3.310 ± 0.20	80.22	15.35 ± 1.02	39.30