Determination of Polar Pesticides Based on a Modified QuPPe with Liquid Chromatography Coupled to Tandem Mass Spectrometry

Table 1

Optimal mobile phase conditions used for chromatographic separation.

Time (min)	%A^a	%B^b
0	100	0
10	70	30
11	70	30
18	70	30
19	10	90
22	10	90
22.1	100	0
30	100	0

^a94% water, 5% methanol, 1% acetic acid. ^b99% methanol, 1% acetic acid.