Rapid Determination of 21 Chinese Domestically Registered Pesticides in Ginseng Using Cleanup Based on Zirconium-Oxide-Modified Silica and Ultrahigh-Performance Liquid Chromatography-Tandem Mass Spectrometry
Table 1
MS/MS detection information of 21 pesticides.
Compound
Ionization mode
RT (min)
Ion transition
Ion ratio
DP (V)
CE (V)
CXP (V)
Azoxystrobin
ESI+
2.08
404.1 > 372.2a; 404.1 > 344.2
0.41
50
20; 34
10; 13
Carbendazim
ESI+
0.68
192.0 > 160.1a; 192.0 > 132.1
0.27
55
25; 41
7; 5
Cymoxanil
ESI+
0.98
199.0 > 128.1a; 199.0 > 111.1
2.60
45
13; 25
7; 7
Cyprodinil
ESI+
2.42
226.1 > 108.1; 226.1 > 93.1a
0.62
88
34; 50
9; 7
Diethofencarb
ESI+
2.02
268.1 > 226.2a; 268.1 > 198.0
0.35
57
14; 22
9; 7
Difenoconazole
ESI+
2.50
406.0 > 337.0; 406.0 > 251.0a
0.25
75
25; 34
12; 10
Dimethomorph
ESI+
1.87
388.1 > 301.1a; 388.1 > 165.2
0.33
110
29; 42
12; 10
Fluazinam
ESI−
2.78
463.0 > 415.9a; 463.0 > 397.8
0.55
−114
−28; −25
−17; −17
Fludioxonil
ESI−
1.97
247.0 > 180.0; 247.0 > 126.0a
1.78
−80
−40; −41
−12; −10
Flumorph
ESI+
1.61
372.2 > 285.1a; 372.2 > 165.1
0.50
100
29; 41
11; 6
Fluopyram
ESI+
2.22
397.1 > 208.1a; 397.1 > 173.1
1.24
84
30; 40
8; 7
Flusilazole
ESI+
2.20
316.1 > 247.1a; 316.1 > 165.1
0.51
100
25; 37
9; 6
Kresoxim-methyl
ESI+
2.50
314.1 > 234.9a; 314.1 > 222.1
1.30
53
22; 20
10; 10
Mandipropamid
ESI+
2.11
412.1 > 356.1; 412.1 > 328.1a
0.11
94
14; 20
14; 12
Metalaxyl
ESI+
1.59
280.2 > 220.2; 280.2 > 192.1a
1.07
60
19; 24
9; 8
Propamocarb
ESI+
0.35
189.1 > 145.2; 189.1 > 102.1a
0.42
50
18; 24
6; 7
Propiconazole
ESI+
2.36
342.0 > 204.9; 342.0 > 159.0a
0.09
23
26; 39
10; 9
Pyraoxystrobin
ESI+
2.55
413.1 > 204.9; 413.1 > 145.2a
1.82
40
16; 35
6; 5
Pyrimethanil
ESI+
1.94
200.0 > 168.1; 200.0 > 107.0a
0.36
84
41; 32
6; 7
Thiamethoxam
ESI+
0.55
292.0 > 211.2a; 292.0 > 132.1
1.22
55
19; 30
8; 9
Trifloxystrobin
ESI+
2.83
409.1 > 206.1; 409.1 > 186.0a
1.00
82
19; 24
7; 7
aFor use of quantitation, RT: retention time, DP: declustering potential, CE: collision energy, CXP: collision cell exit potential, ESI+: positive mode of the electrospray ionization source, and ESI−: negative mode of the electrospray ionization source.
