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GCxGC-TOFMS Analysis of Multi-Pesticide Standard Using Rxi®-5Sil MS and Rtx®-200

Peaks
1.Methamidophos
2.Dichlorvos
3.1,2,3,5-Tetrachlorobenzene
4.Mevinphos
5.Acephate
6.Pentachlorobenzene
7.o-Phenylphenol
8.Tetrachloronitrobenzene (Tecnazene)
9.Omethoate
10.2,3,5,6-Tetrachloroaniline
11.Alpha-BHC
12.Hexachlorobenzene
13.Pentachloroanisole
14.Dimethoate
15.Beta-BHC
16.Pentachloronitrobenzene
17.Pentachlorobenzonitrile
18.Gamma-BHC
19.Chlorothalonil
20.Anthracene
21.Diazinon
22.delta-BHC
23.Pentachloroaniline
24.Vinclozolin
25.Carbaryl
26.Metalaxyl
27.Pentachlorothioanisole
28.Pirimiphos methyl
29.Methiocarb
30.Dichlofluanid
31.Malathion
32.Chlorpyrifos
33.Fenthion
34.DCPA methyl ester (Chlorthal-dimethyl)
35.Parathion
36.Cyprodinil
Peaks
37.Heptachlor epoxide
38.Thiabendazole
39.Captan
40.Folpet
41.Procymidone
42.Endosulfan I
43.Imazalil
44.4,4'-DDE
45.Dieldrin
46.Myclobutanil
47.Endrin
48.Endosulfan II
49.Oxadixyl
50.4,4'-DDD
51.2,4'-DDT
52.Carfentrazone ethyl
53.Endosulfan sulfate
54.Fenhexamid
55.4,4'-DDT
56.Propargite
57.Piperonyl butoxide
58.Iprodione
59.Bifenthrin
60.Dicofol
61.Fenpropathrin
62.Phosalone
63.Azinphos-methyl
64.cis-Permethrin
65.Coumaphos
66.trans-permethrin
67.Cypermethrin
68.Pyraclostrobin
69.Fluvalinate
70.Difenoconazole
71.Deltamethrin
72.Azoxystrobin
image
GC_FF1241
ColumnRxi®-5Sil MS 30 m, 0.25 mm ID, 0.25 µm (cat.# 13623)
Rtx®-200 1.3 m, 0.25 mm ID, 0.25 µm (cat.# 15124)
SampleCustom pesticide standard
Diluent:Acetonitrile
Conc.:500 pg/µL
Injection
Inj. Vol.:1.0 µL splitless (hold 1.0 min)
Liner:Premium 4 mm single taper w/wool (cat.# 23303.5)
Inj. Temp.:250 °C
Oven
Oven Temp.:Rxi®-5Sil MS: 90 °C (hold 1.0 min) to 310 °C at 5 °C/min (hold 2.0 min)
Rtx®-200: 95 °C (hold 1.0 min) to 315 °C at 5 °C/min (hold 2.0 min)
Carrier GasHe, corrected constant flow (2 mL/min)
Modulation
Modulator Temp. Offset:+20 °C
Second Dimension Separation Time:3 sec
Hot Pulse Time:0.9 sec
Cool Time between Stages:0.6 sec
DetectorMS
Mode:
Transfer Line Temp.:300 °C
Analyzer Type:TOF
Source Temp.:225 °C
Electron Energy:70 eV
Mass Defect:-20 mu/100 u
Ionization Mode:EI
Acquisition Range:45 to 550 amu
Spectral Acquisition Rate:100 spectra/sec
InstrumentLECO Pegasus® 4D GCxGC-TOFMS
NotesRtx®-200 (cat.# 15124) is a 2 m column. A 1.3 m section was cut off and used as the second dimension column.
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