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Comparison of Conventional vs. LPGC-MS Pesticides Analysis

GC_FS0573
PeaksConc.
(µg/mL)
tR (30 m)tR (LPGC)
1.Chloroneb0.410.3374.225
2.Pentachlorobenzene0.410.5624.320
3.α-BHC0.412.9564.939
4.Hexachlorobenzene0.413.1544.997
5.Pentachloroanisole0.413.2735.017
6.β-BHC0.413.6105.106
7.δ-BHC0.413.7735.154
8.γ-BHC0.414.3415.293
9.Tefluthrin0.414.4665.232
10.Endosulfan ether0.414.8035.419
11.Transfluthrin0.415.4155.490
12.Heptachlor0.415.5045.592
13.Pentachlorothioanisole0.416.0865.745
14.Anthraquinone0.416.2795.803
15.Aldrin0.416.3175.803
16.4,4'-Dichlorobenzophenone0.416.5115.827
17.Fenson0.416.7085.885
18.Isodrin0.416.9875.980
19.Heptachlor epoxide0.417.2356.035
20.Bioallethrin0.417.4055.994
21.Chlorbenside0.417.6266.123
22.trans-Chlordane0.417.7666.167
23.2,4'-DDE0.417.8716.171
24.Endosulfan I0.418.0526.249
25.cis-Chlordane0.418.1096.256
26.trans-Nonachlor0.418.2186.279
27.Chlorfenson0.418.2326.226
28.4,4'-DDE0.418.5696.337
29.Dieldrin0.418.6306.395
30.2,4'-DDD0.418.7566.395
31.Ethylan0.419.1066.460
PeaksConc.
(µg/mL)
tR (30 m)tR (LPGC)
32.Endrin0.419.1166.550
33.Endosulfan II0.419.3036.528
34.4,4'-DDD0.419.4806.575
35.2,4'-DDT0.419.5626.603
36.cis-Nonachlor0.419.5926.633
37.Endrin aldehyde0.419.7156.674
38.4,4'-Methoxychlor olefin0.420.0796.708
39.Endosulfan sulfate0.420.2256.803
40.4,4'-DDT0.420.2906.783
41.2,4'-Methoxychlor0.420.5216.827
42.Resmethrin0.420.7935.980
43.Endrin ketone0.421.2357.082
44.Tetramethrin 10.421.2456.990
45.Tetramethrin 20.421.3887.018
46.Bifenthrin0.421.4027.011
47.Phenothrin 10.421.8417.130
48.Tetradifon0.421.9397.211
49.Phenothrin 20.421.9567.157
50.Mirex0.422.4367.388
51.lambda-Cyhalothrin0.422.5457.293
52.Acrinathrin0.422.7427.310
53.cis-Permethrin0.423.3887.535
54.trans-Permethrin0.423.5347.565
55.Cyfluthrins0.424.065-24.3107.698-7.745
56.Cypermethrins0.424.436-24.6777.793-7.847
57.Flucythrinate 10.424.6777.844
58.Flucythrinate 20.424.8987.899
59.Fenvalerate 10.425.5008.079
60.tau-Fluvalinate 10.425.7158.113
61.Fenvalerate 20.425.7328.140
62.tau-Fluvalinate 20.425.7738.113
63.Deltamethrin0.426.3378.324
Column
SampleGC multiresidue pesticide standard #2 (cat.# 32564)
GC multiresidue pesticide standard #6 (cat.# 32568)
Diluent:Acetonitrile
Conc.:2 µg/mL
Injection
Inj. Vol.:2 µL split (split ratio 10:1)
Liner:Topaz 4.0 mm ID straight inlet liner w/ wool (cat.# 23444)
Inj. Temp.:250 °C
Oven
Carrier GasHe
DetectorTSQ 8000
SIM Program:35-550 m/z
Transfer Line Temp.:290 °C
Analyzer Type:Quadrupole
Source Temp.:330 °C
Tune Type:PFTBA
Ionization Mode:EI
InstrumentThermo Scientific TSQ 8000 Triple Quadrupole GC-MS
NotesConventional (30 m) Analysis:
Column: Rxi-5ms, 30 m, 0.25 mm ID, 0.25 µm (cat.# 13423)
Temp. program: 90 °C (hold 1 min) to 330 °C at 8.5 °C/min (hold 5 min)
Flow: 1.4 mL/min

LPGC-MS Analysis:
Column: Low-pressure GC column kit (factory-coupled restrictor column [5 m x 0.18 mm ID] and Rtx-5ms analytical column [15 m, 0.53 mm ID, 1 µm plus 1 m integrated transfer line on the outlet end]) (cat.# 11800)
Temp. program: 80 °C (hold 1 min) to 320 °C at 35 °C/min (hold 5 min)
Flow: 2 mL/min