Comparison of Conventional vs. LPGC-MS Pesticides Analysis

	Peaks	Conc. (µg/mL)	t_R (30 m)	t_R (LPGC)
1.	Chloroneb	0.4	10.337	4.225
2.	Pentachlorobenzene	0.4	10.562	4.320
3.	α-BHC	0.4	12.956	4.939
4.	Hexachlorobenzene	0.4	13.154	4.997
5.	Pentachloroanisole	0.4	13.273	5.017
6.	β-BHC	0.4	13.610	5.106
7.	δ-BHC	0.4	13.773	5.154
8.	γ-BHC	0.4	14.341	5.293
9.	Tefluthrin	0.4	14.466	5.232
10.	Endosulfan ether	0.4	14.803	5.419
11.	Transfluthrin	0.4	15.415	5.490
12.	Heptachlor	0.4	15.504	5.592
13.	Pentachlorothioanisole	0.4	16.086	5.745
14.	Anthraquinone	0.4	16.279	5.803
15.	Aldrin	0.4	16.317	5.803
16.	4,4'-Dichlorobenzophenone	0.4	16.511	5.827
17.	Fenson	0.4	16.708	5.885
18.	Isodrin	0.4	16.987	5.980
19.	Heptachlor epoxide	0.4	17.235	6.035
20.	Bioallethrin	0.4	17.405	5.994
21.	Chlorbenside	0.4	17.626	6.123
22.	trans-Chlordane	0.4	17.766	6.167
23.	2,4'-DDE	0.4	17.871	6.171
24.	Endosulfan I	0.4	18.052	6.249
25.	cis-Chlordane	0.4	18.109	6.256
26.	trans-Nonachlor	0.4	18.218	6.279
27.	Chlorfenson	0.4	18.232	6.226
28.	4,4'-DDE	0.4	18.569	6.337
29.	Dieldrin	0.4	18.630	6.395
30.	2,4'-DDD	0.4	18.756	6.395
31.	Ethylan	0.4	19.106	6.460

	Peaks	Conc. (µg/mL)	t_R (30 m)	t_R (LPGC)
32.	Endrin	0.4	19.116	6.550
33.	Endosulfan II	0.4	19.303	6.528
34.	4,4'-DDD	0.4	19.480	6.575
35.	2,4'-DDT	0.4	19.562	6.603
36.	cis-Nonachlor	0.4	19.592	6.633
37.	Endrin aldehyde	0.4	19.715	6.674
38.	4,4'-Methoxychlor olefin	0.4	20.079	6.708
39.	Endosulfan sulfate	0.4	20.225	6.803
40.	4,4'-DDT	0.4	20.290	6.783
41.	2,4'-Methoxychlor	0.4	20.521	6.827
42.	Resmethrin	0.4	20.793	5.980
43.	Endrin ketone	0.4	21.235	7.082
44.	Tetramethrin 1	0.4	21.245	6.990
45.	Tetramethrin 2	0.4	21.388	7.018
46.	Bifenthrin	0.4	21.402	7.011
47.	Phenothrin 1	0.4	21.841	7.130
48.	Tetradifon	0.4	21.939	7.211
49.	Phenothrin 2	0.4	21.956	7.157
50.	Mirex	0.4	22.436	7.388
51.	lambda-Cyhalothrin	0.4	22.545	7.293
52.	Acrinathrin	0.4	22.742	7.310
53.	cis-Permethrin	0.4	23.388	7.535
54.	trans-Permethrin	0.4	23.534	7.565
55.	Cyfluthrins	0.4	24.065-24.310	7.698-7.745
56.	Cypermethrins	0.4	24.436-24.677	7.793-7.847
57.	Flucythrinate 1	0.4	24.677	7.844
58.	Flucythrinate 2	0.4	24.898	7.899
59.	Fenvalerate 1	0.4	25.500	8.079
60.	tau-Fluvalinate 1	0.4	25.715	8.113
61.	Fenvalerate 2	0.4	25.732	8.140
62.	tau-Fluvalinate 2	0.4	25.773	8.113
63.	Deltamethrin	0.4	26.337	8.324

Column
Standard/Sample	GC 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 Gas	He

Detector	TSQ 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
Instrument	Thermo Scientific TSQ 8000 Triple Quadrupole GC-MS
Notes	Conventional (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

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