Organophosphorus Pesticides U.S. EPA Method 8141A on Rtx-OPPesticides2

	Peaks
1.	Dichlorvos
2.	Hexamethylphosphoramide
3.	Mevinphos
4.	Trichlorfon
5.	TEPP
6.	Demeton-o
7.	Thionazin
8.	Tributyl phosphate (IS)
9.	Ethoprop
10.	Naled
11.	Sulfotepp
12.	Phorate
13.	Dicrotophos
14.	Demeton-S
15.	Monocrotophos
16.	Terbufos
17.	Dimethoate
18.	Dioxathion
19.	Fonophos
20.	Diazinon
21.	Disulfoton
22.	Phosphamidon isomer
23.	Dichlorofenthion
24.	Chlorpyrifos methyl
25.	Phosphamidon
26.	Methyl parathion

	Peaks
27.	Ronnel
28.	Fenitrothion
29.	Aspon
30.	Malathion
31.	Chlorpyrifos
32.	Trichloronate
33.	Parathion-ethyl
34.	Fenthion
35.	Merphos
36.	Chlorfenvinphos
37.	Crotoxyphos
38.	Stirofos
39.	Prothiofos
40.	Merphos oxone (breakdown product)
41.	Ethion
42.	Fensulfothion
43.	Sulprofos
44.	Carbophenothion
45.	Famphur
46.	Triphenyl phosphate (SS)
47.	Epn
48.	Phosmet
49.	Leptophos
50.	Tri-o-cresyl phosphate
51.	Azinphos-methyl
52.	Azinphos-ethyl
53.	Coumaphos

GC_EV00602

Column	Rtx-OPPesticides2, 30 m, 0.25 mm ID, 0.25 µm (cat.# 11243)
Sample	Triphenylphosphate (cat.# 32281)
	Tributylphosphate (cat.# 32280)
	8140/8141 OP pesticide calibration mix A (cat.# 32277)
	8141 OP pesticide calibration mix B (cat.# 32278)
Conc.:	100 ppm (100 ng on-column)
Injection
Inj. Vol.:	1.0 µL splitless (hold 0.4 min)
Liner:	Double taper splitless (4 mm) (cat.# 20785)
Inj. Temp.:	250 °C
Oven
Oven Temp.:	80 °C (hold 0.5 min) to 140 °C at 20 °C/min to 210 °C at 4 °C/min (hold 1 min) to 280 °C at 30 °C/min (hold 5 min)
Carrier Gas	He, constant flow
Flow Rate:	1.0 mL/min
Detector	MS
Mode:	Scan
Transfer Line Temp.:	280 °C
Analyzer Type:	Quadrupole
Ionization Mode:	EI
Scan Range:	35-400 amu
Notes	U.S. EPA Method 8141A custom standard mix. Additional mixes not shown. Contact Restek for more information.

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