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RestekTrademarks:
CarboPrep, Rtx, Uniliner, and the Restek logo
OtherTrademarks:
Freon (E.I. duPont deNemours&Co., Inc.), Florisil (U.S. Silica Co.)
Figure1
CarboPrep
™
90SPECleanup forMethod 8141AOPPs ProvidesQuantitation-Level Accuracy
Product Listing:
Description
cat. #
Rtx
®
-CLPesticides, 30m, 0.32mm ID, 0.50µm 11139
Rtx
®
-OPPesticides, 30m, 0.32mm ID, 0.50µm 11239
CarboPrep
™
90cartridge3mL, 250mg
26091
Triphenylphosphate Standard
32281
Description
cat. #
Tributylphosphate Standard
32280
OPPesticideCalibration MixA
32277
OPPesticideCalibration MixB
32278
Rtx
®
-CLPesticides - 30m, 0.32mmID, 0.50µm cat.# 11139
Oven temp:
120°C (hold 10 min.) to 250°C (hold 15 min.) @ 4°C/min.
Inj.:
220°C, split/splitless sleeve
Det.:
295°C, Agilent (HP) 5890 FPD
Carrier gas:
helium
Standards:
OP Pesticide Calibration Mix A cat.# 32277, OP Pesticide Calibration Mix B cat.# 32278,
OP Pesticide Mix C & D custom, Tributylphosphate surrogate standard cat.# 32280
Triphenylphosphate surrogate standard, cat.# 32281
Sample:
1.0mL hexane. Standards were spiked at 0.20µg/mL, injection volume 1µL.
Cartridge:
3mL, 250mg CarboPrep™ 90, cat.# 26091
Cartridge conditioning:
Apply 3mL of hexane and pass through cartridge.
Extract clean-up:
Prepare collection rack with vials, place under each cartridge. Add 1.0mL of extracted sample to cartridge and
collect all solutions passing through. Add 20mL of CH
2
Cl
2
:hexane (20:80) to cartridge and allow it to elute using
gravity feed.
Extract concentration:
Solvent exchange extract to hexane. Do not allow extracts to dry completely. Concentrate extracts to 1.0mL.
Sample is ready for analysis.
1. dichlorvos
hexamethylphosphoramide
(HMPA)
2. trichlorfon
3. mevinphos
4. demeton-o
5. thionazin
6. ethoprop
7. phorate
8. naled
9. sulfotepp
10. TEPP
11. tributylphosphate
(surrogate)
12. fonophos
13. terbufos
14. demeton-s
15. dicrotophos
16. diazinon
17. disulfoton
18. dimethoate
19. dioxathion
20. monocrotophos
21. dichlorofenthion
22. chlorpyrifos methyl
23. ronnel
24. phosphamidon isomer
25. merphos
26. chlorpyrifos
27. fenthion
28. parathion-methyl
29. aspon
30. trichloronate
31. malathion
32. fenitrothion
33. phosphamidon
34. parathion-ethyl
35. chlorfenvinphos
36. tokuthion
37. merphos oxone
(oxidation product of merphos)
38. stirofos
39. crotoxyphos
40. sulfopros
41. famphur
42. carbophenothion
43. fensulfothion
44. triphenylphosphate (surrogate)
45. leptophos
46. ethion
47. phosmet
48. EPN
tri-o-cresyl phosphate (TOCP)
49. azinphos-methyl
50. azinphos-ethyl
51. coumaphos
0
5
10
15
20
25
30
35
40
45
50
55 min.
13
10
9
8
7
5
6
3
2
1
4
11
17
18
24
23
22
21
20
14
15
16
19
51
50
49
48
45
46
47
43
44
40
41
42
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
12
Tube blank
Standard
extract
(HMPA)
(TOCP)
Restek Recommended
