OrganophosphorusPesticides
RecommendedColumns
SamplePreparation
Organophosphorus pesticides (OPPs) are commonly used as insecticides, fungicides, and herbicides. Due to their widespread use
however, they have become an environmental concern. We reccommend the Rtx®-OPPesticides2 column for separating
organophosphoruspesticides (OPP).Separation is improved, andanalysis time is significantly reduced, compared toother columns.
The extendedupper temperature limit of this phase (330°C) allows analysts tobake out highmolecularweight contamination typ-
ically associatedwithpesticide samples.The lowbleed column is aperfectmatch for sensitive detection systems.
Figure1
OrganophosphoruspesticidesonanRtx®-OPPesticides2column.
GC_EV00602
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. chlorpyrifosmethyl
25. phosphamidon
26. parathion-methyl
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. tokuthion
40. merphos oxone
(breakdown product)
41. ethion
42. fensulfothion
43 bolstar
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
Column:
Rtx
®
-OPPesticides2, 30m, 0.25mm ID, 0.25µm (cat.# 11243)
Sample:
US EPAMethod 8141A Custom StandardMix 1µL 100ppm
(100ng on column)
Triphenylphosphate Standard (cat.# 32281)
Tributylphosphate Standard (cat.# 32280)
8140/8141OP Pesticides CalibrationMix A (cat.# 32277)
8141OP Pesticides CalibrationMix B (cat.# 32278)
CustomMixes: Call Restek for Information
Inj.:
1.0µL splitless (hold 0.4min.), 4mm double
gooseneck inlet liner (cat.# 20785)
Inj. temp.:
250°C
Carrier gas:
helium, constant flow
Flow rate:
1.0mL/min.
Oven temp.:
80°C (hold 0.5min.) to 140°C@ 20°C/min.
to 210°C@ 4°C/min. (hold 1min.) to
280°C@ 30°C (hold 5min.)
Det:
MS
Transfer line temp.: 280°C
Scan range:
35-400amu
Ionization:
EI
Rtx®-OPPesticides2Columns (fusedsilica)
ID df (µm)
temp. limits
length cat.#
price
0.18mm 0.20 -20 to 310/330°C 20-Meter 11244
$430
0.25mm 0.25 -20 to 310/330°C 30-Meter 11243
$490
0.32mm 0.32 -20 to 310/330°C 30-Meter 11241
$510
0.53mm 0.50 -20 to 310/330°C 30-Meter 11242
$565
didyouknow?
We can supplyall your organophosphate standards—
Seeour catalogorwebsite for details.
10
CarboPrep™Cartridges
SPE Cartridge
Tube Volume, BedWeight
qty.
cat#
price
CarboPrep™ 90
3mL, 250mg
50-pk.
26091
$105
CarboPrep™ 90
6mL, 500mg
30-pk.
26092
$119
Excellent forPesticideResidueCleanup!
