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• 15 •
GC: splitless, purge on 1.0 min.; Oven program:
80°C (hold 0.5 min.) to 280°C @ 12°C/min. (hold
10 min.); Injector: 200°C, Inlet liner: 4mm single
gooseneck Siltek™ inlet liner; Detector: FPD @
250°C; Dead time: @ 80°C = 1.03 min.;
Injection: 1µL, 100ng/mL OP Pesticide
Calibration Mix
dual-column injector
Detector: FPD @ 250°C;
Dead time: @ 80°C = 0.98 min.
Figure 1
The Rtx® -OPPesticides and Rtx®-OPPesticides2 column pair completely separates all target compounds in US EPA Method 8141A.
1. dichlorvos
2. hexamethylphosphoramide
3. mevinphos
4. trichlorfon
5. TEPP
6. demeton- o
7. tributyl phosphate (SS)
8. thionazin
9. ethoprop
10. naled
11. sulfotepp
12. phorate
13. dicrotophos
14. monocrotophos
15. demeton-s
16. terbufos
17. dimethoate
18. diazinon
19. dioxathion
20. fonophos
21. disulfoton
22. phosphamidon isomer
(breakdown product)
23. dichlorofenthion
24. phosphamidon
25. chlorpyrifos methyl
26. parathion-methyl
27. ronnel
28. aspon
29. fenitrothion
30. malathion
31. chlorpyrifos
32. trichloronate
33. parathion-ethyl
34. fenthion
35. merphos
36. chlorfenvinphos
37. crotoxyphos
38. stirofos
39. tokuthion
40. merphos oxon
(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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19,20
21
22
23
24
25
26
27
28
29
31
32,33
53
52
51
50
49
48 47
46
45
44
43
42
41
40
39
38
37
36
35
34
30
1
2 4
3
6
8
9
12
10,11
7
18
16
5,20
19,21
15
13,14
31
28
32
26,30
29
22
23
25
17
27,35
34
39
24
36,33
40
38 37
43
44,41
46
4942
50
47,48
45
51
52
53
8 10 12 14 16 18 20 22
6 6 10 12 14 16 18 20
30m, 0.32mm ID, 0.50µm
Rtx®-OPPesticides
(cat.# 11239)
30m, 0.32mm ID, 0.32µm
Rtx®-OPPesticides2
(cat.# 11241)
GC_EV00393
GC_EV00394