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www.restek.comGC COLUMNS |
GENERAL-PURPOSE COLUMNS
Rtx®-35
Rtx®-35 Columns
(fused silica)
(midpolarity phase; Crossbond® diphenyl dimethyl polysiloxane)
• General-purpose columns for organochlorine pesticides, PCB congeners
(e.g., Aroclor mixes), herbicides, pharmaceuticals, sterols, rosin acids,
phthalate esters.
• Temperature range: 40 °C to 320 °C.
• Equivalent to USP G42 phase.
An Rtx®-35 column is a popular confirmation column for pesticides and herbicides in
conjunction with an Rtx®-5 or Rtx®-1701 column. The higher phenyl content causes
useful elution order and retention time changes.
Rtx®-35 Structure
CH
3
CH
3
Si
65%
O
Si
35%
O
Similar to: (35%-phenyl)-methylpolysiloxane
Rtx®-35 Amine columns........
. page 101also available
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Time (min)
Organophosphorus Pesticides US EPA Method 8140/8141/8141A on Rtx®-35
GC_EV00696
Column
Rtx®-35, 30 m, 0.32 mm ID, 0.25 µm (cat.# 10424)
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.:
0.1µg/mL US EPA Method 8141A Custom Standard Mixes (100ng/mL)
Injection
Inj. Vol.:
0.5 µL splitless (hold 5 min)
Liner:
Drilled Uniliner (hole near top) (cat.# 21054-214.1)
Inj. Temp.:
220 °C
Oven
Oven Temp.:
100 °C to 180 °C at 10 °C/min (hold 2 min) to 300 °C at 18 °C/min
(hold 10 min)
Carrier Gas
He, constant pressure
Linear Velocity:
42 cm/sec @ 60 °C
Detector
FPD@ 280 °C
Peaks
1. Dichlorvos
2. Hexamethyl
phosphoramide
3. Mevinphos
4. Trichlorfon
5. Tributyl phosphate (SS)
6. Demeton-o
7. TEPP
8. Thionazin
9. Ethoprop
10. Sulfotepp
11. Naled
12. Phorate
13. Dicrotophos
14. Demeton-S
15. Terbufos
16. Monocrotophos
17. Diazinon
18. Fonophos
19. Disulfoton
20. Dioxathion
21. Dimethoate
22. Phosphamidon isomer
23. Dichlorofenthion
24. Chlorpyrifos methyl
25. Phosphamidon
26. Ronnel
27. Methyl parathion
28. Aspon
29. Trichloronate
30. Chlorpyrifos
31. Fenitrothion
32. Merphos
33. Malathion
34. Parathion-ethyl
35. Fenthion
36. Chlorfenvinphos
37. Crotoxyphos
38. Merphos oxone
39. Prothiofos
40. Stirofos
41. Ethion
42. Sulprofos
43. Fensulfothion
44. Carbofenothion
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
similar
phases
HP-35, DB-35, ZB-35
15-Meter
30-Meter
ID
df
temp. limits
cat.#
price
cat.#
price
0.25 mm 0.25 µm
40 to 320 °C
10420
10423
0.50 µm
40 to 310 °C
10435
10438
1.00 µm
40 to 290 °C
10453
0.32 mm 0.25 µm
40 to 320 °C
10421
10424
0.50 µm
40 to 310 °C
10439
1.00 µm
40 to 290 °C
10454
0.53 mm 0.50 µm
40 to 300 °C
10437
10440
1.00 µm
40 to 290 °C
10455
1.50 µm
40 to 280 °C
10470
3.00 µm 40 to 240/260 °C
10485
10-Meter
20-Meter
ID
df
temp. limits
cat.#
price
cat.#
price
0.18 mm 0.20 µm 40 to 300/320 °C
40402
0.40 µm 40 to 290/310 °C
40410
40411