○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
17
Figure 9
Primary herbicides arewell-resolved (USEPAMethod 8151).
On-column concentration:
see peak ID list;
Oven temp.:
90°C (hold1min.) to 300°C (hold10
min.) @9°C/min.;
Inj. port:
Direct, Uniliner
®
sleeve (cat.# 20335), at 200°C;
Detector:
ECD,
300°CwithAnode Purge;
Dead time:
1.86min.;
Head pressure:
12psi (constant);
Flow rate:
1.2mL/min. @120°C, Helium.
Rtx
®
-CLPesticides2
30m, 0.32mm ID, 0.25µm (cat.# 11324)
Rtx
®
-CLPesticides
30m, 0.32mm ID, 0.50µm (cat.# 11139)
Figure 8
0.32mm IDRtx
®
-CLPesticides andRtx
®
-CLPesticides2 columns provide good separation of
Method 508.1 pesticides.
On-column concentration:
see peak ID list;
Oven temp.:
120°C (hold1min.) to 300°C (hold10min.)
@ 9°C/min.;
Inj. port:
Direct, Uniliner
®
sleeve (cat.#20335), at 200°C;
Detector:
ECD, 300°Cwith
Anode Purge;
Dead time:
1.7min.;
Head pressure:
12psi (constant);
Flow rate:
1.4mL/min. @ 120°C, Helium.
Rtx
®
-CLPesticides
30m, 0.32mm ID, 0.50µm (cat.# 11139)
Rtx
®
-CLPesticides2
30m, 0.32mm ID, 0.25µm (cat.# 11324)
1. hexachloropentadiene 1000
2. etridiazole
500
3. chlorneb
500
4. hexachlorobenzene
1000
5. propachlor
100
6.
α
-BHC (
α
-HCH)
500
7. simazine
100
8.
γ
-BHC (
γ
-HCH)
5000
9. atrizine
1000
10. trifluralin
100
11. pentachloronitrobenzene 100
12.
β
-BHC (
β
-HCH)
100
13.
δ
-BHC (
δ
-HCH)
100
14. metribuzin
100
15. heptachlor
1000
16. aldrin
1000
17. chlorothalonil
1000
18. 4'4-dibromobiphenyl
1000
19. alachlor
1000
20. metalachlor
100
21. DCPA (decthal)
100
22. heptachlor epoxide
5000
23.
γ
-chlordane
100
24. cyanozine
100
25.
α
-chlordane
100
26. 4,4'-DDE
100
27. endosulfan I
100
28. dieldrin
500
29. endrin
100
30. chlorobenzilate
100
31. 4,4'-DDD
100
32. endosulfan II
100
33. 4,4'-DDT
100
34. endrin aldehyde
100
35. methoxychlor
100
36. endosulfan sulfate
100
37.
cis
-permethrin
1000
38.
trans
-permethrin
1000
pg/µL
6 8 10 12 14 16 18 20 min.
6 8 10 12 14 16 18 20 22
1
2
3
4
5,6
7
8,9
10,11,12
13
14
15
16,17
18,19
20,
21
22
38
37
36
35
34
33
32
30,31
29
28
27
26
24,25
23
1
2
3
4
5
7
6
10
9
14
13
17
11,8
15
22
38
37
36
35
34
33
32
31
21
18
25
27
26
16
23
29
30
28
24
min. 5
15
10
20
1
2
3
4
5
6
10
11
12
7 8
13
14
15
16
17
18
21
min. 5
15
10
20
1
2
3
4 5 6
7
8
9 10
11
12
13
14
15
16
17,18
19
20
21
19
20
12
20
1. dalaponmethyl ester
1000
2. 1,4-dichlorobenzene
500
3. 3,5-dichlorobenzoicacidmethyl ester 500
4. 4-nitroanisole
500
5. DCAAmethyl ester
500
6. dicambamethyl ester
50
7. MCPPmethyl ester
50000
8. MCPAmethyl ester
50000
9. dichloropropmethyl ester
200
10. 2,4-Dmethyl ester
200
11. pentachloroanisole
200
12. 4,4'-dibromooctafluorobiphenyl
50
13. 2,4,5-TP (silvex)methyl ester
50
14. chlorambenmethyl ester
500
15. 2,4,5-Tmethyl ester
50
16. 2,4-DBmethyl ester
200
17. piclorammethyl ester
500
18. bentazonmethyl ester
500
19. dinosebmethyl ester
150
20. DCPAdimethyl ester
500
21. acifluorfenmethyl ester
500
pg/
µL
9
