CHLORINATED AND ORGANONITROGEN HERBICIDES (AIR SAMPLING): METHOD 5602, Issue 1, dated 15 January 1998 - Page 9 of 14
TABLE 4. APPROXIMATE RETENTION TIMES OF SELECTED CHLORINATED ORGANONITROGEN AND CARBOXYLIC ACID COMPOUNDS(1) Compound (by retention time on DB5) Capillary Column:
Retention Times in Minutes (Capillary Column by Approximate Increase in Polarity) DB-1
DB-5
1
CDAA
2
2,4-D, ME(2)
3
(2)
16.72
2,4-D, iPE(3)
19.20
5
Dicamba, ME
DB-5ms
DB-17
DB-1701
10.13
10.25
12.25
DB-210
DB-225
DB-WAX
14.37
Simazine
12.90
19.42
12.02
12.91
16.52
7.59
16.90
18.62
6
Atrazine
12.96
19.50
12.18
12.59
16.34
7.79
15.93
17.17
7
Propazine
8
2,4-DB, ME(2)
9
Metribuzin
9.72
22.01
23.08
10
Dimethenamid
11
Acetochlor
12
Alachlor
14.37
21.44
15.24
15.19
19.78
12.95
17.45
14.95
13
Cyanazine
14.97
22.23
17.17
19.99
27.07
19.67
30.00
36.00
14
Metolachlor
15.11
22.26
16.96
16.67
22.17
14.85
19.43
15.96
15
Pendimethalin
16
2,4-D, BE
(4)
17.01
23.73
21.46
20.60
26.25
16.79
25.86
20.50
17
2,4-D, EH
(5)
17.70
24.38
22.73
20.12
26.71
17.17
23.49
18.55
19.61 14.03 13.89
21.10
17.51
21.13 21.18
14.66
22.98
18.67
(1) Actual retention times will vary with individual columns and chromatographic conditions. Column conditions are give in Table 2. Data is from Backup Data Report [1]. (2) ME = Methyl ester. Methyl ester formed by reaction of the free acid form with diazomethane. (3) iPE = Isopropyl ester. (4) BE = 2-Butoxyethyl ester. (5) EH = 2-Ethylhexyl ester.
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition
