CHLORINATED AND ORGANONITROGEN HERBICIDES (PATCH): METHOD 9201, Issue 1, dated 15 January 1998 - Page 6 of 11
TABLE 2. USEFUL GAS CHROMATOGRAPHIC COLUMNS AND CONDITIONS (1) Parameter
Conditions
Column Parameters: Stationary phase(2)
DB-1
DB-5
DB-5ms
DB-17(3)
DB-1701(4) DB-210(4)
DB-225(4)
DB-WAX
Length (meters)
30
30
30
30
30
30
30
30
I.D. (millimeters)
0.25
0.32
0.32
0.25
0.53
0.32
0.32
0.32
Film thickness (µm)
0.25
0.50
1.00
0.25
1.00
0.25
0.25
0.50
120
50
90
90
90
140
140
160
0
1
1
1
0.5
0
0
0
5
10
35
35
15
3
5
5
160
160
180
5
5
2
200
200
210
3
3
10
Oven Temperatures: Initial temperature (oC) Initial temperature hold time (min.) o
First temperature ramp ( C/min.) o
First intermediate temperature ( C) o
Second temperature ramp ( C/min.) o
Second intermediate temperature ( C) Third temperature ramp (oC/min.) o
Final temperature ( C)
250
290
230
230
235
215
220
250
4
5
9
9
10
5
15
20
Helium
Helium
Helium
Helium
Helium
Helium
Helium
Helium
Head pressure (p.s.i.)
10
10
12
12
3.5
10
10
10
Injection volume (µL)
2-4
2-4
2-4
2-4
2
2-4
2-4
2-4
splitless
splitless
splitless
splitless
splitless
splitless
splitless
splitless
Final temperature hold time (min.) Mobile Phase and Injection conditions: Carrier Gas
Injection mode
(1) Actual column and conditions may vary depending on analyte, interferences, and analytical objectives. The conditions given correspond to Table 4. (2) Other types of fused silica capillary columns also may work well. (3) Column and conditions used for method evaluation. Good column for separation of atrazine and simazine. (4) Useful columns for separating cyanazine from other listed analytes.
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition
