5
Figure 6
Quantify volatile ingredients in an all-purpose cleaner, using anRtx
®
-VMS column.
Figure 5
Excellent, alternative selectivity for cleaning solvents, using anRtx
®
-VMS column.
Rtx
®
-VMS, 60m, 0.25mm ID, 1.4µm (cat.# 19916)
Sample:
1% each solvent inmethanol
Inj.:
1.0µL split injection (100:1), 4mm inlet liner (cat.# 20814)
Inj. temp.:
250°C
Carrier gas:
hydrogen, constant flow
Flow rate:
1.5mL/min.
Oven temp.:
60°C (1min. hold) to 138°C@ 4°C/min.,
to 145°C@ 2°C/min., to 210°C@ 15°C/min.,
to 230°C@ 5°C/min.
Det.:
FID@ 250°C
1. methanol
2. ethanol
3.
iso
-propanol
4.
tert
-butanol
5.
n
-propanol
6.
iso
-butanol
7. methyl Cellosolve
®
8.
n
-butanol
9. Cellosolve
®
10. ethylene glycol
11. butyl Cellosolve
®
12. limonene
13. dipropylene glycol monomethyl ether (DPGMME)
14. diethylene glycol ethyl ether (DEGEE)
15. phenyl Cellosolve
®
16. tripropylene glycol monomethyl ether (TPGMME)
GC_FF00645
Rtx
®
-VMS, 60m, 0.25mm ID, 1.4µm (cat.# 19916)
Sample:
Approx. 5% sample inmethanol
Inj.:
1.0µL split injection (100:1), 4mm inlet liner (cat.# 20814)
Inj. temp.:
250°C
Carrier gas:
hydrogen, constant flow
Flow rate:
1.5mL/min.
Oven temp.:
60°C (1min. hold) to 138°C@ 4°C/min. to 145°C@
2°C/min. to 210°C@ 15°C/min. to 230°C@ 5°C/min.
Det.:
FID@ 250°C
GC_FF00646
1. butyl Cellosolve
®
2. limonene
High initial temperature,
for faster results
Excellent resolution of
short-chain alcohols
