EPA Method 541 UCMR4 Standard at 10x the Method Reporting Limit on Stabilwax (SIM)

	Peaks	t_R (min)	Conc. (µg/mL)
1.	2-Propen-1-ol	6.94	0.13
2.	1-Butanol-d10 (SS)	7.25	0.25
3.	1-Butanol	7.38	0.50
4.	2-Methoxyethanol	7.97	0.10
5.	Chlorobenzene-d5 (IS)	8.66	0.25

Injection
Column	Stabilwax, 30 m, 0.25 mm ID, 0.50 µm (cat.# 10638)
Standard/Sample	Method 541 UCMR4 standard (cat.# 572263)
	Method 541 UCMR4 internal standard (cat.# 572268)
	Method 541 UCMR4 surrogate standard (cat.# 572267)
Diluent:	Dichloromethane
Inj. Vol.:	1 µL pulsed splitless (hold 0.50 min)
Liner:	Topaz 4 mm ID single taper inlet liner w/wool (cat.# 23303)
Inj. Temp.:	200 °C
Pulse Pressure:	10 psi (68.9kPa)
Pulse Time:	0.55 min
Purge Flow:	100 mL/min
Oven
Oven Temp.:	30 °C (hold 0.5 min) to 110 °C at 10 °C/min to 200 °C at 25 °C/min (hold 6 min)
Carrier Gas	He, constant flow
Flow Rate:	0.9 mL/min

Detector

Mode:

SIM

SIM Program:

Group	Start Time (min)	Ion(s) (m/z)	Dwell (ms)
1	6.0	39, 55, 57, 58	25
2	7.2	41, 43, 46, 50, 55, 56, 63, 64	25
3	7.7	45, 47, 58, 76	25
4	8.3	76, 117, 119	25

Transfer Line Temp.:

200 °C

Analyzer Type:

Quadrupole

Source Type:

Stainless Steel

Drawout Plate:

6 mm ID

Source Temp.:

230 °C

Quad Temp.:

150 °C

Solvent Delay Time:

6.0 min

Tune Type:

BFB

Ionization Mode:

Instrument

HP6890 GC & 5973 MSD

Notes

The 30 m x 0.25 mm ID x 0.5 µm Stabiliwax column offers equivalent selectivity to the ZB-Wax Plus chromatogram published in EPA Method 541, but with a significantly faster analysis time under the same GC conditions. Chlorobenzene elutes at 13.14 min in the method and at 8.66 minutes on the Stabiliwax column.

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