EPA Method 8061A Phthalates on Rtx-440

	Peaks
1.	Dimethyl phthalate
2.	Diethyl phthalate
3.	Benzyl benzoate (IS)
4.	Diisobutyl phthalate
5.	Di-n-butyl phthalate
6.	Bis(2-methoxyethyl) phthalate
7.	Bis[4-methyl-2-pentyl] phthalate isomer 1
8.	Bis[4-methyl-2-pentyl] phthalate isomer 2

Injection
Column	Rtx-440, 30 m, 0.25 mm ID, 0.25 µm (cat.# 12923)
Standard/Sample	EPA Method 8061A phthalate esters mixture (cat.# 33227)
	Benzyl benzoate (cat.# 31847)
Diluent:	Methylene chloride
Conc.:	80 µg/mL EPA 8061A phthalates (20 μg/mL internal standard)
Inj. Vol.:	1 µL split (split ratio 20:1)
Liner:	Premium 3.5 mm Precision liner w/wool (cat.# 23320.1)
Inj. Temp.:	280 °C
Oven
Oven Temp.:	150 °C (hold 1 min) to 300 °C at 20 °C/min (hold 5 min)
Carrier Gas	He, constant linear velocity
Linear Velocity:	50 cm/sec, 22.9 psi, 157.9 kPa @ 150 °C

Detector

Mode:

Scan

Scan Program:

Group	Start Time (min)	Scan Range (amu)	Scan Rate (scans/sec)
1	2	50-500	-

Transfer Line Temp.:

300 °C

Analyzer Type:

Quadrupole

Source Temp.:

280 °C

Electron Energy:

70 eV

Solvent Delay Time:

2 min

Tune Type:

PFTBA

Ionization Mode:

Instrument

Shimadzu 2010 GC & QP2010+ MS

Notes

The linear velocity is 50 cm/sec, which is approximately 1.75 mL/min at 150 °C.
The MS scan interval is 0.1 sec.

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