EPA and EU Phthalates on Rtx-440

1.Dimethyl phthalate
2.Diethyl phthalate
3.Benzyl benzoate
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
9.Bis(2-ethoxyethyl) phthalate
10.Di-n-pentyl phthalate
11.Di-n-hexyl phthalate
12.Butyl benzyl phthalate
13.Hexyl-2-ethylhexyl phthalate
14.Bis(2-butoxyethyl) phthalate
15.Bis(2-ethylhexyl) phthalate
16.Dicyclohexyl phthalate
17.Di-n-octyl phthalate
18.Diisononyl phthalate
19.Diisodecyl phthalate
20.Dinonyl phthalate
ColumnRtx®-440, 30 m, 0.25 mm ID, 0.25 µm (cat.# 12923)
SampleBenzyl benzoate (cat.# 31847)
EPA Method 8061A phthalate esters mixture (cat.# 33227)
Diluent:Methylene chloride
Conc.:50.0 µg/mL (80 μg/mL for internal standard benzyl benzoate)
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
Split Vent Flow Rate:3 mL/min
Oven Temp.:200 °C (hold 0.5 min) to 330 °C at 30 °C/min (hold 1 min)
Carrier GasHe, constant linear velocity
Linear Velocity:66.7 cm/sec, 39.5 psi, 272.3 kPa @ 200 °C
Scan Program:
GroupStart Time
Scan Range
Scan Rate
Transfer Line Temp.:300 °C
Analyzer Type:Quadrupole
Source Temp.:280 °C
Electron Energy:70 eV
Solvent Delay Time:0.9 min
Tune Type:PFTBA
Ionization Mode:EI
InstrumentShimadzu 2010 GC & QP2010+ MS
NotesThe constant linear velocity of 66.7 cm/sec is equal to 3 mL/min @ 200 °C.
The MS scan interval is 0.1 sec.
AcknowledgementThe authors would like to thank Shimadzu Corporation for their consultation with the operation of the QP2010 Plus GC-MS instrument.
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