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EPA and EU Phthalates on Rtx-CLPesticides

ColumnRtx-CLPesticides, 30 m, 0.25 mm ID, 0.25 µm (cat.# 11123)
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)
Injection
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
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
DetectorMS
Mode:Scan
Scan Program:
GroupStart Time
(min)
Scan Range
(amu)
Scan Rate
(scans/sec)
10.959-400-
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 equivalent to 3 mL/min @ 200 °C. The MD 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.