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Topaz Liner Lot-to-Lot Reproducibility for Endrin and DDT Breakdown

PeakstR (min)Conc.
(ng/mL)
1.4,4'-DDE10.670*
2.Endrin10.90250
3.4,4'-DDD11.067*
4.Endrin aldehyde11.177*
5.4,4'-DDT11.464100
6.Endrin ketone11.976*
*Breakdown products
image
GC_EV1450
ColumnRxi-5ms, 15 m, 0.25 mm ID, 0.25 µm (cat.# 13420)
SampleEndrin (50 ng/mL) and DDT (100 ng/mL)
Diluent:n-Hexane
Injection
Inj. Vol.:1 µL splitless (hold 1.2 min)
Liner:Topaz 4.0 mm single taper with wool (cat.# 23303)
Inj. Temp.:250 °C
Purge Flow:20 mL/min
Oven
Oven Temp.:50 °C (hold 1.2 min) to 240 °C at 20 °C/min to 265 °C at 6 °C/min
Carrier GasHe, constant flow
Flow Rate:1.5 mL/min
DetectorMicro-ECD @ 300 °C
Make-up Gas Flow Rate:60 mL/min
Make-up Gas Type:N2
Data Rate:20 Hz
InstrumentAgilent 7890A GC
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