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406
www.restek.comSAMPLE HANDLING |
SAMPLE PREPARATION
QuEChERS Products
GC_FF01125-27
Column
Rxi®-5Sil MS, 20 m, 0.18 mm ID, 0.18 µm (cat.# 43602)
Sample
Sweet potato spiked with pesticide mix and extracted with acetoni-
trile and Q-sep® QuEChERS EN Method 15662 extraction salts
Injection
Inj. Vol.:
1.0 µL splitless (hold 1 min)
Liner:
Single taper (4 mm) w/deact. wool (cat.# 22405)
Inj. Temp.:
250 °C
Oven
Oven Temp.:
72.5 °C (hold 1 min) to 350 °C at 20 °C/min
Carrier Gas
He, constant flow
Flow Rate:
1.2 mL/min
Detector
MS
Mode:
Transfer Line
Temp.:
300 °C
Analyzer Type:
TOF
Ionization Mode:
EI
Acquisition Range: 45-550 amu
Instrument
Agilent/HP6890 GC
Notes
A. Extract (without cleanup step) acidified with formic acid to pH 5
B. Extract with cleanup using Q-sep® QuEChERS dSPE cleanup tube
(cat.# 26124) acidified with formic acid to pH 5.
Scan range: m/z 60, 73, 87, 129, 256 plotted
Us Q-s p® QuEChERS tub s to asily r mov matrix int rf r nc s.
A. No extract cleanup
B. Q-sep® QuEChERS cleanup