Pesticides on Sweet Potato With and Without QuEChERS dSPE Cleanup on Rxi-5Sil MS

	Peaks
1.	Hexadecanoic acid

Injection
Column	Rxi-5Sil MS, 20 m, 0.18 mm ID, 0.18 µm (cat.# 43602)
Standard/Sample	Sweet potato spiked with pesticide mix and extracted with acetonitrile and Q-sep QuEChERS EN Method 15662 extraction salts
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
Sample Preparation	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.
Notes	m/z 60, 73, 87, 129, 256 plotted

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