Rtx015-16-628

406

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SAMPLE 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

Mode:

Transfer Line

Temp.:

300 °C

Analyzer Type:

TOF

Ionization Mode:

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