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Pesticides in QuEChERS Extract of Sweet Potato on Rxi-5Sil MS
Peaks | |
---|---|
1. | Endosulfan I![]() |

GC_FF01133
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 acetonitrile and Q-sep™ QuEChERS extraction salts |
Injection | |
Inj. Vol.: | 1 µL splitless (hold 1 min) |
Liner: | Gooseneck splitless (4 mm) w/deact. wool (cat.# 22405) |
Inj. Temp.: | 250 °C |
Purge Flow: | 40 mL/min |
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 | TOFMS |
Transfer Line Temp.: | 300 °C |
Analyzer Type: | TOF |
Source Temp.: | 225 °C |
Electron Energy: | 70 eV |
Mass Defect: | -20 mu/100 u |
Solvent Delay Time: | 3 min |
Tune Type: | PFTBA |
Ionization Mode: | EI |
Scan Range: | 45 to 550 amu |
Scan Rate: | 10 scans/sec |
Instrument | LECO Pegasus III GC-TOFMS |
Notes | Sample: 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 |
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