GC Analysis of Agriculture Pesticides in Orange (Spiked) on SLB^®-5ms after QuEChERS Cleanup using Primary-Secondary Amine (PSA)

技术

gas chromatography (GC): suitable
solid phase extraction (SPE): suitable

试验参数

sample preparation: SPE (Solid Phase Extraction)
sample/matrix: 15 g of ground-up orange, 75 μL of the internal standard stock solution (ethoprophos at 20 ppm in methanol), 75 μL of the pesticide stock solution (29 pesticides, each at 20 ppm in methanol)
column: SLB-5ms, 30 m x 0.25 mm I.D, 0.25 μm (28471-U)
oven: 100 °C (1 min), 10 °C/min to 300 °C (5 min)
inj. temp.: 250 °C
MSD interface: 300 °C
scan range: selected ion monitoring (SIM), 7 monitoring groups used
carrier gas: helium, 1 mL/min constant
injection: 1.0 μL pulsed (20 psi until 0.20 min), splitless (1.0 min)
liner: 4 mm I.D., single taper
sample: extract of an orange spiked with a 29-component pesticide mix plus 1 internal standard, each at 100 ppb

适用性

application for SPE

应用

agriculture
food and beverages