GC Analysis of Nitrogen-Containing Herbicides in Water on a 5% Phenyl Column after SPME using 85 μm Polyacrylate Fiber

技术

gas chromatography (GC): suitable
solid phase microextraction (SPME): suitable

试验参数

sample/matrix: 4 mL (water + 100ng/mL each analyte 1g/mL NaCl), pH 2, in 4.6 mL vial
SPME fiber: polyacrylate, 85 μm (57304)
extraction: immersion, ambient temp., 50 min (constant stirring)
desorption process: 5 min, 230 °C
column: 5% phenyl polysiloxane, 30 m × 0.25 mm I.D., 0.25 μm (Supelco equivalent, SLB-5ms, 28471-U)
oven: 40 °C (5 min) to 100 °C at 30 °C/min, to 275 °C at 5 °C/min
inj. temp.: splitless, 230 °C
detector: MS (Ion Trap Manifold: 250°C; scan range m/z=45-400 at 0.6 sec/scan)
carrier gas: helium, 40 cm/sec, set at 40 °C

适用性

application for SPME

应用

environmental
food and beverages