GC Analysis of Nitrogen-Containing Herbicides in Water on a 5% Phenyl Column after SPME using 85 μm Polyacrylate Fiber
材料
used together
产品编号
说明
价格
聚丙烯酸酯 (PA) 固相微萃取萃取头
85 μm Polyacrylate, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, white hubCONDITIONS
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