Nitrogen-containing herbicides extracted from water
Materiales
Fibra para SPME
Referencia del producto
Descripción
Precios
SPME fiber assembly polyacrylate (PA)
df 85 μm(PA, for use with manual holder, needle size 24 gaCONDITIONS
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