GC Analysis of Parabens on SLB®-5ms after SPME using 50/30 μm DVB/Carboxen/PDMS Fiber
材料
SPME 光纤
产品编号
说明
价格
SPME 纤维组件二乙烯基苯/羧基/聚二甲基硅氧烷 (DVB/CAR/PDMS)
for use with autosampler, needle size 23 ga, metal alloy fiber, fiber L 1 cmCONDITIONS
sample/matrix
parabens, each at 200 ppb in 3 mL water + 25% sodium chloride in a 4 mL vial
SPME fiber
metal fiber assembly coated with 50/30 μm DVB/Carboxen/PDMS (57912-U)
extraction
immersion with stirring, 25 °C (15 min)
desorption process
260 °C, 2 min
column
SLB-5ms, 20 m × 0.18 mm I.D., 0.36 μm (28576-U)
oven
60 °C (2 min), 15 °C/min to 300 °C (5 min)
MSD interface
275 °C
scan range
m/z 40-450
carrier gas
helium, 0.7 mL/min constant
liner
0.75 mm I.D. SPME
说明
法律信息
SLB is a registered trademark of Merck KGaA, Darmstadt, Germany