技術
gas chromatography (GC): suitable
solid phase microextraction (SPME): suitable
測試參數
SPME fiber: 2 cm Metal coated with 50/30 μm DVB/Carboxen/PDMS (57914-U)
extraction: headspace, 65 °C (30 min)
desorption process: 260 °C for 3 min.
column: SLB-5ms, 30 m x 0.25 mm I.D., 0.25 μm (28471-U)
oven: 60 °C (2 min), 8 °C/min to 200 °C
MSD interface: 300 °C
scan range: SIM, m/z = 137, 124, 95, 112
carrier gas: helium, 1 mL/min constant
liner: 0.75 mm I.D., SPME
sample: 20/10 ppt odor compounds in 25 mL water + 25% NaCl
適合性
application for SPME
應用
environmental
food and beverages
法律資訊
SLB is a registered trademark of Merck KGaA, Darmstadt, Germany
分析物
描述
2-Isopropyl-3-methoxypyrazine 20 ppt
2-Isobutyl-3-methoxypyrazine
2-Methylisoborneol
(±)-Geosmin 10 ppt
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