挥发性物质-使用GCMS 分析EPA 挥发性化合物（分流进样器）

Carrier: Helium at 30 cm/sec, measured at 45ºC Oven: 45ºC for 10 min 45-190ºC at 12º/min 190ºC for 2 min 190-225ºC at 6º/min 225ºC for 1 min Sampler: Purge and Trap (O.I.A. 4560) Purge: Helium for 11 min at 40 mL/min Trap: Tenax/Silica Gel/Carbosieve Preheat: 175ºC Desorb: 220ºC for 0.6 min Injection: Split, 110ºC Split flow 30 mL/min Detector: MSD, 235ºC transfer line Full scan 35-260 amu (m/z 44 subtracted)http://www.spzchina.com