各位版友,这个峰是空气峰吗。这个方法是我们做定性用的,最近几天经常出现这种峰形,但用邻苯的方法就没有这个峰,怎么回事?
测试条件:[GC-2010]
Column Oven Temp. :50.0 °C
Injection Temp. :300.00 °C
Injection Mode :Split
Flow Control Mode :Linear Velocity
Pressure :53.6 kPa
Total Flow :54.0 mL/min
Column Flow :1.00 mL/min
Linear Velocity :36.3 cm/sec
Purge Flow :3.0 mL/min
Split Ratio :50.0
High Pressure Injection :OFF
Carrier Gas Saver :OFF
Splitter Hold :OFF
Oven Temp. Program
Rate Temperature(°C) Hold Time(min)
- 50.0 3.00
15.00 220.0 0.00
20.00 300.0 2.00
[GCMS-QP2010 Plus]
IonSourceTemp :250.00 °C
Interface Temp. :280.00 °C
Solvent Cut Time :0.00 min
Detector Gain Mode :Absolute
Detector Gain :0.85 kV
Threshold :50
[MS Table]
--Group 1 - Event 1--
Start Time :0.00min
End Time :20.00min
ACQ Mode :Scan
Event Time :0.50sec
Scan Speed :1666
Start m/z :20.00
End m/z :800.00