Department of Chemistry, National Taiwan Normal University, 88 Sec. 4, Tingchow Road, Taipei, Taiwan.
J Chromatogr A. 2013 Aug 30;1305:230-3. doi: 10.1016/j.chroma.2013.06.021. Epub 2013 Jul 1.
The use of an accelerometer for detecting inorganic gases in gas chromatography (GC) is described. A milli-whistle was connected to the outlet of the GC capillary and was used instead of a classical GC detector. When the GC carrier gases and the sample gases pass through the milli-whistle, a sound is produced, leading to vibrational changes, which can be recorded using an accelerometer. Inorganic gases, including SO2, N2 and CO2, which are released from traditional Chinese firework-rockets at relatively high levels as the result of burning the propellant and explosive material inside could be rapidly determined using the GC/whistle-accelerometer system. The method described herein is safe, the instrumentation is compact and has potential to be modified so as to be portable for use in the field. It also can be used in conjunction with FID (flame ionization detector) or TCD (thermal conductivity detector), in which either no response for FID (CO2, N2, NO2, SO2, etc.) or helium gas is needed for TCD, respectively.
本文描述了一种在气相色谱（GC）中使用加速度计来检测无机气体的方法。将微型口哨连接到 GC 毛细管的出口处，并取代了经典的 GC 检测器。当 GC 载气和样品气通过微型口哨时，会产生声音，导致振动变化，这些变化可以使用加速度计记录下来。使用 GC/口哨-加速度计系统，可以快速测定从传统的中国烟花火箭中释放出的无机气体，如 SO2、N2 和 CO2，这些气体是由于燃烧推进剂和内部爆炸材料而在较高水平下释放出来的。本文描述的方法安全可靠，仪器紧凑，具有潜在的可修改性，以便在现场使用，也可以与 FID（火焰离子化检测器）或 TCD（热导检测器）结合使用，对于 FID（CO2、N2、NO2、SO2 等）不需要响应，而对于 TCD 则分别需要氦气。
