The ammonia content in cyclohexanone ammoximation tail gas was determined by gas chromatography. The chroma-tographic operation conditions were discussed and compared with Aus-gas chemical absorption method. The results showed that the ammonia content of cyclohexanone ammoximation tail gas can be well determined by external standard method while using the column combination of Porapark Q and Porapark N and thermal conductivity detector and controlling column temperature 80℃ , vaporization temperature 120℃, testing temperature 150 ℃, bridge current 100 mA and flow rate of carrier gas H2 25 mL/min. This method had the recovery of 97.6% -100.5% and relative standard deviation 0.46% -0.92% , with less error and higher accuracy as compared with Aus-gas chemical absorption method.%采用气相色谱法测定了环己酮氨肟化反应尾气中氨气含量,探讨了气相色谱操作条件,并与奥氏气体化学吸收法进行了比较.结果表明:采用Porapark Q,Porapark N混合色谱柱,柱温80℃,汽化温度120℃,检测温度150℃,检测器为热导检测器,桥流100 mA,载气为H2,流量为25 mL/min,以外标法定量,能够准确测定环己酮氨肟化反应尾气中的氨气；该方法的回收率为97.6％～100.5％,相对标准偏差为0.46％～0.92％；该方法较奥氏气体化学吸收法误差小、准确度高.
展开▼
