浩瀚色谱（山东）应用技术开发有限公司采用弱酸性吸收液采集无组织废气中的三甲胺,加入碱液后,在一定的温度下经一定时间的平衡,吸收液中的三甲胺逸至上部空间,并在气液两相中达到动态的平衡。此时,三甲胺在气相中的浓度与它在液相中的浓度成正比。用氢火焰离子化检测器对气相中的三甲胺进行测定。实验结果表明,在无组织废气吸收液体积为10.0 mL,采样体积为20 L时,三甲胺的检出限是0.003 mg/m~3,线性良好,相关系数为0.9997,加标回收率为85.0%-100%。初步建立了顶空气相色谱法测定无组织废气中三甲胺的方法。
名称:HH-Tamine60甲胺专用毛细管柱
规格:60m*0.32mm*5.0um
最高使用温度:280°C
编号:20230219007
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. collects trimethylamine in the unorganized waste gas with weak acid absorption liquid, and after adding alkali solution, trimethylamine in the absorption liquid escapes to the upper space at a certain temperature and reaches a dynamic balance in the gas-liquid phase. At this time, the concentration of trimethylamine in the gas phase is proportional to its concentration in the liquid phase. The trimethylamine in the gas phase was determined by hydrogen flame ionization detector. The experimental results show that the detection limit of trimethylamine is 0.003 mg/m3 when the volume of unorganized waste gas absorption solution is 10.0 mL and the sampling volume is 20 L. The linearity is good, the correlation coefficient is 0.9997, and the recovery rate is 85.0% - 100%. A method for the determination of trimethylamine in unorganized waste gas by headspace gas chromatography was established.
Name: HH-Tamine60 methylamine special capillary column
Specification: 60m * 0.32mm * 5.0um
Maximum service temperature: 280 ° C
No.: 20230219007