浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司采用弱酸性吸收液采集無組織廢氣中的三甲胺,加入堿液后,在一定的溫度下經(jīng)一定時間的平衡,吸收液中的三甲胺逸至上部空間,并在氣液兩相中達(dá)到動態(tài)的平衡。此時,三甲胺在氣相中的濃度與它在液相中的濃度成正比。用氫火焰離子化檢測器對氣相中的三甲胺進(jìn)行測定。實驗結(jié)果表明,在無組織廢氣吸收液體積為10.0 mL,采樣體積為20 L時,三甲胺的檢出限是0.003 mg/m~3,線性良好,相關(guān)系數(shù)為0.9997,加標(biāo)回收率為85.0%-100%。初步建立了頂空氣相色譜法測定無組織廢氣中三甲胺的方法。
名稱：HH-Tamine60甲胺專用毛細(xì)管柱
規(guī)格：60m*0.32mm*5.0um
最高使用溫度：280°C
編號：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
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