，采集空氣中的三甲胺;將采樣后的采樣管中的吸附劑顆粒轉(zhuǎn)移頂空瓶中,加入飽和堿液,立即密封頂空瓶,一定條件下水浴恒溫30～40min,待頂空瓶中達(dá)到氣液相平衡狀態(tài);以三甲胺標(biāo)準(zhǔn)溶液為參照,采用頂空進(jìn)樣,氣相色譜氮磷檢測(cè)器(GCNPD)分析.按照標(biāo)準(zhǔn)品濃度與峰面積的標(biāo)準(zhǔn)曲線,計(jì)算出樣品中三甲胺的含量.


頂空-氣相色譜法測(cè)定空氣中三甲胺含量  測(cè)試譜圖：



Determination of Trimethylamine in Air by Headspace Gas Chromatography

Determination of trimethylamine in air by headspace gas chromatography Details:



Name: HH-Tamine60 methylamine special capillary column

Specification: 60m * 0.32mm

*High service temperature: 280 ° C

No.: 20220109001



Haohan Chromatographic (Shandong) Application Technology Development Co., Ltd. collects trimethylamine in the air; Transfer the adsorbent particles in the sampling tube after sampling to the headspace bottle, add saturated alkali solution, seal the headspace bottle immediately, and keep the water bath temperature constant for 30-40 min under certain conditions until the headspace bottle reaches the gas-liquid phase equilibrium state; With the standard solution of trimethylamine as reference, adopt headspace sampling and gas chromatography nitrogen phosphorus detector (GCNPD) for analysis. Calculate the content of trimethylamine in the sample according to the standard curve of standard concentration and peak area




Test spectrogram for determination of trimethylamine content in air by headspace gas chromatography: