气相色谱法测定环境空气中三甲胺

To Detect Trimethylamine in Ambient Air with Gas Chromatography

采用4%聚乙二醇(PEG)-20M+1%KOHGXD-401为固定相,2m×3mm玻璃填充柱分离三甲胺,FID检测。该方法有较高灵敏度和良好的线性关系。结果表明:在柱温140℃,进样口温度180℃,检测器温度180℃,氮流量30mL/min时,平均回收率为100 3%,相对标准差为3%。

To take 4% PEG -20 M+1% KOH GXD-401 as fixed phase and to use 2 m×3 mm glass packed column to separate trimethylamine, to detect with FID detector. This method had high sensitivity and good linear correlation. Under the condition that the temperature of column was 140℃, in sample inlet was 180℃, detector was 180℃, and the nitrogen flow was 30 mL/min, the average recovery rate was 100.3%, relative standard deviation was 3%.