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空气中痕量三甲胺的顶空气相色谱毛细管柱
空气中痕量三甲胺的顶空气相色谱毛细管柱 详细信息：

名称：HH-Tamine60甲胺专用毛细管柱
规格：60m*0.32mm
*高使用温度：280°C
编号：20220109001

浩瀚色谱（山东）应用技术开发有限公司建立了顶空气相色谱-质谱法测定空气中三甲胺(TMA)含量的方法.以0.02mol/L盐酸为吸收液采集空气中的三甲胺,吸收液用氢氧化钠游离出三甲胺,在80℃下平衡40min后用气相色谱-质谱联用仪进行检测.当采气流量为0.5 L/min时,三甲胺的采集效率〉99%;方法在0.05～2μg范围内线性良好,相关系数〉0.999;做了3个水平的加标回收率和精密度实验,相对标准偏差在2.4%～5.6%,加标回收率在94%～102%;当采样体积为30L时,方法的检出限为0.3μg/m.所建方法灵敏度高于目前的主要分析方法,适用于环境空气中低浓度三甲胺的监测.



空气中痕量三甲胺的顶空气相色谱毛细管柱  测试谱图：



Headspace Gas Chromatographic Capillary Column for Trace Trimethylamine in Air

Headspace gas chromatographic capillary column details of trace trimethylamine in air:



Name: HH-Tamine60 methylamine special capillary column

Specification: 60m * 0.32mm

*High service temperature: 280 ° C

No.: 20220109001



Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has established a headspace gas chromatography-mass spectrometry method to determine the content of trimethylamine (TMA) in the air. Use 0.02mol/L hydrochloric acid as the absorption liquid to collect trimethylamine in the air. The absorption liquid is free of trimethylamine with sodium hydroxide. After being balanced at 80 ℃ for 40 minutes, use a gas chromatography-mass spectrometer to detect it. When the gas flow is 0.5 L/min, the collection efficiency of trimethylamine is>99%; Method: 0.05~2 μ The linearity is good within the range of g, and the correlation coefficient is ＞ 0.999; Three levels of spiked recoveries and precision experiments were conducted. The relative standard deviation was 2.4% ～ 5.6%, and the spiked recoveries were 94% ～ 102%; When the sampling volume is 30L, the detection limit of the method is 0.3 μ g/m. The sensitivity of the method is higher than that of the current main analytical methods, and it is suitable for monitoring low concentrations of trimethylamine in ambient air



Headspace gas chromatography capillary column test spectrum of trace trimethylamine in air:


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