HAOHANHH-WAX工业用甲醇中痕量三甲胺含量的测定毛细管柱

本文件规定了采用气相色谱质谱联用法测定工业用甲醇中痕量三甲胺含量的方法。
本文件适用于工业用甲醇中三甲胺的测定，测定下限为14Ug/L。

利用煤气化法合成甲醇的工艺会有一定三甲胺(tma)生成，tma含量过高时会造成甲醇制丙烯(mtp)、甲醇制烯烃(mto)反应器中催化剂中毒。可见，对于工业甲醇中三甲胺的含量测定是非常重要的。然而，目前对于工业甲醇中三甲胺的测定方法未见报道，国家标准中也未制定工业甲醇中三甲胺的测定方法与技术要求。

浩瀚色谱（山东）应用技术开发有限公司通过盐酸-甲醇吸收液吸收固定样品中的三甲胺、加碱液加热释放三甲胺、顶空进样、气质联用法检测的方法,研究建立了工业甲醇中痕量三甲胺的方法.方法的测定下限达到35μg·L~(-1),相对标准偏差小于15%、加标回收率为107%—114%.

名称：毛细管柱
固定液：碱性去活的聚乙二醇
规格：30m*0.25mm*0.25um
型号：HH-WAX
应用：工业用甲醇中痕量三甲胺含量的测定 气相色谱质谱联用法

This document specifies a method for the determination of trace amounts of trimethylamine in industrial methanol by gas chromatography-mass spectrometry.
This document is applicable to the determination of trimethylamine in industrial methanol, and the lower limit of determination is 14Ug/L.

The process of synthesizing methanol by coal gasification will generate a certain amount of trimethylamine (tma). If the content of tma is too high, it will cause catalyst poisoning in the methanol-to-propylene (mtp) and methanol-to-olefin (mto) reactors. It can be seen that it is very important for the determination of the content of trimethylamine in industrial methanol. However, there is no report on the determination method of trimethylamine in industrial methanol at present, and the determination method and technical requirements for trimethylamine in industrial methanol have not been formulated in the national standard.

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has studied and established the method of absorbing trimethylamine in the fixed sample with hydrochloric acid-methanol absorption solution, adding lye and heating to release trimethylamine, headspace sampling, and GC-MS detection. The method for trace trimethylamine. The lower limit of determination of the method is 35 μg·L~(-1), the relative standard deviation is less than 15%, and the recovery of standard addition is 107%-114%.

Name: capillary column
​​​​​​​Fixing Solution: Alkaline-deactivated polyethylene glycol
Specifications: 30m*0.25mm*0.25um
Model: HH-WAX
Application: Determination of trace trimethylamine content in industrial methanol by gas chromatography-mass spectrometry