haohan工业乙醛中微量水分测定填充柱GDX-104

乙醛（acetaldehyde）是一种有机化合物，分子式为C2H4O，无色液体，又名醋醛，无色易流动液体，有刺激性气味，可与水和乙醇等一些有机物质互溶。易燃易挥发，蒸气与空气能形成爆炸性混合物，爆炸极限4.0%～57.0%（体积）。

通常,要想准确测定化工产品中水分含量是比较困难的,因无论是取样、做样都要受空气温度、湿度等因素的影响,尤其是对于低沸点的乙醛(沸点20.8℃)来说,更比较困难。一般来说,测定化合物中水分含量的方法有以下几种:①卡尔·费休法;②色谱法;③重量法。因乙醛沸点太低,不能应用重量法。

为此浩瀚色谱（山东）应用技术开发有限公司进行了卡尔·费休法和色谱法的试验,以确定乙醛中水分的测定方法，柱效高，分离好，外标法定量，结果满意。

名称：填充柱
规格：2m*3mm
型号：GDX-104
粒度：60-80目
应用：安捷伦8860

Acetaldehyde is an organic compound with a molecular formula of C2H4O. It is a colorless liquid, also known as acetaldehyde, a colorless and easy-flowing liquid with a pungent odor, and is miscible with some organic substances such as water and ethanol. It is flammable and volatile. Steam and air can form an explosive mixture with an explosion limit of 4.0% to 57.0% (volume).

Generally, it is difficult to accurately determine the moisture content of chemical products, because both sampling and sample preparation are affected by factors such as air temperature and humidity, especially for the low boiling point acetaldehyde (boiling point 20.8°C) , More difficult. Generally speaking, there are several methods for determining the moisture content in compounds: ① Karl Fischer method; ② Chromatography method; ③ Gravimetric method. Because the boiling point of acetaldehyde is too low, the gravimetric method cannot be applied.

For this reason, Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. conducted Karl Fischer and chromatographic experiments to determine the method for determining moisture in acetaldehyde. The column efficiency is high, the separation is good, and the external standard method is quantified with satisfactory results.

Name: Packed column
Specification: 2m*3mm
Model: GDX-104
Granularity: 60-80 mesh
Application: Agilent 8860