以酸碱中和反应为基础,用过量硫酸溶液吸收含氨气体,以甲基橙为指示剂,用氢氧化钠滴定中和试样中的游离酸;利用氨基与甲醛的特性反应,加入甲醛后,再用氢氧化钠滴定反应生成的H+,含有酸性气体的氨的定量测定方法。

煤气中氨采用以上理化滴定法，操作复杂，费时费力，不环保，无法满足工业生产检测的需要，使用受限。

浩瀚色谱（山东）应用技术开发有限公司，采用新技术，研制氨专用填充柱气相色谱法，测定焦炉煤气中微量氨的含量，柱效高，分离好，峰型对称，焦炉煤气中甲烷，乙烯，乙烷，丙烷，氢，二氧化碳等成分均不干扰氨的测定，定量准确。


名称：高纯氨专用柱
型号：HH-NH3-VI
规格：6m*1/8
*高使用温度：200°C
编号：20240303003
应用：焦炉煤气中氨的测定  气相色谱法
 
Based on the acid-base neutralization reaction, excess sulfuric acid solution is used to absorb ammonia-containing gas. Using methyl orange as an indicator, sodium hydroxide is used to titrate the free acid in the sample. Using the characteristic reaction between amino groups and formaldehyde, after adding formaldehyde, the H+ generated by the reaction is titrated with sodium hydroxide. This is a quantitative determination method for ammonia containing acidic gases.
The above physical and chemical titration method is used for ammonia in gas, which is complex to operate, time-consuming, laborious, not environmentally friendly, and cannot meet the needs of industrial production testing, thus limiting its use.
HaoHan Chromatography (Shandong) Application Technology Development Co., Ltd. has developed a new technology for the determination of trace ammonia in coke oven gas using a gas chromatography method with a special packed column for ammonia. The column has high efficiency and good separation, with symmetrical peak shape. The components of coke oven gas such as methane, ethylene, ethane, propane, hydrogen, carbon dioxide, etc. do not interfere with the determination of ammonia, resulting in accurate quantification.
Name: High purity ammonia dedicated column
Model: HH-NH3-VI
Specification: 6m*1/8
Maximum operating temperature: 200°C
No.: 20240303003
Application: Determination of ammonia in coke oven gas by gas chromatography