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+,建立了含有酸性气体的氨的定量测定方法。
以上方法，费时费力，操作复杂，无法满足工业生产快速检查的需要。
氨吸附性强，想要准确的测定，并非易事，传统的色谱填料拖尾严重，定量误差大。浩瀚色谱（山东）应用技术开发有限公司，研制的HH-NH3.H2O氨专用色谱固定相，装柱测试高纯氨，柱效高，峰型对称，适用于合成氨，高纯氨，氢燃料电池中微量氨，焦炉煤气中氨，燃气中氨等的分析测定，实验结果满意。
气相色谱固定相 NH3.H2O
粒度：80-100目 25g
温度：200°C
编号：20240202002
配套于安捷伦，岛津，赛默飞，瓦里安，布鲁克，pE等。
Based on acid-base neutralization reaction, absorb ammonia containing gas with excess sulfuric acid solution, use methyl orange as indicator, and titrate the free acid in the sample with sodium hydroxide; A quantitative determination method for ammonia containing acidic gas was established by reacting amino groups with formaldehyde, adding formaldehyde, and then titrating the H+generated by the reaction with sodium hydroxide.
The above methods are time-consuming and laborious, with complex operations, and cannot meet the needs of rapid inspection in industrial production.
Ammonia has strong adsorption capacity, and accurate determination is not an easy task. Traditional chromatographic fillers have serious tailing and large quantitative errors. The HH-NH3.H2O ammonia specific chromatographic stationary phase developed by Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has been tested for high-purity ammonia with high column efficiency and symmetrical peak shape. It is suitable for the analysis and determination of trace ammonia in synthetic ammonia, high-purity ammonia, hydrogen fuel cells, ammonia in coke oven gas, and ammonia in gas. The experimental results are satisfactory.
Gas chromatography stationary phase NH3. H2O
Particle size: 80-100 mesh 25g
Temperature: 200 ° C
Number: 20240202002
Supported by Agilent, Shimadzu, Thermo Fisher, Varian, Brooke, pE, etc.
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