以酸堿中和反應(yīng)為基礎(chǔ),用過(guò)量硫酸溶液吸收含氨氣體,以甲基橙為指示劑,用氫氧化鈉滴定中和試樣中的游離酸;利用氨基與甲醛的特性反應(yīng),加入甲醛后,再用氫氧化鈉滴定反應(yīng)生成的H+,建立了含有酸性氣體的氨的定量測(cè)定方法。
以上方法，費(fèi)時(shí)費(fèi)力，操作復(fù)雜，無(wú)法滿足工業(yè)生產(chǎn)快速檢查的需要。
氨吸附性強(qiáng)，想要準(zhǔn)確的測(cè)定，并非易事，傳統(tǒng)的色譜填料拖尾嚴(yán)重，定量誤差大。浩瀚色譜（山東）應(yīng)用技術(shù)開(kāi)發(fā)有限公司，研制的HH-NH3.H2O氨專用色譜固定相，裝柱測(cè)試高純氨，柱效高，峰型對(duì)稱，適用于合成氨，高純氨，氫燃料電池中微量氨，焦?fàn)t煤氣中氨，燃?xì)庵邪钡鹊姆治鰷y(cè)定，實(shí)驗(yàn)結(jié)果滿意。
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氣相色譜固定相 ?NH3.H2O
粒度：80-100目 ?25g
溫度：200°C
編號(hào)：20240202002
配套于安捷倫，島津，賽默飛，瓦里安，布魯克，pE等。
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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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