5Å分子筛 食品添加剂氮气中氧O2测定填充柱

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食品添加剂氮气中氧O2测定填充柱
食品添加剂氮气中氧O2测定填充柱 详细信息：

名称：填充柱
固定相：分子筛
规格：1.2m*3mm
型号：5Å
应用：GB 29202-2012 食品安全国家标准 食品添加剂 氮气

氮气还是一种比较理想的制冷剂。氮气在常压下的沸点是-195.8℃（此时氮气为没有颜色的液体），当它与被冻食品相接触时，能吸收的蒸发潜热为198.9kJ/kg；再让氮蒸气升温-20℃，平均比热以1.047kJ/（kg·K）计，则能吸收184.1kJ/kg。

氮气的化学性质并不活泼，常温下很难跟其他物质发生反应，这是作为食品添加剂的一种非常关键而理想的性质。

浩瀚色谱（山东）应用技术开发有限公司，采用5A分子筛填充柱，氧化锆检测器气相色谱仪测定了食品添加剂N2中氧，外标法定量，结果满意。

食品添加剂氮气中氧O2测定填充柱 测试谱图：




Packed column for determination of oxygen O2 in food additive nitrogen
Packed column for determination of oxygen O2 in food additive nitrogen Details:

Name: Packed Column
Stationary Phase: Molecular Sieve
Specifications: 1.2m*3mm
Model: 5A
Application: GB 29202-2012 National Food Safety Standard, Food Additives, Nitrogen

Nitrogen is also an ideal refrigerant. The boiling point of nitrogen under normal pressure is -195.8°C (at this time, nitrogen is a colorless liquid). When it comes into contact with the frozen food, the latent heat of evaporation that can be absorbed is 198.9kJ/kg; let the nitrogen vapor heat up to - At 20℃, the average specific heat is calculated as 1.047kJ/(kg·K), and it can absorb 184.1kJ/kg.

The chemical properties of nitrogen are not active, and it is difficult to react with other substances at room temperature. This is a very critical and ideal property as a food additive.


Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. used 5A molecular sieve packed column, zirconia detector gas chromatograph to determine the oxygen in food additive N2, quantitative external standard method, the results were satisfactory.

Packed column for determination of oxygen O2 in food additive nitrogen gas Test spectrum: